Spot Forecast
Issued by NWS San Francisco Bay Area, CA

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496
FNUS76 KMTR 261342
FWSMTR

Spot Forecast for Switchback 1...CAL FIRE
National Weather Service San Francisco CA
642 AM PDT Sat Sep 26 2026

Forecast is based on ignition time of 0730 PDT on September 26.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...High clouds will come over the project site through
the day with fair daytime humidity retention and excellent
overnight recoveries. A gentle to moderate southwest wind will
develop in the afternoon and evening hours, with winds light and
terrain-driven overnight. The high clouds should move out
overnight and leave sunny skies tomorrow, but an incoming low
should result in cooler and moister conditions, while the
afternoon winds shift to the northwest.

.REST OF TODAY...

Sky/weather.........Mostly cloudy.
Max temperature.....67-71.
Min humidity........50-60 percent.
Wind (20 ft)........Light, terrain-driven winds in the morning, becoming
                    southwest 8 to 13 mph in the afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.
Mixing height.......2000 ft AGL.
Transport winds.....Southwest around 6 mph.
Marine layer........None.

.TONIGHT...

Sky/weather.........Mostly cloudy in the evening, becoming partly cloudy
                    overnight.
Min temperature.....48-52.
Max humidity........95-99 percent.
Wind (20 ft)........Southwest winds 5 to 8 mph in the evening, becoming
                    light and terrain-driven overnight.
CWR.................0 percent.
Chance of thunder...0 percent.
Mixing height.......400 ft AGL.
Transport winds.....Northwest around 8 mph.
Marine layer........None.

.SUNDAY...

Sky/weather.........Sunny.
Max temperature.....65-69.
Min humidity........60-70 percent.
Wind (20 ft)........Light, terrain-driven winds in the morning, becoming
                    northwest 6 to 10 mph in the afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.
Mixing height.......2000 ft AGL.
Transport winds.....Northwest around 8 mph.
Marine layer........None.

$$
Forecaster...D_HOANG
Requested by...Marshall Turbeville
Type of request...PRESCRIBED
.TAG 2622226.3/MTR
.DELDT 09/26/26
.FormatterVersion 2.0.0
.EMAIL marshall.turbeville@fire.ca.gov