####018002266#### FNUS21 KWNS 141645 FWDDY1 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1044 AM CST Tue Jan 14 2025 Valid 141700Z - 151200Z ...EXTREMELY CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE WESTERN LA BASIN... ...CRITICAL FIRE WEATHER AREA FOR MUCH OF SOUTHERN CA... ...17z Update... Morning obs show offshore flow has been slow to develop across western Ventura and LA Counties. Stronger gusts of 50-60 mph were noted in the western San Gabriel mountains, and should become more common across the higher terrain through the afternoon. As mechanical mixing increases with diurnal heating, stronger winds should also develop across much of southern CA. Sustained 20-30 mph winds with RH below 20% is expected across the Ventura Plain and interior Valleys this afternoon, as upper-level winds become aligned with offshore gradients. This should promote several hours of high-end critical to localized extremely critical conditions through terrain-favored corridors. Critical fire concern should continue overnight as winds strengthen again into early D2/Wed morning. The prior outlook area is unchanged, see the previous discussion for more info. ..Lyons.. 01/14/2025 .PREV DISCUSSION... /ISSUED 0152 AM CST Tue Jan 14 2025/ ...Synopsis... A belt of stronger northeasterly mid-level flow will overspread southern California as a 500 mb cut-off low attempts to drift southwest from the coastline today. A localized tightening of the surface pressure gradient is likely during the morning hours, encouraging very strong, dry offshore flow from the Ventura Valley to the Laguna Mountains. Widespread 20-30 mph sustained offshore winds are likely (perhaps with gusts exceeding 50 mph at times) for much of the period, warranting the maintenance of Critical highlights. Similar to yesterday, the best chance for sustained 30-40 mph winds amid 10 percent RH will be from around the Ventura Valley to the San Bernardino Mountains. Here, Extremely Critical highlights remain given the potential for very dangerous wildfire-spread conditions and the potential for extreme fire behavior. ...Please see www.spc.noaa.gov/fire for graphic product... $$