894
FNUS22 KWNS 190742
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0142 AM CST Sun Jan 19 2025

Valid 201200Z - 211200Z

...EXTREMELY CRITICAL FIRE WEATHER AREA FOR THE SAN GABRIEL
MOUNTAINS WEST TOWARDS THE SANTA MONICA MOUNTAINS AND SANTA SUSANA
MOUNTAINS OF SOUTHERN CALIFORNIA...
...CRITICAL FIRE WEATHER AREA FOR MUCH OF THE TRANSVERSE AND
PENINSULAR MOUNTAIN RANGES OF SOUTHERN CALIFORNIA...

...Synopsis...
A positively tilted shortwave trough is forecast to move southward
out of the Pacific Northwest and into Southern California late
Sunday night into early Tuesday Morning. By Monday afternoon, strong
mid-level northerly flow will reach Southern California, with an
amplified mid-level ridge following behind the trough and moving
east out of the Eastern Pacific. These upper-level features, in
combination with strengthening surface high pressure over the
Intermountain West, will result in a tight surface pressure gradient
directed offshore. The pressure gradient magnitudes suggest strong
Santa Ana winds developing as a result, lasting from Monday night
through Tuesday morning.

Recent high-resolution forecast guidance has increased the
confidence in strong surface pressure gradients and strong surface
winds enough to introduce an Extremely Critical area, extending from
the San Gabriel Mountains westward to the Santa Monica Mountains and
Santa Susana Mountains. Forecasts continue to show strong surface
pressure gradients from LAX->DAG anywhere from -8 mb to -11 mb,
resulting in sustained surface winds of 35-40 MPH (gusting 60-80
MPH). These dry and windy conditions, coupled with dry and receptive
fuels, will result Extremely Critical conditions supportive of rapid
wildfire onset and spread.

Critical fire-weather highlights extend into San Diego county, where
recent model guidance continues to increase confidence in strong
offshore flow and dry conditions overnight Monday into Tuesday
morning.

..Halbert.. 01/19/2025

...Please see www.spc.noaa.gov/fire for graphic product...

$$