Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
919
FNUS56 KPDT 312131
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT THURSDAY FOR
ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE WA695...
...RED FLAG WARNING IN EFFECT UNTIL 11 PM PDT THURSDAY FOR ABUNDANT
LIGHTNING FOR FIRE WEATHER ZONES OR697, OR698, OR699, OR700, OR704
AND OR705...
.DISCUSSION...Showers and thunderstorms with abundant lightning
expected across much of the region today with areas of isolated dry
thunderstorms. Some storms will be capable of producing excessive
rainfall over numerous burn scars. Thunderstorms are expected
every afternoon through the weekend. Gusty and erratic winds
around thunderstorms with gusts of 50-60 mph possible. Daytime RHs
will begin to climb into the 20-30% range with a few isolated
pockets in the Basin below 20%. Diurnally driven winds will
persist with the typical locally isolated breezy winds in the
Cascade gaps.
***Thunderstorms imply strong gusty winds***
***Winds are 20 foot 10 minute averages***
***CWR-chance of wetting rain 0.10 or greater***
***Ventilation Index is derived from the
transport wind multiplied by the mixing
height in 100`s of feet. Index categories
are a generalized indicator and users are
encourage to develop criteria that are
suitable and representative of dispersion
conditions in their local area of interest.***
Note: Max transport winds may not occur
at the same time as max mixing height.
WAZ695-011130-
East Washington South Central Cascade Mountains-
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 8 PM
PDT THIS EVENING...
.TONIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of showers and
thunderstorms in the evening, then a chance of showers after
midnight.
* Min temperature.....55-62...except 52-57 ridges.
* Max humidity........63-78 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 5 to 11 mph.
* Ridges/upr slopes....Northwest winds 5 to 11 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 15 mph.
* Ventilation Index...Poor to fair (103-313) decreasing to poor
(31-117) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms.
* Max temperature.....75-84...except 66-75 ridges.
* Min humidity........40-55 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......7500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (46-150) increasing to poor to fair
(192-396) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....52-59...except 49-54 ridges.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 15 mph.
* Ventilation Index...Poor to fair (124-322) decreasing to poor
(29-113) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-84...except 66-75 ridges.
* Min humidity........30-45 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (34-132) increasing to fair to good
(311-545) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy. Lows 48 to 55. Highs 66 to 81. Northwest
winds 3 to 8 mph.
.MONDAY...A slight chance of showers. Mostly cloudy. Lows 46 to
54. Highs 60 to 75. Northwest winds 4 to 9 mph.
.TUESDAY...Partly cloudy. Lows 45 to 52. Highs 61 to 75. West
winds 4 to 9 mph.
.WEDNESDAY...Partly cloudy. Lows 47 to 54. Highs 63 to 77. West
winds 2 to 7 mph.
.THURSDAY...A slight chance of showers. Mostly cloudy. Lows 50 to
55. Highs 61 to 75. West winds 2 to 7 mph.
$$
WAZ690-011130-
Kittitas Valley-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A chance of showers.
* Min temperature.....63-69.
* Max humidity........51-66 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 8 to 14 mph.
* Ridges/upr slopes....Northwest winds 8 to 14 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 15 mph.
* Ventilation Index...Fair (302-480) decreasing to poor (47-137)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms.
* Max temperature.....85-92...except 74-86 ridges.
* Min humidity........30-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 10 mph.
* Ridges/upr slopes....Northwest winds 4 to 9 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......9500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (101-195) increasing to fair to good
(421-565) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....59-65.
* Max humidity........52-67 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 6 to 12 mph.
* Ridges/upr slopes....Northwest winds 6 to 12 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 15 to 20 mph.
* Ventilation Index...Fair (302-480) decreasing to poor (46-138)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....85-93...except 76-88 ridges.
* Min humidity........19-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 4 to 9 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....Northwest 10 to 15 mph.
* Ventilation Index...Poor (59-167) increasing to fair to excellent
(494-722) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 57 to 62. Highs 82 to 90. Northwest
winds 5 to 11 mph.
.MONDAY...Mostly cloudy with a slight chance of showers. Lows
57 to 62. Highs 76 to 84. Northwest winds 6 to 12 mph.
.TUESDAY...Partly cloudy. Lows 53 to 58. Highs 77 to 85. West
winds 5 to 11 mph.
.WEDNESDAY...Partly cloudy. Lows 55 to 60. Highs 79 to 87. West
winds 3 to 8 mph.
.THURSDAY...Partly cloudy. Lows 57 to 62. Highs 78 to 86. West
winds 3 to 8 mph.
$$
WAZ694-011130-
Yakama Alpine District-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening, then a slight
chance of showers and thunderstorms after midnight.
* Min temperature.....54-61.
* Max humidity........68-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (148-286) decreasing to poor
(25-70) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms.
* Max temperature.....80-88...except 70-82 ridges.
* Min humidity........34-48 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......7500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (28-78) increasing to fair (202-340) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....51-59.
* Max humidity........66-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (142-252) decreasing to poor
(25-66) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-89...except 70-82 ridges.
* Min humidity........22-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-65) increasing to fair to good
(363-501) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy. Lows 48 to 56. Highs 71 to 84. West
winds 2 to 7 mph.
.MONDAY...A slight chance of showers. Mostly cloudy. Lows 46 to
54. Highs 65 to 78. West winds 3 to 8 mph.
.TUESDAY...Partly cloudy. Lows 44 to 52. Highs 67 to 80. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 47 to 55. Highs 69 to 83. West
winds 2 to 7 mph.
.THURSDAY...Partly cloudy with a slight chance of showers. Lows
50 to 57. Highs 67 to 81. West winds 2 to 7 mph.
$$
ORZ691-WAZ691-011130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening, then a slight chance of showers and thunderstorms after
midnight.
* Min temperature.....62-68.
* Max humidity........58-73 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 6 to 12 mph.
* Ridges/upr slopes....West winds 6 to 12 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Fair (264-434) decreasing to poor (33-79)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms.
* Max temperature.....86-92.
* Min humidity........26-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......10000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (69-161) increasing to fair to good
(392-520) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....59-65.
* Max humidity........58-73 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor to fair (179-337) decreasing to poor
(28-70) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....87-95.
* Min humidity........18-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (41-133) increasing to fair to good
(470-640) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear with a slight chance of showers. Lows
58 to 63. Highs 82 to 91. West winds 4 to 10 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 55 to 62.
Highs 75 to 83. West winds 5 to 11 mph.
.TUESDAY...Partly cloudy. Lows 52 to 59. Highs 79 to 86.
Southwest winds 5 to 11 mph.
.WEDNESDAY...Partly cloudy. Lows 56 to 61. Highs 82 to 89.
Southwest winds 4 to 9 mph.
.THURSDAY...Partly cloudy. Lows 58 to 63. Highs 83 to 89.
Southwest winds 4 to 9 mph.
$$
ORZ692-WAZ692-011130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of thunderstorms in
the evening. A chance of showers. A slight chance of
thunderstorms after midnight.
* Min temperature.....56-65...except 55-60 ridges.
* Max humidity........68-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 6 mph.
* Ridges/upr slopes....Southwest winds 1 to 6 mph.
* CWR.................20 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor to fair (139-247) decreasing to poor
(29-75) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers. A chance
of thunderstorms in the afternoon.
* Max temperature.....77-86...except 70-75 ridges.
* Min humidity........33-48 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......6500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (53-117) increasing to poor to fair
(187-311) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms in the evening.
* Min temperature.....54-62.
* Max humidity........63-78 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (40-104) decreasing to poor (25-45)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers in
the afternoon.
* Max temperature.....80-89...except 72-78 ridges.
* Min humidity........22-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 6
mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming west 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (31-97) increasing to fair to good
(489-663) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear with a slight chance of showers. Lows
53 to 60. Highs 76 to 86. West winds 2 to 7 mph.
.MONDAY...Cooler. Mostly cloudy with a chance of showers. Lows
51 to 59. Highs 64 to 75. West winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 47 to 55. Highs 70 to 81.
Southwest winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 50 to 58. Highs 72 to 83.
Southwest winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 52 to 60. Highs 73 to 85.
Southwest winds 2 to 7 mph.
$$
ORZ693-WAZ693-011130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a chance of
thunderstorms in the evening, then a chance of showers and a
slight chance of thunderstorms after midnight.
* Min temperature.....55-63.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Southwest winds 2 to 6 mph.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (97-183) decreasing to poor (25-72)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the morning, then showers
likely and a chance of thunderstorms in the afternoon.
* Max temperature.....76-85...except 70-78 ridges.
* Min humidity........39-51 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................60 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......7000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (35-79) increasing to poor to fair
(165-259) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening.
* Min temperature.....52-62.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Poor (27-75) decreasing to poor (25-46) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....80-89...except 73-82 ridges.
* Min humidity........22-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......12500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-61) increasing to good (506-670) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear with a slight chance of showers. Lows
51 to 61. Highs 79 to 89. West winds 1 to 5 mph.
.MONDAY...Not as warm. Mostly cloudy with a chance of showers and
a slight chance of thunderstorms. Lows 50 to 60. Highs 69 to 79.
Northwest winds 1 to 5 mph.
.TUESDAY...A slight chance of showers and thunderstorms. Partly
cloudy. Lows 46 to 56. Highs 74 to 84. Terrain driven winds less
than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 49 to 59. Highs 76 to 86. West
winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 50 to 60. Highs 78 to 88. West
winds 1 to 6 mph.
$$
ORZ701-011130-
Eastern Columbia River Gorge of Oregon-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A slight chance of showers. A
slight chance of thunderstorms after midnight.
* Min temperature.....58-63.
* Max humidity........63-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Winds west winds 6 to 12 mph.
* Ridges/upr slopes....West winds 5 to 11 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph.
* Ventilation Index...Poor to fair (198-346) decreasing to poor
(39-125) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers in the morning.
* Max temperature.....86-91...except 81-88 ridges.
* Min humidity........27-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph...except
northwest 4 to 9 mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....Northwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (58-180) increasing to fair (381-495) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....55-61.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 10 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Fair (239-381) decreasing to poor (38-118)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....85-90...except 80-87 ridges.
* Min humidity........24-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph...except west 4 to 10
mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor (43-163) increasing to fair to good
(490-618) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy. Lows 53 to 59. Highs 79 to 84. West
winds 5 to 11 mph.
.MONDAY...A slight chance of showers. Mostly cloudy. Lows 51 to
57. Highs 73 to 78. West winds 5 to 11 mph.
.TUESDAY...Partly cloudy. Lows 49 to 55. Highs 78 to 83. West
winds 5 to 11 mph.
.WEDNESDAY...Partly cloudy. Lows 53 to 58. Highs 81 to 86. West
winds 3 to 8 mph.
.THURSDAY...Partly cloudy. Lows 55 to 60. Highs 80 to 86. West
winds 3 to 8 mph.
$$
ORZ702-011130-
East Slopes of the Mt. Hood National Forest-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A slight chance of showers.
* Min temperature.....52-62.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 15 mph.
* Ventilation Index...Poor to fair (73-221) decreasing to poor
(25-79) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming mostly sunny. A
slight chance of showers in the morning.
* Max temperature.....83-89...except 75-84 ridges.
* Min humidity........27-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (33-103) increasing to fair (212-374) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....50-59.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor to fair (103-263) decreasing to poor
(25-72) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-89...except 74-83 ridges.
* Min humidity........24-38 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (25-82) increasing to fair to good
(320-528) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
48 to 56. Highs 68 to 82. West winds 2 to 7 mph.
.MONDAY...A slight chance of showers. Mostly cloudy. Lows 46 to
54. Highs 62 to 77. West winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 44 to 52. Highs 67 to 81. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 48 to 55. Highs 70 to 84. West
winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 50 to 58. Highs 70 to 84. West
winds 1 to 5 mph.
$$
ORZ695-011130-
Eagle Cap Wilderness-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a chance of
thunderstorms in the evening, then a chance of showers and a
slight chance of thunderstorms after midnight.
* Min temperature.....55-62...except 49-55 ridges.
* Max humidity........70-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 2 to 6 mph.
* CWR.................60 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (99-219) decreasing to poor
(25-64) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the morning, then showers
likely and a chance of thunderstorms in the afternoon.
* Max temperature.....72-83...except 60-72 ridges.
* Min humidity........36-51 percent...except 50-64 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....40 percent (chance).
* Mixing height.......7000 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (25-63) increasing to poor to fair
(122-252) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening.
* Min temperature.....54-60...except 47-54 ridges.
* Max humidity........66-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (30-86) decreasing to poor (25-52) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy. A
slight chance of showers and thunderstorms in the afternoon.
* Max temperature.....75-86...except 64-75 ridges.
* Min humidity........25-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......11000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (27-63) increasing to fair to good
(360-582) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
48 to 58. Highs 68 to 83. Northwest winds 1 to 5 mph.
.MONDAY...Cooler. Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows 45 to 55. Highs 58 to 73.
Northwest winds 2 to 7 mph.
.TUESDAY...A slight chance of showers and thunderstorms. Partly
cloudy. Lows 42 to 52. Highs 63 to 78. West winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 45 to 54. Highs 66 to 81. West
winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 47 to 56. Highs 68 to 83.
Southwest winds 1 to 6 mph.
$$
ORZ694-011130-
Grande Ronde Valley of Oregon-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a chance of
thunderstorms in the evening, then a chance of showers and a
slight chance of thunderstorms after midnight.
* Min temperature.....57-62.
* Max humidity........75-87 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (197-261) decreasing to poor
(36-70) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the morning, then showers
likely and a chance of thunderstorms in the afternoon.
* Max temperature.....82-87.
* Min humidity........34-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......7000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (50-90) increasing to fair (277-327) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening.
* Min temperature.....54-59.
* Max humidity........72-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 3 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (85-121) decreasing to poor (35-53)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....85-90.
* Min humidity........23-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 3
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......11000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (48-74) increasing to good to excellent
(627-709) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 53 to 58. Highs 84 to 89. Northwest
winds 2 to 7 mph.
.MONDAY...Not as warm. Mostly cloudy with a chance of showers and
a slight chance of thunderstorms. Lows 52 to 57. Highs 73 to 78.
Northwest winds 2 to 7 mph.
.TUESDAY...A slight chance of showers and thunderstorms. Partly
cloudy. Lows 48 to 53. Highs 79 to 84. Northwest winds 2 to
7 mph.
.WEDNESDAY...Mostly clear. Lows 50 to 55. Highs 82 to 87.
Northwest winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 53 to 58. Highs 84 to 89. West
winds 2 to 7 mph.
$$
ORZ699-011130-
Western Forested Blue Mountains-
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM
PDT THIS EVENING...
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a slight
chance of thunderstorms in the evening, then scattered showers
and thunderstorms after midnight.
* Min temperature.....52-59.
* Max humidity........72-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (73-159) decreasing to poor (25-61)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the morning. A chance of showers. A chance of
thunderstorms in the afternoon.
* Max temperature.....77-83...except 70-78 ridges.
* Min humidity........27-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................30 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......8500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (34-76) increasing to poor to fair
(183-311) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening.
* Min temperature.....51-57.
* Max humidity........64-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (85-197) decreasing to poor (25-48)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....79-85...except 72-80 ridges.
* Min humidity........23-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......12000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-58) increasing to fair to good
(495-635) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 50 to 56. Highs 74 to 82. Terrain
driven winds less than 5 mph.
.MONDAY...Cooler. Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows 47 to 54. Highs 63 to 72. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 44 to 50. Highs 69 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 46 to 53. Highs 72 to 81. Terrain
driven winds less than 5 mph.
.THURSDAY...Mostly clear. Lows 49 to 55. Highs 74 to 83. Terrain
driven winds less than 5 mph.
$$
ORZ696-011130-
John Day Valley-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and
thunderstorms in the evening, then a slight chance of showers and
thunderstorms after midnight.
* Min temperature.....55-62.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 2 to 5 mph.
* CWR.................40 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (84-206) decreasing to poor
(26-62) after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
morning, then a slight chance of showers and thunderstorms in the
afternoon.
* Max temperature.....80-88...except 75-80 ridges.
* Min humidity........23-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......11000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (32-64) increasing to fair (332-458) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening.
* Min temperature.....54-60.
* Max humidity........60-73 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (167-273) decreasing to poor
(26-50) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....82-90...except 77-82 ridges.
* Min humidity........20-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......12500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (29-57) increasing to fair to good
(426-538) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 53 to 59. Highs 78 to 86. Northwest
winds 1 to 5 mph.
.MONDAY...Showers likely and a slight chance of thunderstorms.
Mostly cloudy. Lows 50 to 57. Highs 70 to 77. Northwest winds
1 to 5 mph.
.TUESDAY...Partly cloudy. Lows 47 to 53. Highs 74 to 83. West
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 50 to 56. Highs 78 to 86. West
winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 53 to 58. Highs 80 to 88.
Southwest winds 1 to 6 mph.
$$
ORZ700-011130-
Central Mountains of Oregon-
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM
PDT THIS EVENING...
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and
thunderstorms in the evening, then a slight chance of showers and
thunderstorms after midnight.
* Min temperature.....50-59.
* Max humidity........68-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................30 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Fair (202-342) decreasing to poor (25-43)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers. A
slight chance of thunderstorms in the afternoon.
* Max temperature.....82-89...except 75-80 ridges.
* Min humidity........22-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......11000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (30-56) increasing to fair (381-461) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms in the evening.
* Min temperature.....50-57.
* Max humidity........62-77 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Fair (247-367) decreasing to poor (25-45)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....82-88...except 75-81 ridges.
* Min humidity........20-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......12000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (26-46) increasing to fair to good
(386-522) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 49 to 56. Highs 78 to 84. Northwest
winds 2 to 7 mph.
.MONDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 45 to 53. Highs 70 to 77.
Northwest winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 41 to 49. Highs 75 to 82. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 45 to 53. Highs 79 to 86. West
winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 48 to 55. Highs 81 to 86.
Southwest winds 2 to 7 mph.
$$
ORZ703-011130-
Warm Springs Reservation-
231 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A slight chance of showers.
* Min temperature.....58-63...except 53-59 ridges.
* Max humidity........61-72 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor to fair (167-305) decreasing to poor
(30-70) after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....84-93...except 72-81 ridges.
* Min humidity........22-29 percent...except 29-43 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (49-109) increasing to fair to good
(378-550) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....57-62...except 52-57 ridges.
* Max humidity........61-72 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Fair (209-387) decreasing to poor (27-67)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....83-92...except 71-81 ridges.
* Min humidity........20-28 percent...except 27-42 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 7 mph in the afternoon.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (33-85) increasing to fair to good
(439-565) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
51 to 58. Highs 74 to 86. West winds 3 to 8 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 48 to 55.
Highs 68 to 81. West winds 4 to 9 mph.
.TUESDAY...Partly cloudy. Lows 47 to 52. Highs 73 to 85. West
winds 4 to 9 mph.
.WEDNESDAY...Partly cloudy. Lows 51 to 56. Highs 76 to 89. West
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 53 to 58. Highs 76 to 89. West
winds 2 to 7 mph.
$$
ORZ704-011130-
Northern Deschutes National Forest-
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM
PDT THIS EVENING...
.TONIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A slight chance of showers.
* Min temperature.....49-55.
* Max humidity........67-82 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor to fair (133-265) decreasing to poor
(25-71) after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the afternoon.
* Max temperature.....83-90...except 69-80 ridges.
* Min humidity........24-31 percent...except 31-46 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 1
to 6 mph in the afternoon.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (39-87) increasing to fair (301-389) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers in the evening.
* Min temperature.....49-54.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (175-303) decreasing to poor
(25-59) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-89...except 68-79 ridges.
* Min humidity........24-30 percent...except 30-45 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 1
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (27-69) increasing to fair to good
(407-503) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 47 to 53. Highs 68 to 81. West
winds 2 to 7 mph.
.MONDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 44 to 51. Highs 63 to 77. West
winds 2 to 7 mph.
.TUESDAY...Partly cloudy. Lows 41 to 47. Highs 68 to 82. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 45 to 51. Highs 71 to 85. West
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 48 to 53. Highs 71 to 85. West
winds 2 to 7 mph.
$$
ORZ705-011130-
Southern Deschutes National Forest-
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM
PDT THIS EVENING...
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening, then a slight
chance of showers after midnight.
* Min temperature.....44-50.
* Max humidity........80-95 percent...except 69-84 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (107-191) decreasing to poor (25-33)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy. A
slight chance of showers and thunderstorms in the afternoon.
* Max temperature.....78-84...except 69-77 ridges.
* Min humidity........26-33 percent...except 30-44 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......10000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (27-45) increasing to fair (268-378) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms in the evening.
* Min temperature.....44-51.
* Max humidity........76-91 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (115-245) decreasing to poor
(25-37) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....78-83...except 68-76 ridges.
* Min humidity........26-33 percent...except 29-44 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......10500 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Poor (25-38) increasing to fair (403-495) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 44 to 50. Highs 69 to 79. Northwest
winds 1 to 5 mph.
.MONDAY...A chance of showers and thunderstorms. Mostly cloudy.
Lows 41 to 46. Highs 64 to 73. Northwest winds 1 to 5 mph.
.TUESDAY...Mostly clear. Lows 37 to 44. Highs 69 to 79. West
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 41 to 47. Highs 73 to 83. West
winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 44 to 50. Highs 73 to 83. West
winds 1 to 5 mph.
$$
ORZ697-011130-
Central Blue Mountains-
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM
PDT THIS EVENING...
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a slight
chance of thunderstorms in the evening, then scattered showers
and thunderstorms after midnight.
* Min temperature.....49-55.
* Max humidity........78-93 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 5 mph.
* CWR.................60 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (87-167) decreasing to poor (25-61)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
* Max temperature.....77-82...except 70-77 ridges.
* Min humidity........26-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......9500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Poor (33-71) increasing to fair (270-444) in
the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening.
* Min temperature.....49-55.
* Max humidity........66-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (107-185) decreasing to poor (25-53)
after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A chance of showers and a
slight chance of thunderstorms in the afternoon.
* Max temperature.....78-83...except 72-79 ridges.
* Min humidity........25-33 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......12000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (26-62) increasing to fair to good
(469-593) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 47 to 53. Highs 73 to 81. Terrain
driven winds less than 5 mph.
.MONDAY...Showers likely and a slight chance of thunderstorms.
Mostly cloudy. Lows 44 to 51. Highs 64 to 71. Northwest winds
1 to 5 mph.
.TUESDAY...Partly cloudy. Lows 41 to 48. Highs 70 to 77.
Northwest winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 44 to 50. Highs 73 to 80. West
winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 47 to 53. Highs 75 to 82.
Southwest winds 1 to 5 mph.
$$
ORZ698-011130-
Southern Blue Mountains-
231 PM PDT Thu Jul 31 2025
...RED FLAG WARNING IN EFFECT FOR ABUNDANT LIGHTNING UNTIL 11 PM
PDT THIS EVENING...
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers and a slight chance of
thunderstorms in the evening, then scattered showers and
thunderstorms after midnight.
* Min temperature.....50-55.
* Max humidity........77-88 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................60 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (177-347) decreasing to poor
(28-78) after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of
thunderstorms in the morning. A slight chance of showers. A
slight chance of thunderstorms in the afternoon.
* Max temperature.....77-82...except 72-78 ridges.
* Min humidity........21-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......10000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (45-77) increasing to fair to good
(418-512) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening.
* Min temperature.....51-56.
* Max humidity........70-85 percent...except 65-74 percent ridges.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Poor to fair (174-274) decreasing to poor
(25-58) after midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....79-85.
* Min humidity........22-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......12500 ft agl.
* Transport winds.....North around 5 mph shifting to the southwest
in the afternoon.
* Ventilation Index...Poor (26-60) increasing to fair to good
(413-549) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 48 to 55. Highs 78 to 84. North
winds 1 to 5 mph.
.MONDAY...Showers likely and a slight chance of thunderstorms.
Mostly cloudy. Lows 46 to 51. Highs 69 to 75. Northwest winds
2 to 7 mph.
.TUESDAY...Mostly clear. Lows 42 to 49. Highs 74 to 81. Northwest
winds 2 to 7 mph.
.WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 78 to 84. West
winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 48 to 53. Highs 80 to 86. West
winds 1 to 6 mph.
$$
.8-14 DAY OUTLOOK for Friday August 8 through Thursday August 14...
A greater chance of above average temperatures and precipitation.
$$