Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1147 AM CDT Tue Oct 28 2025

Valid 281700Z - 291200Z

...Southern California...
Elevated to locally critical fire weather threat will continue for
portions of southern CA through today. Current surface observations
show accelerating east-northeast winds in response to an amplifying
offshore pressure gradient with a 1036 mb surface high pressure
situated over the Northern Rockies. Rapid drying over the last 12
hours has resulted in relative humidity falling below 15% in some
locations, collocated with east-northeast winds of 15-25 mph, with
gusts of 35-45 mph. Elevated highlights were removed for southern
Sierra Nevada as less robust winds and slightly higher relative
humidity will limit a broader fire weather threat. Poor relative
humidity recoveries heading into tonight are expected as well with
the continued offshore flow, particularly where winds remain
elevated along adjacent mountain ranges of the L.A. Basin.

..Williams.. 10/28/2025

.PREV DISCUSSION... /ISSUED 1237 AM CDT Tue Oct 28 2025/

...Synopsis...
An upper-level trough will intensify as it digs into the lower
Mississippi Valley. In the West, an upper ridge will move into the
Great Basin. At the surface, an expansive surface high will shift
eastward with time. Breezy conditions will exists behind a cold
front surging through the southern Plains.

...Southern California...
Fire weather concerns will be focused across the typical wind-prone
areas of LA/Ventura Counties and vicinity. The offshore gradient
will be strongest during the morning and very gradually taper off in
intensity into Wednesday. Winds of 15-25 mph appear possible along
with RH in the 15-20% range. Local fuel information has suggested
that fuels will support fire spread. Elevated to possibly brief and
localized critical fire weather can be expected.

...Southern High Plains...
Dry and breezy northerly winds will persist across the region behind
the cold front. Given the current state of fuels, sustained fire
weather concerns are not expected, but locally elevated concerns
could develop.

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