FNUS76 KMTR 261933

FWSMTR



Spot Forecast for Hanna Ctr. Burn...SON

National Weather Service San Francisco CA

1233 PM PDT Thu Jun 26 2025



Forecast is based on ignition time of 1700 PDT on June 26. 

If conditions become unrepresentative, contact the National Weather

Service.



.DISCUSSION...Continued sunny and warm the rest of Thursday afternoon

with a southwesterly seabreeze up the Highway 12 corridor.  Good

humidity recovery tonight as the  marine layer tries to push back 

inland. However its getting compressed and low clouds looks unlikely

at this time.  The trend for Friday is hotter and drier which is a 

watch out situation.  Highs back into the 90s with RH values to around

30 percent. Light southwest seabreeze late in the day.  Moderate RH 

recovery Friday night. Continued hot and dry Saturday before a noted 

cooling trend arrives Sunday over the burn site.



.THURSDAY...



Sky/weather.........Sunny. 

Max temperature.....87-91. 

Min humidity........30-35 percent. 

Wind (20 ft)........Southwest winds 4 to 8 mph afternoon gusts 15 mph. 

CWR.................0 percent. 

Chance of thunder...0 percent. 

Mixing height.......2700 ft AGL. 

Transport winds.....West around 10 mph. 

Marine layer........None. 



.TONIGHT...



Sky/weather.........Mostly clear. 

Min temperature.....49-53. 

Max humidity........80-90 percent. 

Wind (20 ft)........Northwest winds 5 to 10 mph shifting to the 

                    south 4 to 7 mph overnight. 

CWR.................0 percent. 

Chance of thunder...0 percent. 

Mixing height.......500 ft AGL. 

Transport winds.....West around 8 mph. 

Marine layer........None. 



.FRIDAY...



Sky/weather.........Sunny.  Hotter and drier. 

Max temperature.....91-95. 

Min humidity........28-32 percent. 

Wind (20 ft)........Southwest winds 5 to 10 mph gusts 12-15 mph. 

CWR.................0 percent. 

Chance of thunder...0 percent. 

Mixing height.......3700 ft AGL. 

Transport winds.....South around 7 mph. 

Marine layer........None. 



$$

Forecaster...R_WALBRUN

Requested by...BC Sean Lacy

Type of request...PRESCRIBED

.TAG 2516656.0/MTR

.DELDT 06/26/25

.FormatterVersion 2.0.0

.EMAIL seanl@sonomavalleyfire.org

