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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1052 AM CST Fri Dec 06 2024

Valid 061700Z - 071200Z

No changes are needed to the current D1 Fire Weather Outlook. See
previous discussion below for more information.

..Thornton.. 12/06/2024

.PREV DISCUSSION... /ISSUED 0111 AM CST Fri Dec 06 2024/

...Synopsis...
Localized elevated fire weather conditions are expected for portions
of the southern CA coast through the day and into the overnight
hours. 06 UTC surface observations show a seasonally strong surface
high over the northern Great Basin (MSLP values between the 75th to
90th percentile for early December). This feature, co*bined with a
weak trough axis along the CA coast, has maintained a persistent
DAG-LAX pressure gradient between -5 to -8 mb over the past 24
hours. Offshore winds are forecast to increase through 18 UTC as the
pressure gradient gradually strengthens before slowly abating
through the remainder of the forecast period. A shallow marine layer
evident in the 00 UTC VBG sounding and coastal surface obs is
expected to mix out as winds strengthen, but the warmest/driest
conditions will likely reside within the thermal layer above 1700 ft
(also evident in the VBG sounding and surface obs). Latest high-res
guidance suggests the offshore pressure gradient will approach
critical thresholds by around 16-18 UTC and may support gusts within
the higher terrain between 20-30 mph as RH values fall into the
teens. As such, pockets of elevated to critical fire weather
conditions are possible through much of the southern CA coastal
terrain - though appear most persistent/widespread between the San
Gabriel and San Rafael Mountains where terrain influences will
locally augment the gradient winds. Elevated fire weather conditions
should beco*e increasingly isolated through late afternoon, but may
persist for some locations through early Saturday morning.

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