ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 131655

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   1055 AM CST Mon Jan 13 2025

   Valid 131700Z - 141200Z

   ...EXTREMELY CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE WESTERN
   LA BASIN AND TRANSVERSE RANGES....
   ...CRITICAL FIRE WEATHER AREA FOR MUCH OF SOUTHERN CA...

   ...17z Update...
   Early morning observations show strengthening northeasterly offshore
   winds are developing across the higher terrain and interior valleys
   of Ventura and LA Counties, as an upper-level shortwave trough moves
   south along the coast. Recent gusts at OXR and CMA to 40-50 mph,
   should become more widespread as offshore pressure gradients
   strengthen across portions of western LA County and the western
   Santa Monica Mountains through midday. Coincident with critically
   low RH to 10-15%, several hours of high-end critical to extremely
   critical fire-weather conditions are expected.

   Winds should weaken slightly this afternoon and evening, as the
   shortwave trough moves southwest before deepening into an upper low.
   Offshore pressure gradients will quickly strengthen once again,
   after sunset tonight, as the upper low strengthens and a mid-level
   jet max of 30-50 kt approaches from the northeast. Offshore
   gradients of -10 to -14 mb (LAX-TPH) will support 30-40 mph
   sustained winds with locally damaging gusts to 55-75 mph through
   western LA and Ventura County Santa Ana corridors. The strongest
   winds are expected late tonight into early D2/Tuesday, as the
   maximum in upper-level support aligns with the strongest offshore
   gradients. Very low RH, below 10%, and the strong wind gusts will
   support widespread critical and extremely critical fire-weather
   conditions conducive to extreme spread rates and fire behavior with
   any ignitions.

   ..Lyons.. 01/13/2025

   .PREV DISCUSSION... /ISSUED 0229 AM CST Mon Jan 13 2025/

   ...Synopsis...
   A mid-level impulse embedded in broader cyclonic flow aloft is
   poised to morph into a cut-off low off of the southern California
   shoreline today. Surface high pressure will remain in place over the
   Great Basin, fortifying a pressure gradient over southern California
   through the period. During the first few hours of the period, and
   during the later half of the day into early Tuesday morning, some
   strengthening of the surface pressure gradient is likely. 

   For much of the day into early Tuesday morning, widespread sustained
   offshore winds over 20 mph are likely, with terrain-favoring areas
   experiencing 30-40 mph winds (perhaps with higher gusts) at times.
   RH is also expected to dip to 10 percent in spots during peak winds.
   As such, widespread Critical conditions are likely from the Ventura
   Valley toward the Laguna Mountains. Extremely Critical conditions
   may develop in the Ventura Valley to the San Bernardino Mountains.
   Here, high-resolution guidance members show the greatest agreement
   in longer-lasting, intense surface winds (perhaps exceeding 50 mph)
   that are capable of supporting extreme fire behavior, as well as the
   very rapid spread of any new wildfires that may develop.

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

   CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)