ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 151649
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1049 AM CST Wed Jan 15 2025
Valid 151700Z - 161200Z
...CRITICAL FIRE WEATHER AREA FOR PARTS OF SOUTHERN CA...
...17z Update...
No changes were made to the valid outlook. Offshore winds are
expected to increase this afternoon with gusts of 25-40 mph
possible. The strong winds and minimum humidity near 10% will
support critical fire-weather conditions over western portions of
the LA Basin and in the higher terrain of southern CA. Fire concerns
should slowly diminish this evening. See the prior outlook for more
info.
..Lyons.. 01/15/2025
.PREV DISCUSSION... /ISSUED 0139 AM CST Wed Jan 15 2025/
...Synopsis...
Mid-level easterly flow will overspread southern California with the
approach of a 500 mb cutoff low today, providing enough upper
support, in tandem with a persisting surface pressure gradient, to
promote continued dry offshore flow. By afternoon, sustained winds
may exceed 20 mph (with higher gusts) over several locales, from the
Ventura Valley to the Laguna Mountains. RH may dip to 10-20 percent
with the stronger wind speeds, necessitating continued Critical
highlights.
...Please see www.spc.noaa.gov/fire for graphic product...
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 151911
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0111 PM CST Wed Jan 15 2025
Valid 161200Z - 171200Z
...19z Update...
Offshore winds should gradually weaken D2/Thursday morning as
onshore flow returns by the afternoon/evening. Lingering strong
gusts are possible in the terrain favored areas of the western LA
Basin. However, with weakening winds and rising humidity, fire
concerns are expected to be much lower than the last several days.
See the prior outlook for info.
..Lyons.. 01/15/2025
.PREV DISCUSSION... /ISSUED 0147 AM CST Wed Jan 15 2025/
...Synopsis...
The surface high pressure gradient should begin to relax, with
offshore flow gradually diminishing as the mid-level cutoff low
morphs into an open wave and overspreads the Baja Peninsula tomorrow
(Thursday). Before the pressure gradient weakens though, at least a
few more hours of dry and breezy offshore flow will persist in
terrain-favoring areas surrounding the Los Angeles metropolitan
area, with Elevated highlights introduced.
...Please see www.spc.noaa.gov/fire for graphic product...
