357
FNUS76 KMTR 010645
FWSMTR

Spot Forecast for Castle Hill- Piles...Contra Costa County Fire
National Weather Service San Francisco CA
1145 PM PDT Tue Apr 30 2024

Forecast is based on ignition time of 1000 PDT on May 01.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Dry weather prevailing through Thursday with surface
high pressure over far northern California. Gusty north to northwest
winds reaching hill tops and mountain tops in the East Bay, transport
winds also increasing. At this point it does not appear favorable for
gusty winds to reach the prescription site, however nearby observations
should still be closely monitored. An upper level low pressure system
and surface cold front will bring rain to the Bay Area Friday night
and Saturday.

.WEDNESDAY...

Sky/weather.........Sunny.
Max temperature.....74-78.
Min humidity........18-22 percent.
Wind (20 ft)........Northwest winds 9 to 13 mph.
CWR.................0 percent.
LAL.................1.
Mixing height.......1000 ft AGL, increasing to 4500 ft AGL in the
afternoon.
Transport winds.....North around 15 mph, becoming northwest around 15
mph in the afternoon.
Marine layer........None.

.WEDNESDAY NIGHT...

Sky/weather.........Clear.
Min temperature.....46-50.
Max humidity........65-69 percent.
Wind (20 ft)........West winds 6 to 10 mph.
CWR.................0 percent.
LAL.................1.
Mixing height.......4000 ft AGL early, decreasing to 800 ft AGL around
midnight.
Transport winds.....Northwest around 8 mph.
Marine layer........None.

.THURSDAY...

Sky/weather.........Sunny.
Max temperature.....75-79.
Min humidity........33-37 percent.
Wind (20 ft)........West winds 5 to 10 mph.
CWR.................0 percent.
LAL.................1.
Mixing height.......800 ft AGL in the morning, increasing to 4000 ft AGL
in the afternoon.
Transport winds.....Northwest around 10 mph, increasing to 25 to 30 mph
in the afternoon.
Marine layer........None.

$$
Forecaster...R_CANEPA
Requested by...Aaron Brunton
Type of request...PRESCRIBED
.TAG 2412637.0/MTR
.DELDT 05/01/24
.FormatterVersion 2.0.0
.EMAIL abrun@cccfpd.org