iNWS Alert

...RED FLAG WARNING IN EFFECT UNTIL 6 PM TODAY ACROSS PORTIONS OF LOS ANGELES AND VENTURA COUNTIES DUE TO GUSTY SANTA ANA WINDS AND LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT 4 PM TUESDAY UNTIL 4 AM WEDNESDAY FOR MOUNTAINS AND FOOTHILLS OF SAN LUIS OBISPO AND SANTA BARBARA COUNTIES AND SANTA BARBARA SOUTH COAST... ...RED FLAG WARNING IN EFFECT 4 AM WEDNESDAY UNTIL 6 PM THURSDAY FOR MUCH OF LOS ANGELES AND VENTURA COUNTIES DUE TO STRONG SANTA ANA WINDS AND LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT 7 AM WEDNESDAY UNTIL NOON THURSDAY FOR INLAND LA COAST (ESPECIALLY HOLLYWOOD HILLS), OJAI/LAKE CASITAS, AND CHANNEL ISLANDS/CATALINA ISLAND... .For today, Santa Ana winds will gradually diminish through the afternoon and evening hours. The combination of lingering gusty offshore winds and humidity readings in the 10 to 20 percent range will result in critical fire weather conditions through the afternoon hours in portions of Los Angeles and Ventura counties. There is increased confidence of a stronger, more widespread, and longer duration Santa Ana wind event which will likely bring widespread critical fire weather conditions to many wind prone areas of Los Angeles and Ventura counties Wednesday into Thursday. This will be a high end Red Flag Warning event with the combination of strong upper level wind support, tightening offshore pressure gradients (LAX- Daggett peaking at -6 to - 8 mb), and moderate cold air advection. The strongest winds with this upcoming Santa Ana wind event are expected to be Wednesday morning into Wednesday night when widespread damaging wind gusts of 60 to 80 mph are likely in the mountains and foothills of Los Angeles and Ventura counties (including the Santa Monicas and Santa Susanas), with isolated gusts of 80 to 100 mph possible in favored areas of the San Gabriels. For wind prone coastal and valley areas of Los Angeles and Ventura counties, damaging gusts of 50 to 70 mph will be likely (including the Malibu coast and Ventura county coastal plain). Due to the strong upper level wind support, typical wind sheltered areas such as portions of the LA basin (mainly Hollywood Hills), Lake Casitas and Ojai, as well as the Channel Islands and Catalina Island are expected to see gusty north to northeast winds with associated Red Flag fire weather concerns. Humidity levels are also expected to lower to between 8 to 15 percent by Wednesday afternoon with these low humidities likely to linger into Thursday. In addition, there will be gusty north to northeast winds overlapping with humidities around 15 to 20 percent late Tuesday afternoon into Tuesday night across the mountains and foothills of San Luis Obispo and Santa Barbara counties, as well as the Santa Ynez mountains, Santa Barbara south coast, and Highway 33 corridor. These areas are now under a Red Flag Warning for late Tuesday into Tuesday night, with gusts of 35 to 55 mph being common, except isolated gusts up to 60 mph. This is a dangerous fire weather event. Any new fires in the Red Flag Warning area will have rapid fire spread, extreme fire behavior, and long range spotting.

CAZ287-356-357-368-549-550-060200-
/O.NEW.KLOX.FW.W.0011.241106T1500Z-241107T2000Z/
Catalina and Santa Barbara Islands-Lake Casitas-Ojai Valley-
Los Angeles County Inland Coast including Downtown Los Angeles-
San Miguel and Santa Rosa Islands-Santa Cruz and Anacapa Islands-
334 PM PST Mon Nov 4 2024

...RED FLAG WARNING IN EFFECT FROM 7 AM WEDNESDAY TO NOON PST
THURSDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR
THE LOS ANGELES INLAND COAST INCLUDING THE HOLLYWOOD HILLS, LAKE
CASITAS, OJAI, CATALINA ISLAND, AND CHANNEL ISLANDS...

The National Weather Service in Los Angeles/Oxnard has issued a
Red Flag Warning for gusty northeast winds and low relative
humidity, which is in effect from 7 AM Wednesday to noon PST
Thursday.

* WINDS...Northeast 15 to 30 mph with gusts 35 to 50 mph.
Strongest across higher terrain.

* RELATIVE HUMIDITY...Lowering to 8 to 15 percent by Wednesday
afternoon and lingering into Thursday.

* IMPACTS...If fire ignition occurs, conditions are favorable
for rapid fire spread and extreme fire behavior which would
threaten life and property.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. See readyforwildfire.org and wildfirerisk.org for
information.

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