Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
463
FNUS55 KRIW 310901
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
301 AM MDT Thu Jul 31 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Above normal moisture will persist across northern parts of the
dispatch zone today. This should limit fire weather concerns while
southern zones may see near elevated fire weather conditions. Min RH
values over zones 140 and 415 will mainly remain above 25 percent
while zones 414 and 416 see lower values of 20 or less percent.
Isolated showers and thunderstorms will be possible this afternoon
with the best chances across northern zones. Chance for wetting
rains are expected to be low with the best chances being 10 to 20
percent mainly over zones 140 and 415. Winds increase in the
afternoon with speeds of 10 to 15 mph accompanied by periodic gusts
around 20 mph. Stronger gusts may be possible nearby any developing
showers or thunderstorms. Moisture will continue to dwindle through
the weekend with Min RH values returning to near critical by the
weekend.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Above normal moisture persists keeping fire weather concerns to a
minimum. Min RH values will be mainly above 25 percent across the
dispatch area. Showers and thunderstorms will be possible once again
this afternoon and evening. Chances for wetting rains will be the
highest across northern zones ranging from 20 to 50 percent. Winds
are expected to be marginal with the only increase being a result of
convection. Strong gusty outflow winds will be possible as showers
and thunderstorms develop with gusts of 30 to 45 mph. Min RH along
with chances for precipitation are expected to continue to decrease
through the end of the week. This may lead to near elevated fire
weather conditions by the weekend.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Above normal moisture should limit fire weather concerns today for
northern zones as min RH values remain above 30 percent for northern
zones with drier values around 10 to 15 percent across southern
zones. Showers and thunderstorms return today with chances for
wetting rains ranging from 20 to 40 percent over northern zones.
Showers and thunderstorms will be more isolated and drier in nature
for southern zones Across all zones one concern as a result of any
nearby thunderstorms will be frequent cloud to ground lightning
strikes. Winds increase this afternoon over southern zones with
speeds around 15 mph with periodic gusts of 20 to 30 mph. Strong
gusty outflow winds of 30 to 45 mph will be possible nearby any
developing showers or thunderstorms. Min RH values and precipitation
chances will continue to decrease throughout the remainder of the
week. This may lead to more widespread near elevated fire weather
concerns by the weekend.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-011115-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms late in the afternoon. Some
thunderstorms may be severe with gusty winds,
small hail, and heavy rainfall. Chance of
precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....78-83.
24 hr trend......1 degree warmer.
Min humidity........34-40 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the evening. Some
thunderstorms may be severe with heavy
rainfall. Some thunderstorms may be severe with
gusty winds, small hail, and heavy rainfall.
Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Min temperature.....54-59.
24 hr trend......Unchanged.
Max humidity........76-82 percent.
24 hr trend......8 percent drier.
Humidity recovery...Excellent.
20-foot winds.......East winds 10 to 15 mph with gusts to around 30
mph until 0300, then downslope/downvalley 4-7
mph.
Ridge top winds.....East around 20 mph until 2400, then around 10
mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast around 20 mph until 2400, then east
around 10 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the afternoon. Chance of showers in
the afternoon. Chance of thunderstorms late in
the afternoon. Chance of precipitation 30
percent.
Chance of thunder...20 percent.
Max temperature.....83-88.
24 hr trend......4 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 50s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 80s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 80s. North
winds around 10 mph.
.MONDAY...Mostly clear. Lows in the mid 50s. Highs in the upper
80s. Southeast winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 50s.
Highs in the lower 90s.
$$
WYZ283-011115-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....76-81.
24 hr trend......1 degree warmer.
Min humidity........27-33 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph with gusts to around 25 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the evening. Chance
of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....51-56.
24 hr trend......1 degree warmer.
Max humidity........69-75 percent.
24 hr trend......8 percent drier.
Humidity recovery...Good.
20-foot winds.......Northeast winds 10 to 15 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....Northeast around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....East around 20 mph until 2400, then west around
10 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....80-85.
24 hr trend......3 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 80s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 80s. Winds
generally less than 10 mph.
.MONDAY...Mostly clear. Lows in the mid 50s. Highs around 90.
South winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 50s.
Highs in the lower 90s.
$$
WYZ285-011115-
South Bighorn Mountains-
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of thunderstorms early in the
afternoon. Slight chance of showers and
thunderstorms early in the afternoon, then
chance of showers and thunderstorms late in the
afternoon. Some thunderstorms may be severe
with heavy rainfall. Some thunderstorms may be
severe with gusty winds, small hail, and heavy
rainfall. Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....74-79.
24 hr trend......2 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms late in the
evening. Some thunderstorms may be severe with
gusty winds, small hail, and heavy rainfall.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Min temperature.....54-59.
24 hr trend......3 degrees warmer.
Max humidity........70-76 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......East winds 10 to 15 mph with gusts to around 30
mph until 0300, then south and gusty.
Ridge top winds.....East around 15 mph until 2400, then south.
Chc of wetting rain.15 percent until 2400, then zero percent.
Transport winds.....East around 20 mph until 2400, then south.
Mixing Height.......1400-3400 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and thunderstorms in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....76-81.
24 hr trend......3 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......13 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Northwest winds around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. North
winds around 10 mph.
.MONDAY...Mostly clear. Lows in the upper 50s. Highs in the lower
80s. Southeast winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 50s.
Highs in the lower 80s.
$$
WYZ281-011115-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the afternoon. Slight chance of showers in
the afternoon, then chance of showers and
thunderstorms late in the afternoon. Some
thunderstorms may be severe with heavy
rainfall. Some thunderstorms may be severe with
heavy rainfall. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....75-80.
24 hr trend......2 degrees warmer.
Min humidity........41-47 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southeast winds around 10 mph with higher
gusts.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms early in
the evening. Some thunderstorms may be severe
with heavy rainfall. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Min temperature.....56-61.
24 hr trend......Unchanged.
Max humidity........80-86 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......East winds around 15 mph with gusts to around
30 mph until 2100, then south with gusts to
around 30 mph.
Ridge top winds.....Southeast around 15 mph until 2400, then south.
Chc of wetting rain.20 percent until 2400, then zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the afternoon. Chance of showers in
the afternoon. Chance of thunderstorms late in
the afternoon. Chance of precipitation 40
percent.
Chance of thunder...30 percent.
Max temperature.....78-83.
24 hr trend......4 degrees warmer.
Min humidity........40-46 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then northwest.
Mixing Height.......600-2600 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 50s. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the mid 80s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 50s. Highs in the lower 80s. Winds generally less than
10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
South winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the upper 50s.
Highs around 90.
$$
WYZ282-011115-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms late in the afternoon. Some
thunderstorms may be severe with gusty winds,
small hail, and heavy rainfall early in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall early in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....77-82.
24 hr trend......Unchanged.
Min humidity........33-39 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph with gusts to around 25 mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms late in the
evening. Some thunderstorms may be severe with
gusty winds, small hail, and heavy rainfall.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........74-80 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 15 mph with gusts to around
30 mph until 2100, then southeast with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....East around 15 mph until 2400, then south.
Chc of wetting rain.20 percent until 2400, then zero percent.
Transport winds.....Northeast around 20 mph until 2400, then south
around 10 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....78-83.
24 hr trend......3 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs 84 to 89.
Winds generally less than 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 90s.
South winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the upper 50s.
Highs in the lower 90s.
$$
WYZ275-011115-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of showers and
thunderstorms late in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....74-79.
24 hr trend......Unchanged.
Min humidity........35-41 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms in the
evening. Some thunderstorms may be severe with
gusty winds, small hail, and heavy rainfall.
Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........70-76 percent.
24 hr trend......8 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 15 mph with gusts to
around 30 mph until 2100, then southeast with
gusts to around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then southeast.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 20 mph until 2400, then
southeast around 10 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of thunderstorms early in the
afternoon. Chance of showers in the afternoon.
Chance of thunderstorms late in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....78-83.
24 hr trend......4 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 80s. Winds
generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 55 to 60. Highs 85 to 90. South
winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the upper 50s.
Highs around 90.
$$
WYZ276-011115-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms early in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...50 percent.
Max temperature.....71-76.
24 hr trend......1 degree cooler.
Min humidity........44-50 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 15 mph with gusts to around 30 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3200-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms early
in the evening. Slight chance of showers early
in the evening. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall
early in the evening. Chance of precipitation
40 percent.
Chance of thunder...20 percent.
Min temperature.....53-58.
24 hr trend......2 degrees warmer.
Max humidity........64-70 percent.
24 hr trend......18 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2400, then southwest with gusts to
around 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then southwest.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....77-82.
24 hr trend......7 degrees warmer.
Min humidity........31-37 percent.
24 hr trend......12 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....West around 10 mph until 1200, then southwest.
Mixing Height.......2000-4000 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the mid 50s. Southwest
winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs around 80. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 50s. Highs in the upper 70s. Winds generally less than
10 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s. South
winds around 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 80s.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s.
$$
WYZ287-011115-
Owl Creek Mountains-
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms early in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...50 percent.
Max temperature.....72-77.
24 hr trend......Unchanged.
Min humidity........40-46 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph with gusts to around 25
mph until 1500, then northeast with gusts to
around 25 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms early in
the evening. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the evening. Chance of precipitation 40
percent.
Chance of thunder...30 percent.
Min temperature.....52-57.
24 hr trend......2 degrees warmer.
Max humidity........65-71 percent.
24 hr trend......17 percent drier.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2400, then
southwest. Gusts up to 25 mph.
Ridge top winds.....North around 15 mph until 2400, then southwest.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....North around 15 mph until 2400, then southwest.
Mixing Height.......1400-3400 ft agl until 2400, then 200-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....74-79.
24 hr trend......3 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......12 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the mid 50s. West winds
around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs around 80. Northwest winds around
10 mph.
.SUNDAY THROUGH MONDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 53 to 58. Highs 78 to 83.
Southwest winds around 10 mph.
.TUESDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
80s.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s.
$$
WYZ286-011115-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning, then
showers likely and chance of thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall
early in the afternoon. Some thunderstorms may
produce gusty winds, small hail, and heavy
rainfall in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...50 percent.
Max temperature.....64-69.
24 hr trend......1 degree cooler.
Min humidity........44-50 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then southeast.
Chc of wetting rain.Zero percent until 1200, then 30 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms in the
evening. Slight chance of showers in the
evening. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall in the
evening. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......2 degrees warmer.
Max humidity........70-76 percent.
24 hr trend......16 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 0300, then
west around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 2400, then
southwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast around 10 mph until 2400, then south.
Mixing Height.......1400-3400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....70-75.
24 hr trend......3 degrees warmer.
Min humidity........31-37 percent.
24 hr trend......17 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. West winds
around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs around 70. West winds
around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 40s. Highs in the upper 60s. West winds around 10 mph.
.MONDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.WEDNESDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ140-011115-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....70-75.
24 hr trend......3 degrees cooler.
Min humidity........33-39 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph until 1500, then
southeast. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......Unchanged.
Max humidity........77-83 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......East winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....72-77.
24 hr trend......Unchanged.
Min humidity........27-33 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 40s. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70.
.WEDNESDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ415-011115-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms early in the afternoon, then
slight chance of showers and thunderstorms late
in the afternoon. Some thunderstorms may
produce gusty winds, small hail, and heavy
rainfall in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....73-78.
24 hr trend......4 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....45-50.
24 hr trend......1 degree cooler.
Max humidity........68-74 percent.
24 hr trend......8 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph until 2400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......1 degree warmer.
Min humidity........25-31 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west
around 25 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s. South
winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 40s.
Highs 71 to 76.
$$
WYZ416-011115-
West Wind River Mountains/East Zone Bridger Teton NF-
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms late in the afternoon, then
slight chance of showers and thunderstorms late
in the afternoon. Some thunderstorms may
produce gusty winds, small hail, and heavy
rainfall in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....69-74.
24 hr trend......3 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....43-48.
24 hr trend......1 degree warmer.
Max humidity........55-61 percent.
24 hr trend......22 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Southwest around 15 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then east.
Mixing Height.......4200-6200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........23-29 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70. West winds
around 10 mph.
.SUNDAY...Mostly clear. Lows in the lower 40s. Highs in the upper
60s. West winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower
70s. Southwest winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 40s.
Highs 70 to 75.
$$
WYZ288-011115-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning. Chance
of showers and thunderstorms in the afternoon.
Some thunderstorms may produce gusty winds,
small hail, and heavy rainfall in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....71-76.
24 hr trend......1 degree warmer.
Min humidity........29-35 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear. Slight chance of showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall early in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......3 degrees warmer.
Max humidity........63-69 percent.
24 hr trend......25 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......1 degree warmer.
Min humidity........20-26 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. West winds
around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the upper 40s. Highs in the
lower 70s. West winds around 10 mph.
.SUNDAY THROUGH MONDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 47 to 52. Highs 72 to 77.
Southwest winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows around 50. Highs
74 to 79.
$$
WYZ414-011115-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......2 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......6 percent drier.
20-foot winds.......Southeast winds around 10 mph until 1200, then
southwest. Gusts up to 25 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 10800-12800
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......1 degree warmer.
Max humidity........61-67 percent.
24 hr trend......30 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then south.
Mixing Height.......5200-7200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....72-77.
24 hr trend......1 degree cooler.
Min humidity........19-25 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3400-5400 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
Winds generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Mostly clear. Lows in the mid 40s. Highs
73 to 78. Southwest winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the upper 40s.
Highs 73 to 78.
$$
WYZ277>279-011115-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, Pinedale, Green River, Rock Springs,
and Wamsutter
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....75-80.
24 hr trend......2 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph. Gusts up to 30 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 15 mph until 1200, then
southwest around 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......1 degree cooler.
Max humidity........55-61 percent.
24 hr trend......19 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2400, then east with gusts to
around 15 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then east.
Mixing Height.......5600-7600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....75-80.
24 hr trend......1 degree warmer.
Min humidity........16-22 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 11800-13800
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 80s.
Winds generally less than 10 mph.
.SUNDAY THROUGH MONDAY...Mostly clear. Lows in the upper 40s.
Highs 81 to 86. Southwest winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the upper 40s.
Highs in the mid 80s.
$$
WYZ289-011115-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....75-80.
24 hr trend......Unchanged.
Min humidity........21-27 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph with gusts to around 25 mph until
1500, then southwest with gusts to around 25
mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest around 20 mph.
Mixing Height.......800-2800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Some
thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the evening. Chance
of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....52-57.
24 hr trend......Unchanged.
Max humidity........65-71 percent.
24 hr trend......17 percent drier.
Humidity recovery...Good.
20-foot winds.......Southeast winds around 15 mph until 2100, then
northeast until 0300, then downslope/downvalley
4-7 mph. Gusts up to 25 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 15 to 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......2 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest around 10 mph until 1500, then west.
Gusts up to 25 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs in the
lower 80s. Northwest winds around 10 mph.
.MONDAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. South winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 50s.
Highs in the upper 80s.
$$
WYZ300-011115-
Casper Mountain-
301 AM MDT Thu Jul 31 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds, small hail, and heavy rainfall early in
the afternoon. Some thunderstorms may produce
gusty winds, small hail, and heavy rainfall
late in the afternoon. Chance of precipitation
50 percent.
Chance of thunder...30 percent.
Max temperature.....73-78.
24 hr trend......2 degrees warmer.
Min humidity........36-42 percent.
24 hr trend......6 percent drier.
20-foot winds.......Southeast winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 15 mph until 1200, then west.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....South around 15 mph until 1200, then southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms early
in the evening. Slight chance of showers early
in the evening. Some thunderstorms may be
severe with heavy rainfall. Chance of
precipitation 30 percent.
Chance of thunder...20 percent.
Min temperature.....54-59.
24 hr trend......4 degrees warmer.
Max humidity........66-72 percent.
24 hr trend......29 percent drier.
Humidity recovery...Good.
20-foot winds.......Southeast winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southeast 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southeast 15 to 20 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......3 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......12 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.FRIDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs around 80. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
North winds around 10 mph.
.MONDAY...Mostly clear. Lows in the upper 50s. Highs in the lower
80s. South winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 50s.
Highs in the mid 80s.
$$