SPC Day 1 Fire Weather Outlook
[html]SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1016 AM CST Mon Nov 04 2024
Valid 041700Z - 051200Z
The previous forecast remains on track. Current surface observations
show strong offshore flow over terrain-favoring areas of southern
California, with sustained winds exceeding 20 mph, with higher gusts
noted. Current observed surface RH values are in the 15-20 percent
range, and these may lower further through afternoon with daytime
heating. As such, Elevated highlights have been maintained over
portions of southern California.
..Squitieri.. 11/04/2024
.PREV DISCUSSION... /ISSUED 0150 AM CST Mon Nov 04 2024/
...Synopsis...
An amplified mid/upper-level ridge centered over the Northwest will
reinforce a surface anticyclone over the northern Great Basin
through the afternoon, before the ridge deamplifies into the evening
hours. As a result, a tight offshore pressure gradient will yield
strong/gusty northeasterly surface winds across portions of southern
California into the afternoon. The pressure gradient will peak early
in the forecast period, when gusts upwards of 50-60 mph are expected
across the wind-prone mountains and valleys of Ventura, Los Angeles,
San Bernardino, and Riverside Counties. Aided by downslope-enhanced
warming/drying, these strong/gusty winds will overlap areas of 15-25
percent RH, favoring elevated to locally critical fire-weather
conditions.
Farther east, strong deep-layer westerly flow rounding the base of a
highly amplified large-scale trough over the Rockies will overspread
the Texas Trans-Pecos region during the day. This will promote
strong westerly surface winds amid 20-25 percent RH. While locally
elevated fire-weather conditions are possible where fuels are dry,
the overall risk appears too localized for highlights.
...Please see www.spc.noaa.gov/fire for graphic product...
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Source: SPC Day 1 Fire Weather Outlook (http://ht**://www.spc.noaa.gov/products/fire_wx/fwdy1.html)