Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Sacramento, CA

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976
FNUS56 KSTO 190730
FWFSTO

Fire Weather Planning Forecast for Interior Northern California
National Weather Service Sacramento CA
1230 AM PDT Tue Aug 19 2025

NOTE: THIS PRODUCT HAS UPDATED FORECAST DATA BUT THE FORECAST
DISCUSSION IS FROM THE PREVIOUS DAY.


.DISCUSSION...
Near normal temperatures, periodically breezy onshore flow, and
dry weather continue through midweek. Well above normal
temperatures then follow Thursday into the weekend with low
daytime humidity and poor to moderate overnight recovery. Isolated
mountain thunderstorm chances begin to increase Friday onward
along the Sierra crest as monsoonal moisture approaches the
region.




CAZ213-200000-
Eastern Portion of Shasta-Trinity NF-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........88-93 lower elevations...except 78-87
  higher elevations.
*   24 HR Trend..........6 degrees warmer.
* Min Humidity...........16-22 percent.
*   24 HR Trend..........7 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming south up
    to 7 mph in the afternoon.
*   Ridges/Upr Slopes....Northeast winds up to 7 mph shifting to the
    south 4 to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6100 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........60-65 lower elevations...except 50-60
  higher elevations.
*   24 HR Trend..........Little change.
* Max Humidity...........48-63 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Drainage winds up to 5 mph.
*   Ridges/Upr Slopes....Southwest winds up to 7 mph shifting to the
    north up to 8 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........700 ft AGL.
* Chance of thunder......1 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........94-99 lower elevations...except 83-93
  higher elevations.
* Min Humidity...........14-29 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph.
*   Ridges/Upr Slopes....Northeast winds up to 8 mph in the morning
    becoming variable up to 5 mph.
* Mixing Height..........7600 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ214-200000-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........83-88 lower elevations...except 78-83
  higher elevations.
*   24 HR Trend..........4 degrees warmer.
* Min Humidity...........15-20 percent.
*   24 HR Trend..........10 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west 4 to
    9 mph with local gusts up to 20 mph in the afternoon.
*   Ridges/Upr Slopes....Variable winds up to 7 mph becoming west 4
    to 9 mph with local gusts up to 20 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7100 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........46-51.
*   24 HR Trend..........Little change.
* Max Humidity...........58-65 percent lower elevations...except
  47-62 percent high elevations.
*   24 HR Trend..........5 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...West winds up to 8 mph with local gusts up
    to 20 mph in the evening becoming drainage up to 5 mph.
*   Ridges/Upr Slopes....Southwest winds 4 to 9 mph with local gusts
    up to 20 mph in the evening becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........700 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........87-92 lower elevations...except 80-86
  higher elevations.
* Min Humidity...........15-24 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph.
*   Ridges/Upr Slopes....Variable winds up to 7 mph.
* Mixing Height..........7100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ215-200000-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........91-96.
*   24 HR Trend..........6 degrees warmer.
* Min Humidity...........17-23 percent.
*   24 HR Trend..........8 percent down.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
  south 4 to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6000 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........61-66.
*   24 HR Trend..........Little change.
* Max Humidity...........50-60 percent.
*   24 HR Trend..........5 percent down.
* 20-Foot Winds..........South winds up to 8 mph shifting to the
  north up to 6 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........97-102.
* Min Humidity...........14-26 percent.
* 20-Foot Winds..........North winds up to 8 mph.
* Mixing Height..........7000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ216-200000-
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........88-93.
*   24 HR Trend..........4 degrees warmer.
* Min Humidity...........23-30 percent.
*   24 HR Trend..........10 percent down.
* 20-Foot Winds..........Northeast winds up to 7 mph shifting to
  the south 4 to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4300 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........58-63.
*   24 HR Trend..........Little change.
* Max Humidity...........62-77 percent.
*   24 HR Trend..........5 percent down.
* 20-Foot Winds..........Southeast winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........93-98.
* Min Humidity...........18-33 percent.
* 20-Foot Winds..........North winds up to 8 mph.
* Mixing Height..........5000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ217-200000-
Southern Sacramento Valley in Yolo-
Sacramento Far Western Placer, southern Sutter and Solano County
Below 1000 Ft-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........88-93.
*   24 HR Trend..........Little change.
* Min Humidity...........23-28 percent.
*   24 HR Trend..........5 percent down.
* 20-Foot Winds..........Southwest winds 4 to 9 mph. Local gusts up
  to 20 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4500 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........55-60.
*   24 HR Trend..........Little change.
* Max Humidity...........71-86 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........South winds up to 8 mph. Local gusts up to
  20 mph in the evening.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........95-100.
* Min Humidity...........15-30 percent.
* 20-Foot Winds..........Northwest winds up to 8 mph.
* Mixing Height..........4500 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ218-200000-
Carquinez Strait and Delta-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........83-89.
*   24 HR Trend..........Little change.
* Min Humidity...........27-39 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........West winds 7 to 13 mph with local gusts up
  to 25 mph.
* CWR....................0 percent.
* Mixing Height..........3100 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........56-61.
*   24 HR Trend..........Little change.
* Max Humidity...........81-90 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds 6 to 12 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........89-97.
* Min Humidity...........33-48 percent.
* 20-Foot Winds..........West winds 5 to 11 mph. Local gusts up to
  20 mph in the morning.
* Mixing Height..........3500 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ219-200000-
Northern San Joaquin Valley in San Joaquin and Stanislaus
Counties Below 1000 ft-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........88-93.
*   24 HR Trend..........Little change.
* Min Humidity...........24-29 percent.
*   24 HR Trend..........5 percent down.
* 20-Foot Winds..........Northwest winds 7 to 13 mph.
* CWR....................0 percent.
* Mixing Height..........4300 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........56-61.
*   24 HR Trend..........Little change.
* Max Humidity...........60-75 percent.
*   24 HR Trend..........4 percent up.
* 20-Foot Winds..........Northwest winds 7 to 13 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........92-97.
* Min Humidity...........14-28 percent.
* 20-Foot Winds..........Northwest winds 7 to 13 mph.
* Mixing Height..........4000 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ263-279-200000-
Southeast Edge Shasta-Trinity NF and Western Portions of Tehama-
Glenn Unit-Eastern Mendocino NF-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........88-93 lower elevations...except 73-83
  higher elevations.
*   24 HR Trend..........5 degrees warmer.
* Min Humidity...........22-29 percent.
*   24 HR Trend..........8 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southeast
    up to 8 mph in the afternoon.
*   Ridges/Upr Slopes....East winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........5900 ft AGL.
* Chance of thunder......1 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........66-71 lower elevations...except 57-64
  higher elevations.
*   24 HR Trend..........4 degrees warmer.
* Max Humidity...........40-49 percent.
*   24 HR Trend..........7 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...West winds 5 to 11 mph.
*   Ridges/Upr Slopes....Northwest winds 5 to 11 mph.
* CWR....................0 percent.
* Mixing Height..........600 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........93-98 lower elevations...except 77-87
  higher elevations.
* Min Humidity...........19-34 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...North winds 4 to 9 mph.
*   Ridges/Upr Slopes....North winds 4 to 9 mph.
* Mixing Height..........7100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ266-200000-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........86-91 lower elevations...except 81-87
  higher elevations.
*   24 HR Trend..........5 degrees warmer.
* Min Humidity...........18-26 percent.
*   24 HR Trend..........8 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...North winds up to 8 mph shifting to the
    southwest 4 to 9 mph in the afternoon.
*   Ridges/Upr Slopes....North winds up to 8 mph shifting to the
    southwest in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5400 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........61-67.
*   24 HR Trend..........Little change.
* Max Humidity...........36-46 percent.
*   24 HR Trend..........6 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...East winds 4 to 9 mph.
*   Ridges/Upr Slopes....East winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........92-97 lower elevations...except 86-92
  higher elevations.
* Min Humidity...........15-29 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northeast winds 5 to 11 mph shifting to the
    west up to 8 mph in the afternoon.
*   Ridges/Upr Slopes....Northeast winds 4 to 9 mph shifting to the
    west up to 7 mph in the afternoon.
* Mixing Height..........5900 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ220-267-200000-
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Toulumne-Calaveras Unit-
Northern Motherlode From 1000 to 3000 Ft. Includes portions of
Nevada-Yuba-Placer-Amador and Eldorado Units-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........85-90.
*   24 HR Trend..........4 degrees warmer.
* Min Humidity...........23-28 percent.
*   24 HR Trend..........4 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southwest winds up to 8 mph.
*   Ridges/Upr Slopes....Variable winds up to 7 mph becoming west 4
    to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5100 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........59-64.
*   24 HR Trend..........Little change.
* Max Humidity...........46-56 percent.
*   24 HR Trend..........6 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...West winds up to 8 mph shifting to the
    northeast up to 7 mph after midnight.
*   Ridges/Upr Slopes....Northwest winds up to 7 mph shifting to the
    northeast after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........90-95.
* Min Humidity...........13-24 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northeast winds up to 7 mph shifting to the
    west up to 8 mph in the afternoon.
*   Ridges/Upr Slopes....Northeast winds up to 7 mph shifting to the
    west up to 8 mph in the afternoon.
* Mixing Height..........4800 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ268-200000-
Northern Sierra Including Lassen NP and Plumas and Lassen NF/S
West of the Sierra Crest (West of Evans Peak-Grizzly Peak-
Beckworth Peak)-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........76-84 lower elevations...except 70-78
  higher elevations.
*   24 HR Trend..........4 degrees warmer.
* Min Humidity...........18-27 percent.
*   24 HR Trend..........7 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...South winds 5 to 11 mph.
*   Ridges/Upr Slopes....Southwest winds 5 to 11 mph.
* CWR....................0 percent.
* Mixing Height..........5600 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........46-56.
*   24 HR Trend..........Little change.
* Max Humidity...........38-53 percent...except 57-72 percent in
  the high mountain valleys.
*   24 HR Trend..........6 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southwest winds up to 8 mph shifting to the
    northeast 4 to 9 mph after midnight.
*   Ridges/Upr Slopes....Southwest winds up to 8 mph shifting to the
    northeast after midnight.
* CWR....................0 percent.
* Mixing Height..........300 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........81-87 lower elevations...except 74-82
  higher elevations.
* Min Humidity...........14-29 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northeast winds 4 to 9 mph shifting to the
    west up to 7 mph in the afternoon.
*   Ridges/Upr Slopes....Northeast winds 4 to 9 mph shifting to the
    west up to 7 mph in the afternoon.
* Mixing Height..........6700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ221-269-200000-
Stanislaus NF West of the Sierra Crest-
Northern Sierra Including the Tahoe and Eldorado NF/S West of the
Sierra Crest-
1230 AM PDT Tue Aug 19 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........81-86 lower elevations...except 69-79
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........23-29 percent.
*   24 HR Trend..........6 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southwest winds 5 to 11 mph.
*   Ridges/Upr Slopes....Southwest winds 5 to 11 mph.
* CWR....................0 percent.
* Mixing Height..........5100 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........54-63 lower elevations...except 44-54
  higher elevations.
*   24 HR Trend..........Little change.
* Max Humidity...........44-58 percent.
*   24 HR Trend..........6 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northeast winds up to 7 mph.
*   Ridges/Upr Slopes....Southwest winds 4 to 10 mph shifting to the
    east up to 8 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........300 ft AGL.
* Chance of thunder......0 percent.

.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature........85-91 lower elevations...except 72-82
  higher elevations.
* Min Humidity...........14-29 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northeast winds up to 7 mph shifting to the
    west up to 8 mph in the afternoon.
*   Ridges/Upr Slopes....East winds up to 8 mph shifting to the west
    4 to 9 mph in the afternoon.
* Mixing Height..........5400 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$


.Extended...

...Shasta County Mountains and Coastal Range
.WEDNESDAY NIGHT...Clear. Lows 56 to 66. Northwest winds 5 to
15 mph.
.THURSDAY...Sunny. Highs 87 to 97. Northeast winds 5 to 15 mph.
.THURSDAY NIGHT...Mostly clear. Lows 58 to 68. Northwest winds up
to 10 mph.
.FRIDAY...Mostly sunny. Highs 87 to 97. Southeast winds up to
10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 60 to 70. Variable less than
5 mph.
.SATURDAY...Sunny. Highs 87 to 97. Southeast winds up to 10 mph.
.SATURDAY NIGHT...Clear. Lows 61 to 71. Variable less than 5 mph.

...Northern Sierra and Lassen Park
.WEDNESDAY NIGHT...Clear. Lows 55 to 65. Northeast winds 5 to
15 mph.
.THURSDAY...Sunny. Highs 88 to 96. South winds 5 to 15 mph.
.THURSDAY NIGHT...Mostly clear. Lows 59 to 69. Northeast winds up
to 10 mph.
.FRIDAY...Mostly sunny. Highs 88 to 98. Southwest winds up to
10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 60 to 70. Variable less than
5 mph.
.SATURDAY...Partly cloudy with a slight chance of showers. Highs
88 to 97. Southwest winds up to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 61 to 71. Variable less than
5 mph.

...Sierra Nevada Foothills
.WEDNESDAY NIGHT...Clear. Lows 64 to 70. Northeast winds up to
10 mph.
.THURSDAY...Sunny. Highs 94 to 99. West winds 5 to 15 mph.
.THURSDAY NIGHT...Mostly clear. Lows 68 to 73. East winds up to
10 mph.
.FRIDAY...Mostly sunny. Highs 95 to 100. Variable less than
5 mph.
.FRIDAY NIGHT...Mostly clear. Lows 70 to 75. Variable less than
5 mph.
.SATURDAY...Mostly sunny. Highs 95 to 100. Variable less than
5 mph.
.SATURDAY NIGHT...Clear. Lows 69 to 75. Variable less than 5 mph.

...Central Valley and Delta
.WEDNESDAY NIGHT...Clear. Lows 62 to 67. West winds 5 to 15 mph.
.THURSDAY...Sunny. Highs 99 to 104. Northwest winds 5 to 15 mph.
.THURSDAY NIGHT...Mostly clear. Lows 62 to 68. Southwest winds
5 to 15 mph.
.FRIDAY...Mostly sunny. Highs 99 to 104. West winds up to 10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 63 to 70. Southwest winds up
to 10 mph.
.SATURDAY...Sunny. Highs 98 to 103. West winds up to 10 mph.
.SATURDAY NIGHT...Clear. Lows 61 to 69. Southwest winds up to
10 mph.

$$