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1/9/2025

WT Staff

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January 9, 2025 updated 1123 am PST

Wildfires pushed by Santa Ana winds and low humidity

Urgent Fire Weather Message issued by NWS Los Angeles 1027 am Thurs Jan 9
HIGH END RED FLAG WARNINGS IN EFFECT FOR MUCH OF LOS ANGELES AND VENTURA COUNTIES THROUGH 6 PM FRIDAY DUE TO MODERATE TO STRONG SANTA ANA WINDS AND LOW HUMIDITIES...

Critical Red Flag fire weather conditions will continue across much of Los Angeles and Ventura counties through Friday due to gusty Santa Ana winds and low humidities. While winds had diminished some last night, they are increasing and becoming more widespread today and will continue into Friday morning. The strongest winds today into Friday morning will be across the mountains (including the Santa Susanas and Santa Monicas) and Santa Clarita Valley, where damaging wind gusts up to 65 mph can be expected, except isolated gusts to 75 mph in the San Gabriels, western Santa Monicas, and Santa Susana mountains. The gusty Santa Ana winds will also overspread many of the typical wind prone coasts and valley areas in LA/Ventura counties during this time, with gusts in the 35 to 55 mph range. With the enhance upper level wind support today into this evening, there will be some breezy conditions across portions of the LA Basin, especially the west side of the LA coast. Humidity values between 7 and 15 percent will be common today into Friday across the Red Flag Warning area, with poor overnight recoveries under 20 percent in windy areas tonight. THE INCREASED SANTA ANA WINDS TODAY INTO FRIDAY MORNING WILL BRING HIGH END RED FLAG CONDITIONS TO THE WIND PRONE MOUNTAINS AND VALLEYS OF LOS ANGELES AND VENTURA COUNTIES, AS WELL AS THE MALIBU COAST. The offshore winds are expected to diminish on Friday afternoon, with the potential for an onshore wind shift across many of the coastal areas.

WITH THE ENHANCED SANTA ANA WINDS TODAY THROUGH FRIDAY MORNING, THERE WILL BE THE INCREASED RISK OF RAPID FIRE SPREAD AND EXTREME FIRE BEHAVIOR, INCLUDING LONG RANGE SPOTTING, ON EXISTING FIRES AS WELL AS ANY NEW FIRES.

There is the potential for a moderate to strong Santa Ana wind event Monday into Tuesday.

RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOS ANGELES COUNTY INLAND COAST INCLUDING DOWNTOWN LOS ANGELES...

North to northeast winds 15 to 25 mph with gusts to 35 mph, except 20 to 30 mph with gusts to 45 mph in the Hollywood Hills. Winds diminishing Friday afternoon. Relative humidity 7 to 15 percent today and Friday. Poor overnight recoveries tonight.

If fire ignition occurs, conditions are favorable for very rapid fire spread and extreme fire behavior, including long range spotting, which would threaten life and trees and powerlines, as well as widespread power outages.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. For more information, see readyforwildfire.org, here.
See wildfirerisk.org, here.

Safe Drinking Water Act
On January 8th, the California wildfires forced evacuation orders and warnings to expand in Santa Monica, and forced officials in parts of Malibu to issue a Boil Water Advisory.

Pacific Palisades: Boil water and water conservation advisory issued by the Los Angeles Department of Water and Power due to quality issues stemming from the massive Palisades Fire. Affects 90272 zip code encompassing the Pacific Palisades area.









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