Advarsler

High Wind Warning issued January 5 at 12:30PM PST until January 8 at 6:00PM PST by NWS Los Angeles/Oxnard CA* WHAT...North to northeast winds 30 to 45 mph with gusts between 60and 80 mph expected.* WHERE...Eastern San Fernando Valley, Eastern Santa MonicaMountains Recreational Area, Interstate 5 Corridor, Los AngelesCounty San Gabriel Valley, Santa Clarita Valley, and Western SanFernando Valley.* WHEN...From 10 AM Tuesday to 6 PM PST Wednesday.* IMPACTS...Damaging winds could blow down trees and power lines.Widespread power outages are possible. Travel will be difficult,especially for high profile vehicles.Remain in the lower levels of your home during the windstorm, andavoid windows. Watch for falling debris and tree limbs. Use cautionif you must drive.

National Weather Service

Fire Weather Watch issued January 5 at 2:40PM PST until January 10 at 5:00PM PST by NWS Los Angeles/Oxnard CA...WIDESPREAD DAMAGING NORTH TO NORTHEAST WINDS AND LONG DURATIONOF RED FLAG CONDITIONS LIKELY OVER MANY PORTIONS OF LOS ANGELESAND VENTURA COUNTIES BETWEEN TUESDAY AND THURSDAY -- POSSIBLYEXTENDING INTO FRIDAY......RED FLAG WARNING IN EFFECT FOR MUCH OF LOS ANGELES COUNTY ANDSOUTHERN VENTURA COUNTY MOUNTAINS/EASTERN VENTURA COUNTY VALLEYSFROM 10 AM TUESDAY TO 6 PM THURSDAY -- FIRE WEATHER WATCHES REMAINTHURSDAY NIGHT INTO FRIDAY......FIRE WEATHER WATCH REMAINS IN EFFECT FOR VENTURA COUNTY COASTALPLAIN AND NORTHERN VENTURA MOUNTAINS FROM 10 AM TUESDAY TO 6 PMFRIDAY......FIRE WEATHER WATCH REMAINS IN EFFECT FROM 6 PM TUESDAY TO 8 PMWEDNESDAY FOR THE LOS ANGELES COAST, PALOS VERDES, AND CATALINAISLAND....While there is still some uncertainty in this week's strong windevent and corresponding humidity levels at the onset, there isgrowing confidence for a widespread strong/damaging north tonortheast wind event with an extended period of dangerous RedFlag conditions. While the longer duration of strong winds isexpected to be focused across Los Angeles and Ventura counties,there is a 20-30 percent chance of shorter duration Red Flagconditions across portions of Santa Barbara and San Luis Obispocounties.With widespread damaging winds likely from Tuesday afternoon intoWednesday across portions of Los Angeles and Ventura counties,there will be an increased risk for downed trees and powerlines,as well as power outages. There is also the potential for moderateto strong north to northeast winds for the LA county coast,(especially Hollywood Hills, Beverly Hills, and Sepulveda Pass)extending into Palos Verdes and Catalina Island Tuesday eveninginto Wednesday, resulting in the Fire Weather Watch for theseareas. There is a high probability of strong mountain wave windconditions during the peak of the event Tuesday afternoon intoWednesday, which could bring strong/damaging winds to areas thattypically do not see strong winds, including portions of the SanGabriel Valley and San Fernando Valley. Fire Weather Watches havebeen converted to Red Flag Warnings in the Tuesday throughThursday time frame for areas where there is highest confidence ofreaching critical Red Flag thresholds....FIRE WEATHER WATCH NOW IN EFFECT FROM THURSDAY EVENING THROUGHFRIDAY AFTERNOON FOR POTENTIAL WEAK TO MODERATE OFFSHORE WINDSAND LOW RELATIVE HUMIDITY FOR MUCH OF LOS ANGELES AND VENTURACOUNTIES...The National Weather Service in Los Angeles/Oxnard has issued aRed Flag Warning for strong/damaging north to northeast winds andlow relative humidity, which is in effect from 10 AM Tuesday to 6PM PST Thursday.* WINDS...Most Likely Outcome-Strong/damaging north to northeastwind event Tuesday afternoon into Wednesday with sustained windsof 35 to 55 mph and widespread damaging wind gusts of 50 to 80mph. Strongest winds likely in the mountains, foothills, andvalleys, with isolated gusts of 80 to 100 mph possible forfavored foothills of the San Fernando/San Gabriel Valleys alongthe Highway 210 corridor from Sylmar/San Fernando eastward tofoothill communities such as La Crescenta, Altadena, Monrovia,and Azusa. Moderate north to northeast winds will likely persistThursday with gusts of 30 to 45 mph, with some weakeningpossible by Friday.* RELATIVE HUMIDITY...Most Likely Outcome-Humidities likelyfalling to between 20 and 30 percent in many areas by early tomid Tuesday afternoon, then widespread 15 percent or lesspotentially Tuesday night into Friday. There is also a chanceof localized single digit humidities at times Wednesday intoFriday.* IMPACTS...If fire ignition occurs, conditions are favorable forvery rapid fire spread and extreme fire behavior, including longrange spotting, which would threaten life and property. Therewill be a high potential for downed trees and powerlines, aswell as power outages.* ADDITIONAL DETAILS...Confidence is growing that this willlikely be a widespread damaging windstorm across portions ofLos Angeles and Ventura counties with dangerous fire weatherconditions.A Red Flag Warning means that critical fire weather conditionsare either occurring now, or will shortly. Use extreme cautionwith anything that can spark a wildfire. Residents near wildlandinterfaces should be prepared to evacuate if a wildfire breaksout. See readyforwildfire.org and wildfirerisk.org forinformation.A Fire Weather Watch means that critical fire weather conditionsare likely to occur in the coming days. Residents near wildlandinterfaces should prepare now on what to do if a wildfire breaksout. See readyforwildfire.org and wildfirerisk.org forinformation..

National Weather Service

Air Quality Alert issued January 5 at 9:59AM PST by NWS Los Angeles/Oxnard CA* WHAT...The South Coast AQMD has issued a mandatory wood-burningban for residents in the South Coast Air Basin. The No-Burn rulebans burning wood, pellets, and manufactured fire logs in any indooror outdoor wood-burning device.* WHERE...The South Coast Air Basin, which includes Orange Countyand non-desert portions of Los Angeles, Riverside, and SanBernardino counties. No-Burn Day alerts do not apply to areas above3,000 feet in elevation, the Coachella Valley, or the High Desert.Homes that rely on wood as a sole source of heat, low-incomehouseholds and those without natural gas service also are exemptfrom the requirement.* WHEN...Monday, January 6, 2025.* IMPACTS...Particles in smoke can get deep into the lungs and causehealth problems (including asthma attacks), increases in emergencyroom visits, and hospitalizations. No-Burn Days are needed toprotect public health when fine particle pollution levels areexpected to be high anywhere in the South Coast Air Basin. No-BurnDays are based on fine particle pollution levels that are forecastedfor an entire 24-hour period, which may not be reflected in real-time air quality maps.To protect your health, check current and forecasted air qualitylevels at www.aqmd.gov or download the mobile app atwww.aqmd.gov/mobileapp. When air quality is poor in your area,limited extended or intense outdoor activity and remain inside withwindows and doors closed. Run your air conditioner and/or an airpurifier and avoid using devices that bring in outside air like aswamp cooler or whole house fan if you have other ways to stay cool.Additional details for this air quality alert are available atwww.aqmd.gov/advisory. Information on the South Coast AQMD CheckBefore You Burn program is available at www.aqmd.gov/cbyb.

National Weather Service