Weather Alerts for Los Angeles CountyIssued by the National Weather Service |
FREEZE WARNING | ||
LOS ANGELES COUNTY | ||
Areas Affected: Antelope Valley |
||
Effective: Tue, 1/21 10:43pm | Updated: Wed, 1/22 12:30am | Urgency: Expected |
Expires: Wed, 1/22 9:00am | Severity: Moderate | Certainty: Likely |
Details:
* WHAT...Very cold temperatures between 15 and 20 degrees expected tonight through Wednesday morning. * WHERE...Antelope Valley. * WHEN...Until 9 AM PST Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Information: Take steps now to protect tender plants from the cold. |
RED FLAG WARNING | ||
LOS ANGELES COUNTY | ||
Areas Affected: Western Santa Monica Mountains Recreational Area - Eastern Santa Monica Mountains Recreational Area - Santa Susana Mountains - Southern Ventura County Mountains - Northern Ventura County Mountains - Interstate 5 Corridor - Western San Gabriel Mountains and Highway 14 Corridor - Eastern San Gabriel Mountains |
||
Effective: Tue, 1/21 2:35pm | Updated: Wed, 1/22 12:30am | Urgency: Expected |
Expires: Wed, 1/22 10:30am | Severity: Severe | Certainty: Likely |
Details:
...RED FLAG WARNING IN EFFECT THROUGH THURSDAY 8 PM PST FOR MOST OF LOS ANGELES AND VENTURA COUNTIES FOR EXTREMELY LOW RELATIVE HUMIDITY AND PERIODS OF GUSTY OFFSHORE WINDS... .The Particularly Dangerous Situation (PDS) Red Flag Warning has ended, but dangerous fire weather conditions will persist through Thursday or Friday. Northeast winds will weaken and shrink in coverage tonight into Wednesday, but will remain locally gusty in the favored hills and mountains. Winds will strengthen and expand once again Wednesday afternoon through Thursday morning, then lower and shrink in coverage again Thursday Night into Friday. Meanwhile, extremely low humidities will persist with minimums under 10 percent over much of the area and poor overnight recoveries. While many areas will see a lull in the winds tonight into Wednesday, the extremely dry conditions will persist and winds will increase again later Wednesday. As result, the Red Flag Warning has been extended over most of Los Angeles and Ventura Counties through 8pm Thursday. Some of the windiest areas may need to be extended into Friday as well. The National Weather Service in Los Angeles/Oxnard has cancelled the Fire Weather Watch, and replaced it with this Red Flag Warning. * WINDS...Northeast 15 to 25 mph with gusts to 40 mph will increase to 20 to 30 mph with gusts to 50 mph by Wednesday afternoon and continue through Thursday. Isolated gusts of 50 to 65 mph in the favored locations. * RELATIVE HUMIDITY...Daily minimums of 2 to 10 percent common with very poor to minimal overnight recoveries. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior and rapid fire growth, which would threaten life and property. * ADDITIONAL DETAILS...Lingering winds and very dry conditions may require an extension of this Red Flag Warning into Friday. Information: 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. |
RED FLAG WARNING | ||
LOS ANGELES COUNTY | ||
Areas Affected: 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 |
||
Effective: Tue, 1/21 2:35pm | Updated: Wed, 1/22 12:30am | Urgency: Expected |
Expires: Wed, 1/22 10:30am | Severity: Severe | Certainty: Likely |
Details:
...RED FLAG WARNING IN EFFECT THROUGH THURSDAY 8 PM PST FOR MOST OF LOS ANGELES AND VENTURA COUNTIES FOR EXTREMELY LOW RELATIVE HUMIDITY AND PERIODS OF GUSTY OFFSHORE WINDS... .The Particularly Dangerous Situation (PDS) Red Flag Warning has ended, but dangerous fire weather conditions will persist through Thursday or Friday. Northeast winds will weaken and shrink in coverage tonight into Wednesday, but will remain locally gusty in the favored hills and mountains. Winds will strengthen and expand once again Wednesday afternoon through Thursday morning, then lower and shrink in coverage again Thursday Night into Friday. Meanwhile, extremely low humidities will persist with minimums under 10 percent over much of the area and poor overnight recoveries. While many areas will see a lull in the winds tonight into Wednesday, the extremely dry conditions will persist and winds will increase again later Wednesday. As result, the Red Flag Warning has been extended over most of Los Angeles and Ventura Counties through 8pm Thursday. Some of the windiest areas may need to be extended into Friday as well. The National Weather Service in Los Angeles/Oxnard has cancelled the Fire Weather Watch, and replaced it with this Red Flag Warning. * WINDS...Northeast will peak at 20 to 30 mph with gusts to 50 mph Wednesday afternoon through Thursday, after a lull later tonight into Wednesday. * RELATIVE HUMIDITY...Daily minimums of 2 to 10 percent common with very poor to minimal overnight recoveries. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior and rapid fire growth, which would threaten life and property. Information: 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. |
WIND ADVISORY | ||
LOS ANGELES COUNTY | ||
Areas Affected: Santa Susana Mountains - Western San Gabriel Mountains and Highway 14 Corridor |
||
Effective: Tue, 1/21 10:43pm | Updated: Wed, 1/22 12:30am | Urgency: Expected |
Expires: Wed, 1/22 10:45am | Severity: Moderate | Certainty: Likely |
Details:
* WHAT...For the Wind Advisory, northeast winds 15 to 30 mph with gusts up to 45 mph. For the High Wind Watch, northeast winds 35 to 50 mph with gusts up to 65 mph possible. * WHERE...Santa Susana Mountains and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...For the Wind Advisory, until 6 PM PST Wednesday. For the High Wind Watch, from Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Information: Monitor the latest forecasts and warnings for updates. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. |
HIGH WIND WATCH | ||
LOS ANGELES COUNTY | ||
Areas Affected: Santa Clarita Valley - Western Santa Monica Mountains Recreational Area |
||
Effective: Tue, 1/21 10:43pm | Updated: Wed, 1/22 12:30am | Urgency: Future |
Expires: Wed, 1/22 10:45am | Severity: Severe | Certainty: Possible |
Details:
* WHAT...Northeast winds 35 to 50 mph with gusts up to 65 mph possible. * WHERE...Santa Clarita Valley and Western Santa Monica Mountains Recreational Area. * WHEN...From late Wednesday night through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Information: Monitor the latest forecasts and warnings for updates. |
HIGH WIND WATCH | ||
LOS ANGELES COUNTY | ||
Areas Affected: Santa Susana Mountains - Western San Gabriel Mountains and Highway 14 Corridor |
||
Effective: Tue, 1/21 10:43pm | Updated: Wed, 1/22 12:30am | Urgency: Future |
Expires: Wed, 1/22 10:45am | Severity: Severe | Certainty: Possible |
Details:
* WHAT...For the Wind Advisory, northeast winds 15 to 30 mph with gusts up to 45 mph. For the High Wind Watch, northeast winds 35 to 50 mph with gusts up to 65 mph possible. * WHERE...Santa Susana Mountains and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...For the Wind Advisory, until 6 PM PST Wednesday. For the High Wind Watch, from Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Information: Monitor the latest forecasts and warnings for updates. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. |
HIGH WIND WATCH | ||
LOS ANGELES COUNTY | ||
Areas Affected: Southern Ventura County Mountains - Interstate 5 Corridor - Eastern San Gabriel Mountains |
||
Effective: Tue, 1/21 10:43pm | Updated: Wed, 1/22 12:30am | Urgency: Future |
Expires: Wed, 1/22 10:45am | Severity: Severe | Certainty: Possible |
Details:
* WHAT...Northeast winds 35 to 50 mph with gusts up to 65 mph possible. * WHERE...Eastern San Gabriel Mountains, Interstate 5 Corridor, and Southern Ventura County Mountains. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could b0e difficult, especially for high profile vehicles. Information: Monitor the latest forecasts and warnings for updates. |