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298 WWUS86 KLOX 051718 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 918 AM PST Tue Nov 5 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING FORTHCOMING FOR PORTIONS OF LOS ANGELES AND VENTURA COUNTIES / DETAILS TO FOLLOW BY 11 AM PST... ...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... 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. CAZ369-370-375-377>380-080200- /O.CON.KLOX.FW.W.0011.241106T1200Z-241108T0200Z/ Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Santa Susana Mountains-Northern Ventura County Mountains- Interstate 5 Corridor- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 918 AM PST Tue Nov 5 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING FORTHCOMING FOR PORTIONS OF LOS ANGELES AND VENTURA COUNTIES / DETAILS TO FOLLOW BY 11 AM PST... ...RED FLAG WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO 6 PM PST THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE SANTA MONICA AND SANTA SUSANA MOUNTAINS, THE MOUNTAINS OF LOS ANGELES COUNTY.... * WINDS...Offshore winds will continue to diminish this afternoon into tonight. Northeast winds will increase to 35 to 50 mph with damaging gusts of 60 to 80 mph Wednesday into Wednesday night. Offshore Winds are expected to be 5 to 10 mph weaker on Thursday. * RELATIVE HUMIDITY...10 to 20 percent today. Humidity levels will likely fall to between 8 and 15 percent by Wednesday afternoon, and linger into Thursday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. With the threat of even stronger Santa Ana winds and drier fuels with the Wednesday/Thursday Santa Ana event, there will be an increased risk for long range spotting. 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. && $$ CAZ288-354-355-358-362-371>374-381-382-548-080200- /O.CON.KLOX.FW.W.0011.241106T1200Z-241108T0200Z/ Santa Clarita Valley-Ventura County Beaches- Ventura County Inland Coast-Central Ventura County Valleys- Malibu Coast-Calabasas and Agoura Hills- Western San Fernando Valley-Eastern San Fernando Valley- Southeastern Ventura County Valleys- Western Antelope Valley Foothills- Eastern Antelope Valley Foothills- Los Angeles County San Gabriel Valley- 918 AM PST Tue Nov 5 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING FORTHCOMING FOR PORTIONS OF LOS ANGELES AND VENTURA COUNTIES / DETAILS TO FOLLOW BY 11 AM PST... ...RED FLAG WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO 6 PM PST THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR THE SANTA CLARITA VALLEY, CALABASAS, SAN FERNANDO VALLEY, VENTURA COUNTY VALLEYS AND COAST, AND ANTELOPE VALLEY FOOTHILLS...... * WINDS...Offshore winds will continue to diminish this afternoon into tonight. Northeast winds will increase to 30 to 45 mph with damaging gusts of 50 to 70 mph Wednesday into Wednesday night. Strongest winds expected along the Highway 118/210 corridors in eastern Ventura county valleys to western San Fernando valley, with highest risk for Simi Valley, Moorpark, Porter Ranch, and San Fernando. Offshore winds are expected to be 5 to 10 mph weaker on Thursday. * RELATIVE HUMIDITY...10 to 20 percent today. Humidity levels will likely fall to between 8 and 15 percent by Wednesday afternoon, and linger into Thursday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. With the threat of even stronger Santa Ana winds and drier fuels with the Wednesday/Thursday Santa Ana event, there will be an increased risk for long range spotting. 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. && $$ CAZ342-345-349>353-061200- /O.CON.KLOX.FW.W.0011.241106T0000Z-241106T1200Z/ Santa Lucia Mountains-San Luis Obispo County Mountains- Santa Barbara County Southwestern Coast- Santa Barbara County Southeastern Coast- Santa Ynez Mountains Western Range- Santa Ynez Mountains Eastern Range- Santa Barbara County Interior Mountains- 918 AM PST Tue Nov 5 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM PST WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS OF SANTA BARBARA AND SAN LUIS OBISPO COUNTIES... * WINDS...North to northeast 20 to 40 mph with gusts 40 to 55 mph. Isolated gusts to 60 mph across favored ridgetops. * RELATIVE HUMIDITY...15 to 20 percent. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. With the threat of even stronger Santa Ana winds and drier fuels with the Wednesday/Thursday Santa Ana event, there will be an increased risk for long range spotting. 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. && $$ CAZ287-356-357-368-549-550-072000- /O.CON.KLOX.FW.W.0011.241106T1500Z-241107T2000Z/ Catalina and Santa Barbara Islands-Lake Casitas-Ojai Valley- Los Angeles County Inland Coast including Downtown Los Angeles- San Miguel and Santa Rosa Islands-Santa Cruz and Anacapa Islands- 918 AM PST Tue Nov 5 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING FORTHCOMING FOR PORTIONS OF LOS ANGELES AND VENTURA COUNTIES / DETAILS TO FOLLOW BY 11 AM PST... ...RED FLAG WARNING REMAINS IN EFFECT FROM 7 AM WEDNESDAY TO NOON PST THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOS ANGELES INLAND COAST INCLUDING THE HOLLYWOOD HILLS, LAKE CASITAS, OJAI, CATALINA ISLAND, AND CHANNEL ISLANDS... * WINDS...Northeast 15 to 30 mph with gusts 35 to 50 mph. Strongest across higher terrain. * RELATIVE HUMIDITY...Lowering to 8 to 15 percent by Wednesday afternoon and lingering into Thursday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ376-080200- /O.CON.KLOX.FW.W.0011.241106T0000Z-241108T0200Z/ Southern Ventura County Mountains- 918 AM PST Tue Nov 5 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING FORTHCOMING FOR PORTIONS OF LOS ANGELES AND VENTURA COUNTIES / DETAILS TO FOLLOW BY 11 AM PST... ...RED FLAG WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 6 PM PST THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN VENTURA COUNTY MOUNTAINS... * WINDS...Offshore winds will continue to diminish this afternoon into tonight. Northeast winds will increase to 30 to 45 mph with damaging gusts of 50 to 70 mph Wednesday into Wednesday night. Offshore winds are expected to be 5 to 10 mph weaker on Thursday. * RELATIVE HUMIDITY...12 to 20 percent today. Humidity levels will likely fall to between 8 and 15 percent by Wednesday afternoon, and linger into Thursday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. With the threat of even stronger Santa Ana winds and drier fuels with the Wednesday/Thursday Santa Ana event, there will be an increased risk for long range spotting. 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. && $$ Cohen