575
FNUS76 KMTR 161958
FWSMTR

Spot Forecast for Big Leaf Prescribed  Burn...Sonoma County Regional Parks
National Weather Service San Francisco CA
1258 PM PDT Mon Jun 16 2025

Forecast is based on ignition time of 0500 PDT on June 17.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...A slight pattern change is in store for Tue and Wed with a
warming and drying trend on tap. The marine layer should be around 1000 to
1200 ft, perhaps touch lower, which will be the trickiest part of the
forecast. Currently, stratus isn`t expected to make it as far inland, but
overnight RH recovery should be within the 80-88 percent range tonight and
76-86 percent Tue night after minRH falling into the 31-41 percent and
26-37 percent ranges respectively. High temperatures climb into the 80s for
Tue and in the mid 80s to near 90 for Wed. Breezy onshore flow returns
each afternoon and evening.

.REST OF TONIGHT...

Sky/weather.........Mostly clear.
Min temperature.....44-51.
Max humidity........66-76 percent.
Wind (20 ft)........Northwest winds around 5 mph shifting to the
west and southwest overnight.
CWR.................0 percent.
Chance of thunder...0 percent.
Mixing height.......400 ft AGL.
Transport winds.....Northwest around 10 to 15 mph this evening decreasing
to 5 to 10 mph during the overnight hours.
Marine layer........1200ft.

.TUESDAY...

Sky/weather.........Sunny.
Max temperature.....80-88.
Min humidity........31-41 percent.
Wind (20 ft)........West winds 5 to 10 mph.
CWR.................0 percent.
Chance of thunder...0 percent.
Mixing height.......4200 ft AGL.
Transport winds.....Southerly around 5 mph during the early morning
shifting to the west or northwest around 7 mph by mid
to late morning.
Marine layer........1200ft.

.TUESDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....50-54.
Max humidity........76-86 percent.
Wind (20 ft)........Northwest winds 10 to 16 mph during the evening
decreasing to around 5 mph for the overnight hours.
CWR.................0 percent.
Chance of thunder...0 percent.
Mixing height.......300 ft AGL.
Transport winds.....Northwest around 7 mph.
Marine layer........1000ft.

.WEDNESDAY...

Sky/weather.........Sunny.
Max temperature.....86-91.
Min humidity........26-37 percent.
Wind (20 ft)........Light winds becoming west 6 to 12 mph in the
                    afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.
Mixing height.......4000 ft AGL.
Transport winds.....Northwest around 9 mph.
Marine layer........1000ft.

$$
Forecaster...K_ROGACHESKI
Requested by...Paul Weber - CARX
Type of request...PRESCRIBED
.TAG 2516010.0/MTR
.DELDT 06/16/25
.FormatterVersion 2.0.0
.EMAIL paul.weber@sonoma-county.org