855
FNUS56 KSTO 060730
FWFSTO

Fire Weather Planning Forecast for Interior Northern California
National Weather Service Sacramento CA
1230 AM PDT Wed Aug 6 2025

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



.DISCUSSION...
Dry and increasingly warmer weather is expected this week as
temperatures trend above normal by the end of the week. Valley
onshore flow and terrain driven flow elsewhere will allow for
modest humidity recovery through the week, with lowest daytime
humidity in the teens to 20s and more limited recovery then
anticipated from Friday onward.


CAZ213-070000-
Eastern Portion of Shasta-Trinity NF-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny in the morning then becoming
  partly cloudy.
* Max Temperature........90-96 lower elevations...except 80-89
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........20-27 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming south up
    to 8 mph in the afternoon.
*   Ridges/Upr Slopes....North winds up to 8 mph shifting to the
    southwest 4 to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........8000 ft AGL.
* Chance of thunder......2 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........63-68 lower elevations...except 53-63
  higher elevations.
*   24 HR Trend..........Little change.
* Max Humidity...........57-72 percent.
*   24 HR Trend..........11 percent up.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northwest winds 4 to 10 mph.
*   Ridges/Upr Slopes....North winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........700 ft AGL.
* Chance of thunder......1 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98 lower elevations...except 81-91
  higher elevations.
* Min Humidity...........17-30 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...North winds up to 8 mph in the morning
    becoming upslope up to 5 mph.
*   Ridges/Upr Slopes....North winds 5 to 11 mph shifting to the
    southwest up to 7 mph in the afternoon.
* Mixing Height..........7500 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ214-070000-
Burney Basin and Northeast Plateau in Shasta County Including
Northwest Lassen NF north of Lassen NP-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny in the morning then becoming
  partly cloudy.
* Max Temperature........83-88 lower elevations...except 78-83
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........19-24 percent.
*   24 HR Trend..........Little change.
* 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..........7600 ft AGL.
* Chance of thunder......2 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........52-57 lower elevations...except 47-56
  higher elevations.
*   24 HR Trend..........Little change.
* Max Humidity...........62-75 percent.
*   24 HR Trend..........11 percent up.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...West winds 4 to 9 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 shifting to the east up to 7 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........800 ft AGL.
* Chance of thunder......1 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........86-91 lower elevations...except 79-85
  higher elevations.
* Min Humidity...........21-32 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming northwest
    up to 7 mph in the afternoon.
*   Ridges/Upr Slopes....Variable winds up to 7 mph becoming
    northwest up to 8 mph with local gusts up to 20 mph in the
    afternoon.
* Mixing Height..........7700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ215-070000-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny in the morning then becoming
  partly cloudy.
* Max Temperature........94-99.
*   24 HR Trend..........Little change.
* Min Humidity...........20-25 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 6 mph shifting to the
  south up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7800 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........66-71.
*   24 HR Trend..........Little change.
* Max Humidity...........51-58 percent.
*   24 HR Trend..........5 percent up.
* 20-Foot Winds..........Northwest winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........700 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........95-100.
* Min Humidity...........17-32 percent.
* 20-Foot Winds..........North winds up to 8 mph shifting to the
  south up to 7 mph in the afternoon.
* Mixing Height..........7300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ216-070000-
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-97.
*   24 HR Trend..........Little change.
* Min Humidity...........22-33 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........North winds up to 8 mph shifting to the
  south 4 to 9 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........4500 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........64-69.
*   24 HR Trend..........4 degrees warmer.
* Max Humidity...........53-68 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........South winds 5 to 11 mph shifting to the
  northeast 4 to 9 mph after midnight.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-97.
* Min Humidity...........21-36 percent.
* 20-Foot Winds..........Northeast winds up to 8 mph shifting to
  the south in the afternoon.
* Mixing Height..........5200 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ217-070000-
Southern Sacramento Valley in Yolo-
Sacramento Far Western Placer, southern Sutter and Solano County
Below 1000 Ft-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........94-99.
*   24 HR Trend..........5 degrees warmer.
* Min Humidity...........21-26 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........West winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........5200 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........59-65.
*   24 HR Trend..........Little change.
* Max Humidity...........62-77 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........South winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........93-98.
* Min Humidity...........20-35 percent.
* 20-Foot Winds..........South winds up to 8 mph.
* Mixing Height..........4700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ218-070000-
Carquinez Strait and Delta-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........90-96.
*   24 HR Trend..........7 degrees warmer.
* Min Humidity...........25-33 percent.
*   24 HR Trend..........6 percent down.
* 20-Foot Winds..........West winds 6 to 12 mph.
* CWR....................0 percent.
* Mixing Height..........4100 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........58-63.
*   24 HR Trend..........Little change.
* Max Humidity...........75-86 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........Southwest winds 7 to 13 mph with local
  gusts up to 25 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........85-95.
* Min Humidity...........44-59 percent.
* 20-Foot Winds..........West winds 6 to 12 mph. Local gusts up to
  20 mph in the morning.
* Mixing Height..........3100 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ219-070000-
Northern San Joaquin Valley in San Joaquin and Stanislaus
Counties Below 1000 ft-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Sunny.
* Max Temperature........94-99.
*   24 HR Trend..........6 degrees warmer.
* Min Humidity...........19-24 percent.
*   24 HR Trend..........4 percent down.
* 20-Foot Winds..........Northwest winds 6 to 12 mph.
* CWR....................0 percent.
* Mixing Height..........4900 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Clear.
* Min Temperature........61-66.
*   24 HR Trend..........Little change.
* Max Humidity...........53-68 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........Northwest winds 8 to 14 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Sunny.
* Max Temperature........93-98.
* Min Humidity...........17-32 percent.
* 20-Foot Winds..........Northwest winds 5 to 11 mph.
* Mixing Height..........4500 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ263-279-070000-
Southeast Edge Shasta-Trinity NF and Western Portions of Tehama-
Glenn Unit-Eastern Mendocino NF-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........91-96 lower elevations...except 76-86
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........23-30 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...North winds 5 to 11 mph shifting to the
    southeast 4 to 9 mph in the afternoon.
*   Ridges/Upr Slopes....Northwest winds 5 to 11 mph shifting to the
    southwest in the afternoon.
* CWR....................0 percent.
* Mixing Height..........7300 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........68-73 lower elevations...except 58-66
  higher elevations.
*   24 HR Trend..........Little change.
* Max Humidity...........44-55 percent.
*   24 HR Trend..........6 percent up.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...West winds 7 to 13 mph.
*   Ridges/Upr Slopes....Northwest winds 7 to 13 mph.
* CWR....................0 percent.
* Mixing Height..........700 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........92-97 lower elevations...except 77-87
  higher elevations.
* Min Humidity...........23-38 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northwest winds 5 to 11 mph shifting to the
    east up to 8 mph in the afternoon.
*   Ridges/Upr Slopes....Northwest winds 6 to 12 mph shifting to the
    east up to 8 mph in the afternoon.
* Mixing Height..........6600 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ266-070000-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny in the morning then becoming
  partly cloudy.
* Max Temperature........89-94 lower elevations...except 84-89
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........20-25 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northwest winds up to 8 mph shifting to the
    southwest in the afternoon.
*   Ridges/Upr Slopes....North winds up to 7 mph shifting to the
    southwest in the afternoon.
* CWR....................0 percent.
* Mixing Height..........6300 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........64-71.
*   24 HR Trend..........Little change.
* Max Humidity...........39-51 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...East winds up to 8 mph.
*   Ridges/Upr Slopes....East winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........90-95 lower elevations...except 85-91
  higher elevations.
* Min Humidity...........21-36 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Northeast winds up to 8 mph shifting to the
    southwest up to 7 mph in the afternoon.
*   Ridges/Upr Slopes....East winds up to 8 mph in the morning
    becoming variable up to 5 mph.
* Mixing Height..........6600 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ220-267-070000-
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 Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........91-96 lower elevations...except 86-91
  higher elevations.
*   24 HR Trend..........4 degrees warmer.
* Min Humidity...........18-23 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest
    up to 8 mph in the afternoon.
*   Ridges/Upr Slopes....Variable winds up to 7 mph becoming
    southwest up to 8 mph in the afternoon.
* CWR....................0 percent.
* Mixing Height..........5700 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........63-68.
*   24 HR Trend..........Little change.
* Max Humidity...........40-49 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...West winds up to 7 mph in the evening
    becoming drainage up to 5 mph.
*   Ridges/Upr Slopes....West winds up to 7 mph in the evening
    becoming variable up to 5 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Sunny.
* Max Temperature........88-94.
* Min Humidity...........13-26 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest
    up to 8 mph in the afternoon.
*   Ridges/Upr Slopes....Variable winds up to 7 mph becoming
    southwest up to 8 mph in the afternoon.
* Mixing Height..........5700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ268-070000-
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 Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........77-85 lower elevations...except 71-78
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........21-28 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southwest winds 4 to 10 mph.
*   Ridges/Upr Slopes....Southwest winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........5700 ft AGL.
* Chance of thunder......1 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........51-61 lower elevations...except 48-56
  higher elevations.
*   24 HR Trend..........Little change.
* Max Humidity...........46-61 percent...except 61-70 percent in
  the high mountain valleys.
*   24 HR Trend..........4 percent up.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southwest winds 4 to 9 mph shifting to the
    east up to 7 mph after midnight.
*   Ridges/Upr Slopes....South winds 4 to 9 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......1 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........79-85 lower elevations...except 71-79
  higher elevations.
* Min Humidity...........22-37 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...East winds up to 8 mph shifting to the
    southwest in the afternoon.
*   Ridges/Upr Slopes....East winds up to 8 mph shifting to the
    southwest 4 to 9 mph in the afternoon.
* Mixing Height..........6300 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$

CAZ221-269-070000-
Stanislaus NF West of the Sierra Crest-
Northern Sierra Including the Tahoe and Eldorado NF/S West of the
Sierra Crest-
1230 AM PDT Wed Aug 6 2025

.TODAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........83-88 lower elevations...except 71-81
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........20-25 percent.
*   24 HR Trend..........Little change.
* 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..........5200 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature........57-66 lower elevations...except 46-56
  higher elevations.
*   24 HR Trend..........Little change.
* Max Humidity...........40-55 percent.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southwest winds up to 7 mph shifting to the
    east after midnight.
*   Ridges/Upr Slopes....South winds 4 to 10 mph.
* CWR....................0 percent.
* Mixing Height..........300 ft AGL.
* Chance of thunder......0 percent.

.THURSDAY...
* Sky/Weather............Mostly sunny.
* Max Temperature........83-89 lower elevations...except 70-80
  higher elevations.
* Min Humidity...........21-36 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...East winds up to 7 mph shifting to the
    southwest 4 to 9 mph in the afternoon.
*   Ridges/Upr Slopes....South winds 5 to 11 mph. Local gusts up to
    25 mph in the afternoon.
* Mixing Height..........5700 ft AGL.
* CWR....................0 percent.
* Chance of thunder......0 percent.


$$


.Extended...

...Shasta County Mountains and Coastal Range
.THURSDAY NIGHT...Mostly clear. Lows 55 to 65. Northwest winds
5 to 15 mph.
.FRIDAY...Sunny. Highs 84 to 94. Northeast winds 5 to 15 mph.
.FRIDAY NIGHT...Clear. Lows 58 to 68. Northwest winds 5 to
15 mph.
.SATURDAY...Sunny. Highs 87 to 97. Variable less than 5 mph.
.SATURDAY NIGHT...Mostly clear. Lows 59 to 69. West winds up to
10 mph.
.SUNDAY...Sunny. Highs 87 to 97. East winds up to 10 mph.
.SUNDAY NIGHT...Clear. Lows 61 to 71. Variable less than 5 mph.

...Northern Sierra and Lassen Park
.THURSDAY NIGHT...Mostly clear. Lows 54 to 64. Northeast winds up
to 10 mph.
.FRIDAY...Sunny. Highs 84 to 92. South winds 5 to 15 mph.
.FRIDAY NIGHT...Clear. Lows 57 to 67. Northeast winds up to
10 mph.
.SATURDAY...Sunny. Highs 86 to 94. Variable less than 5 mph.
.SATURDAY NIGHT...Clear. Lows 58 to 68. Variable less than 5 mph.
.SUNDAY...Sunny. Highs 86 to 95. Variable less than 5 mph.
.SUNDAY NIGHT...Clear. Lows 59 to 69. Variable less than 5 mph.

...Sierra Nevada Foothills
.THURSDAY NIGHT...Mostly clear. Lows 64 to 69. East winds up to
10 mph.
.FRIDAY...Sunny. Highs 92 to 97. West winds 5 to 15 mph.
.FRIDAY NIGHT...Clear. Lows 66 to 71. Northeast winds up to
10 mph.
.SATURDAY...Sunny. Highs 93 to 99. Variable less than 5 mph.
.SATURDAY NIGHT...Clear. Lows 66 to 71. Variable less than 5 mph.
.SUNDAY...Sunny. Highs 92 to 98. Variable less than 5 mph.
.SUNDAY NIGHT...Clear. Lows 66 to 72. Variable less than 5 mph.

...Central Valley and Delta
.THURSDAY NIGHT...Clear. Lows 60 to 66. Southwest winds 5 to
15 mph.
.FRIDAY...Sunny. Highs 97 to 102. Northwest winds up to 10 mph.
.FRIDAY NIGHT...Clear. Lows 63 to 69. Southwest winds 5 to
15 mph.
.SATURDAY...Sunny. Highs 98 to 103. West winds up to 10 mph.
.SATURDAY NIGHT...Clear. Lows 61 to 67. Southwest winds up to
10 mph.
.SUNDAY...Sunny. Highs 97 to 102. Southwest winds up to 10 mph.
.SUNDAY NIGHT...Clear. Lows 61 to 67. Southwest winds up to
10 mph.

$$