Red Flag Warning issued October 17 at 9:11AM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

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   17 October 2026 at 16:17 UTC

   Version 2

   7 recorded details changed

   Title

   Before

   Red Flag Warning issued October 16 at 5:42PM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

   After

   Red Flag Warning issued October 17 at 9:11AM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

   Source updated

   Before

   17 October 2026 at 00:42 UTC

   After

   17 October 2026 at 16:11 UTC

   Effective from

   Before

   17 October 2026 at 00:42 UTC

   After

   17 October 2026 at 16:11 UTC

   Forecast onset

   Before

   17 October 2026 at 00:42 UTC

   After

   17 October 2026 at 16:11 UTC

   Message expiry

   Before

   17 October 2026 at 17:00 UTC

   After

   18 October 2026 at 00:15 UTC

   Official description

   Before

   ...HIGH RISK FOR RAPID FIRE GROWTH AND EXTREME FIRE BEHAVIOR WITH ANY NEW FIRE STARTS THROUGH SATURDAY, DUE TO MODERATE TO LOCALLY STRONG SANTA ANA WINDS AND LOW RELATIVE HUMIDITY... Moderate to locally strong Santa Ana winds have peaked today then will slowly weaken tonight through Saturday. The gusty offshore winds combined with very warm and dry conditions will maintain Red Flag Warnings for most of Los Angeles and Ventura Counties through Saturday. * AFFECTED AREA...Santa Clarita Valley, Ventura County Beaches, Ventura County Inland Coast, Lake Casitas, Ojai Valley, Central Ventura County Valleys, Malibu Coast, Calabasas and Agoura Hills, Western San Fernando Valley, Eastern San Fernando Valley, Southeastern Ventura County Valleys and Los Angeles County San Gabriel Valley. * TIMING...Until 8 PM PDT Saturday. * WINDS...Northeast to east 20 to 35 mph with gusts of 40 to 50 mph tonight, lowering to 15 to 30 mph with gusts 30 to 45 mph on Saturday. * RELATIVE HUMIDITY...Minimums of 8 to 15 percent common. Poor overnight recoveries in the foothills and wind prone areas. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior which would threaten life and …

   After

   ...RISK FOR RAPID FIRE GROWTH AND EXTREME FIRE BEHAVIOR WITH ANY NEW FIRE STARTS TODAY, DUE TO GUSTY SANTA ANA WINDS WITH VERY WARM AND DRY CONDITIONS... Offshore winds are not as strong or widespread as the past couple of days, but will still create a risk for new fires to have rapid growth in wind prone areas of LA/Ventura counties due to the very warm and dry conditions. By this afternoon, offshore winds may weaken sufficiently to allow some Red Flag Warning areas to be cancelled early. * AFFECTED AREA...Santa Clarita Valley, Ventura County Beaches, Ventura County Inland Coast, Lake Casitas, Ojai Valley, Central Ventura County Valleys, Malibu Coast, Calabasas and Agoura Hills, Western San Fernando Valley, Eastern San Fernando Valley, Southeastern Ventura County Valleys and Los Angeles County San Gabriel Valley. * TIMING...Until 8 PM PDT this evening. * WINDS...Northeast to east 15 to 25 mph with gusts of 30 to 40 mph, gradually diminishing in the afternoon. Strongest winds in Ventura county and eastern San Gabriel Valley foothills. * RELATIVE HUMIDITY...Minimums of 10 to 20 percent common. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior which would threaten life and …

   External source link

   Before

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.6dd74b08e7853d3dc20c5c7091f2efe9c1981b28.003.1

   After

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.471a752cfb304d358eb27b2608f7c2c48c784049.002.1

   Bulletin issued: 17 October 2026 at 16:11 UTC

   View saved version 2

   Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.

   {
     "id": "nws:31435a3e3fa26c756a972a20",
     "authorityId": "urn:oid:2.49.0.1.840.0.471a752cfb304d358eb27b2608f7c2c48c784049.002.1",
     "sender": "w-nws.webmaster@noaa.gov",
     "references": [
       {
         "identifier": "urn:oid:2.49.0.1.840.0.6dd74b08e7853d3dc20c5c7091f2efe9c1981b28.003.1",
         "sender": "w-nws.webmaster@noaa.gov"
       }
     ],
     "category": "weather",
     "title": "Red Flag Warning issued October 17 at 9:11AM PDT until October 17 at 8:00PM PDT by NWS Los Angeles/Oxnard CA",
     "eventType": "Red Flag Warning",
     "occurredAt": "2026-10-17T16:11:00.000Z",
     "issuedAt": "2026-10-17T16:11:00.000Z",
     "timeBasis": "Bulletin issued",
     "effectiveAt": "2026-10-17T16:11:00.000Z",
     "onsetAt": "2026-10-17T16:11:00.000Z",
     "expiresAt": "2026-10-18T00:15:00.000Z",
     "forecastEndAt": "2026-10-18T03:00:00.000Z",
     "severity": "Severe",
     "urgency": "Expected",
     "certainty": "Likely",
     "messageType": "Update",
     "status": "Source update",
     "place": "Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Los Angeles County San Gabriel Valley",
     "coordinates": null,
     "issuer": "NWS Los Angeles/Oxnard CA",
     "summary": "Red Flag Warning · Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Los Angeles County San Gabriel Valley. Severe; likely; urgency: expected.",
     "description": "...RISK FOR RAPID FIRE GROWTH AND EXTREME FIRE BEHAVIOR WITH ANY\nNEW FIRE STARTS TODAY, DUE TO GUSTY SANTA ANA WINDS WITH VERY WARM\nAND DRY CONDITIONS...\n\nOffshore winds are not as strong or widespread as the past couple\nof days, but will still create a risk for new fires to have rapid\ngrowth in wind prone areas of LA/Ventura counties due to the very\nwarm and dry conditions. By this afternoon, offshore winds may\nweaken sufficiently to allow some Red Flag Warning areas to be\ncancelled early.\n\n* AFFECTED AREA...Santa Clarita Valley, Ventura County Beaches,\nVentura County Inland Coast, Lake Casitas, Ojai Valley,\nCentral Ventura County Valleys, Malibu Coast, Calabasas and\nAgoura Hills, Western San Fernando Valley, Eastern San\nFernando Valley, Southeastern Ventura County Valleys and Los\nAngeles County San Gabriel Valley.\n\n* TIMING...Until 8 PM PDT this evening.\n\n* WINDS...Northeast to east 15 to 25 mph with gusts of 30 to 40\nmph, gradually diminishing in the afternoon. Strongest winds\nin Ventura county and eastern San Gabriel Valley foothills.\n\n* RELATIVE HUMIDITY...Minimums of 10 to 20 percent common.\n\n* IMPACTS...If fire ignition occurs, conditions are favorable\nfor extreme fire behavior which would threaten life and\nproperty.",
     "instruction": "A Red Flag Warning means that critical fire weather conditions\nare either occurring now, or will shortly. Use extreme caution\nwith anything that can spark a wildfire. Residents near wildland\ninterfaces should be prepared to evacuate if a wildfire breaks\nout. See readyforwildfire.org and wildfirerisk.org for\ninformation.",
     "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.471a752cfb304d358eb27b2608f7c2c48c784049.002.1",
     "source": "nws",
     "sourceName": "NOAA NWS"
   }

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