Spot Forecast
Issued by NWS San Francisco Bay Area, CA

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FNUS76 KMTR 220138
FWSMTR

Spot Forecast for Watson...Cal Fire
National Weather Service San Francisco CA
638 PM PDT Thu Aug 21 2025

Forecast is based on forecast start time of 0800 PDT on August 22.
If conditions become unrepresentative, contact the National Weather
Service.

...HEAT ADVISORY IN EFFECT UNTIL 9 PM PDT SATURDAY...

.DISCUSSION...Hot and dry conditions continue at the incident
site through the weekend. Breezy northwest winds are expected to
develop each afternoon and evening. Complex terrain near the
incident site may impact wind direction, especially when winds
become light and variable overnight. Poor to fair daytime humidity
retention continues through the week. A cooling trend early next
week will bring improving overnight humidity recoveries to the
incident site.

.FRIDAY...

Sky/weather.........Sunny.
Max temperature.....97-101.
Min humidity........20-25 percent.
Wind (20 ft)........Northwest winds 5 to 13 mph.
CWR.................1 percent.
Chance of thunder...2 percent.
Mixing height.......3300 ft AGL.
Transport winds.....West around 7 mph.
Marine layer........None.

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy.
Min temperature.....59-63, possibly warmer in the thermal belts.
Max humidity........70-80 percent, possibly drier in the thermal belts.
Wind (20 ft)........West winds 8 to 12 mph in the evening becoming
                    light and variable overnight.
CWR.................1 percent.
Chance of thunder...0 percent.
Mixing height.......800 ft AGL.
Transport winds.....Northwest around 5 mph.
Marine layer........None.

.SATURDAY...

Sky/weather.........Mostly sunny.
Max temperature.....93-97.
Min humidity........25-30 percent.
Wind (20 ft)........Northwest winds 5 to 7 mph shifting to the
                    southwest 6 to 14 mph in the afternoon.
CWR.................2 percent.
Chance of thunder...0 percent.
Mixing height.......3000 ft AGL.
Transport winds.....Southwest around 7 mph.
Marine layer........None.

$$
Forecaster...D_HOANG
Requested by...SCU ECC
Type of request...WILDFIRE
.TAG 2520424.0/MTR
.DELDT 08/21/25
.FormatterVersion 2.0.0
.EMAIL john.corona@fire.ca.gov