####018002156#### FNUS21 KWNS 211701 FWDDY1 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1100 AM CST Tue Jan 21 2025 Valid 211700Z - 221200Z ...EXTREMELY CRITICAL FIRE WEATHER AREA FOR THE SAN GABRIEL MOUNTAINS WEST TOWARDS THE MALIBU COAST... ...EXTREMELY CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SAN JACINTO TO LAGUNA MOUNTAIN RANGES... ...CRITICAL FIRE WEATHER AREA FOR MUCH OF SOUTHERN CALIFORNIA... The previous forecast (see below) remains on track, and only minor changes were made to the Extremely Critical highlights in Los Angeles County and Ventura County -- based on the latest surface observations and high-resolution guidance. The offshore pressure gradient should be peaking over the next few hours (latest LAX-DAG gradient around -6.5 mb), and this will be the period of strongest offshore winds and potential for extremely critical conditions. Thereafter, critical conditions should persist into this evening, when an overall decrease in the pressure gradient and surface winds is expected. ..Weinman.. 01/21/2025 .PREV DISCUSSION... /ISSUED 0156 AM CST Tue Jan 21 2025/ ...Synopsis... A mid-level trough across the southwest U.S. will rapidly track eastward toward the Southeast while surface high pressure persists over the Great Basin through the period. Strong offshore flow will persist from the Ventura Valley to the Laguna Mountains, with widespread 20-30 mph sustained winds and 10 percent RH expected during the day into early Wednesday morning, warranting the maintenance of Critical highlights across much of the far southern California shoreline. Furthermore, the latest high-resolution guidance consensus shows sustained winds exceeding 40 mph, coinciding with single-digit RH, from the Ventura Valley to the San Bernardino Mountains, as well as the San Jacinto to Laguna Mountain ranges, where Extremely Critical highlights were maintained. The best chance for Extremely Critical conditions will be during the morning into early afternoon hours. ...Please see www.spc.noaa.gov/fire for graphic product... $$