####018000397#### FNUS38 KWNS 132144 PFWF38 DAY 3-8 FIRE WEATHER OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 0342 PM CST MON JAN 13 2025 VALID TIME 151200Z - 211200Z FIRE WEATHER OUTLOOK POINTS DAY 3-8 ... CRITICAL FIRE WEATHER AREA ... D3 34451981 34591990 34751964 34781856 34551811 34351763 34181772 34181847 34051859 34061920 34381950 34451981 && ####018002233#### FNUS28 KWNS 132144 FWDD38 Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0342 PM CST Mon Jan 13 2025 Valid 151200Z - 211200Z Widespread and high-end critical fire-weather concerns are expected to persist through midweek this week over portions of southern CA. A strong upper low and easterly mid-level flow are forecast to develop off the Pacific Coast. As the upper low cuts off, mid-level flow will align with strong offshore pressure gradients over the western LA Basin and mountains through D4/Thur. Winds will then slowly weaken through the remainder of the week. High pressure redevelops this weekend and additional fire-weather concerns are possible. ...Southern CA... Strong offshore winds are expected to be ongoing at the start of the forecast period D3/Wed morning. Sustained 25-40 mph with gusts of 45-70 mph and single digit RH will likely support extreme fire danger across portions of the western LA Basin and Transverse ranges through noon. Critical fire-weather conditions will likely continue into D3/Wed afternoon with strong winds and low RH. Offshore gradients will gradually weaken into the evening as the upper low shifts southeastward. Upper-level flow is also forecast to slowly weaken into early D4/Thursday. The winds aloft are forecast to become more southeasterly as they weaken. This shift should favor less alignment with typical Santa Ana corridors in the LA Basin. Still, elevated to critical conditions will likely persist across the Santa Monica and Santa Ynez Mountains through D4/Thurs before winds weaken below 25 mph. Fire-weather concerns will lessen through the remainder of the work week as onshore flow returns on the backside of the upper low. However, high pressure over the Great Basin is forecast to strengthen again this weekend and into week 2, as an arctic air mass intrudes the lower 48. This could support another prolonged period of offshore flow and heightened fire-weather concerns. However, confidence in the strength of any offshore winds later in the period is low. ..Lyons.. 01/13/2025 ...Please see www.spc.noaa.gov/fire for graphic product... $$