418
FNUS76 KMTR 092127
FWSMTR

Spot Forecast for Grant Ranch Rx...CALFIRE/SCU
National Weather Service San Francisco CA
227 PM PDT Thu Oct 9 2025

Forecast is based on ignition time of 1756 PDT on October 09.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Cool conditions persist through the upcoming week.
Light to gentle breezes develop each afternoon and evening before
winds turn light and terrain-driven overnight and in the morning.
The marine layer remains very deep with the potential for some
marine layer influence to persist into Friday. The next chance for
rainfall arrives early next week, with moderate confidence
(50-60% probability) of wetting rains at the project site.

.TONIGHT...

Sky/weather.........Mostly clear then becoming mostly cloudy.
                    Patchy fog overnight.
Min temperature.....47-52.
Max humidity........90-100 percent.
Wind (20 ft)........Southwest winds 5 to 6 mph gusting to 12 mph in
                    the evening becoming light and terrain driven
                    overnight.
CWR.................1 percent.
Chance of thunder...0 percent.
Mixing height.......400 ft AGL.
Transport winds.....Southwest around 6 mph.
Marine layer........3000ft.

.FRIDAY...

Sky/weather.........Mostly cloudy in the morning, then sunny.
Max temperature.....67-71.
Min humidity........48-52 percent.
Wind (20 ft)........Northwest winds 5 to 9 mph gusting to 15 mph
                    in the afternoon.
CWR.................1 percent.
Chance of thunder...0 percent.
Mixing height.......3900 ft AGL.
Transport winds.....West around 6 mph.
Marine layer........3000ft.

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy.
Min temperature.....46-51.
Max humidity........90-100 percent.
Wind (20 ft)........Northwest winds 5 to 7 mph gusting to 12 mph
                    in the evening becoming light and terrain driven
                    overnight.
CWR.................1 percent.
Chance of thunder...0 percent.
Mixing height.......300 ft AGL.
Transport winds.....Northwest around 9 mph.
Marine layer........None.

$$
Forecaster...D_HOANG
Requested by...Eric Couper
Type of request...PRESCRIBED
.TAG 2522957.4/MTR
.DELDT 10/09/25
.FormatterVersion 2.0.0
.EMAIL cole.periera@fire.ca.gov,alex.mikesell@fire.ca.gov,scu.ecc@fire.ca.gov