####018002341#### FNUS22 KWNS 131916 FWDDY2 Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0115 PM CST Mon Jan 13 2025 Valid 141200Z - 151200Z ...EXTREMELY CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE WESTERN LA BASIN... ...CRITICAL FIRE WEATHER AREA FOR MUCH OF SOUTHERN CA... ...19z Update... Minimal changes were made to the prior outlook. Strong sustained winds of 30-40 mph, with locally damaging wind gusts of 55-75 mph are likely overnight D1/Monday night into D2/Tuesday. Winds should peak through the morning and early afternoon D2/Tuesday across the Santa Ana corridors of Ventura and western LA County, and farther south across southern CA. Very dry surface conditions, with RH values of 8-10% are also expected. The rare combination of extremely low humidity and very strong winds will support extremely critical fire-weather conditions much of D2/Tuesday. Critical fire-weather conditions are also possible across parts of the Santa Ynez mountains and southern Coastal Ranges. Critical fire-weather concerns will likely continue overnight into D3/Wednesday. However, winds should slowly weaken as upper-level support diminishes. See the prior outlook for additional information. ..Lyons.. 01/13/2025 .PREV DISCUSSION... /ISSUED 0243 AM CST Mon Jan 13 2025/ ...Synopsis... Upper ridging will begin to impinge on the West Coast as a positively tilted mid-level trough meanders over the southern Rockies tomorrow (Tuesday). Guidance consensus shows deep-layer offshore flow over the southern California coastline, driven by a strong surface pressure gradient with offshore flow, overspread by a northeasterly 500 mb wind maximum. The deep-layer offshore flow will support widespread 20-40 mph sustained surface winds (with higher gusts) through at least Tuesday morning into early Tuesday afternoon, when RH will dip to at least 10-15 percent. Similar to Day 1 (today), the best chance for Extremely Critical conditions tomorrow/Tuesday will be over the Ventura Valley toward the San Bernardino mountains. Here, high-resolution guidance agreement is greatest in showing particularly dangerous wildfire-spread conditions lasting for several hours. ...Please see www.spc.noaa.gov/fire for graphic product... $$