3 products issued by NWS for: 4 Miles NNE San Fernando CA
Excessive Heat Warning
URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 326 PM PDT Sun Sep 8 2024 CAZ038-088-352-353-356>358-362-366>380-548-091200- /O.CON.KLOX.EH.W.0007.000000T0000Z-240910T0300Z/ Cuyama Valley-Santa Clarita Valley-Santa Ynez Mountains Eastern Range-Santa Barbara County Interior Mountains-Lake Casitas-Ojai Valley-Central Ventura County Valleys-Malibu Coast-Los Angeles County Beaches-Palos Verdes Hills-Los Angeles County Inland Coast including Downtown Los Angeles-Western Santa Monica Mountains Recreational Area-Eastern Santa Monica Mountains Recreational Area-Calabasas and Agoura Hills-Western San Fernando Valley- Eastern San Fernando Valley-Southeastern Ventura County Valleys- 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-Los Angeles County San Gabriel Valley- Including the cities of Rose Valley, Westlake Village, LAX, Ojai, Hollywood, Woodland Hills, Universal City, Figueroa Mountain, Moorpark, Topatopa Mountains, Mount Baldy, Northridge, Sunland, La Canada Flintridge, Lockwood Valley, Newbury Park, San Rafael Mountain, Malibu Bowl, Rancho Palos Verdes, Redondo Beach, Pyramid Lake, El Monte, Lake Castaic, Long Beach, Santa Monica, Wrightwood, Oak View, Van Nuys, East Los Angeles, Pasadena, Mill Creek, Glendale, Big Pine Mountain, Fillmore, Warm Springs, New Cuyama, Montecito Hills, Santa Clarita, Mount Wilson, Oat Mountain, Compton, Tejon Pass, Downey, Topanga, Malibu Lake, Mount Pinos, Newhall, Simi Valley, Ozena, Santa Paula, Gorman, The Angeles Crest Highway, Meiners Oaks, Thousand Oaks, Pomona, Culver City, Piru, Norwalk, Pacific Palisades, Chatsworth, Burbank, Torrance, San Gabriel, Beverly Hills, Matilija, Valencia, Acton, and Malibu 326 PM PDT Sun Sep 8 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT MONDAY... * WHAT...Dangerously hot conditions with temperatures up to 100 to 110, except 110 to 114 for the western San Fernando Valley and the Santa Clarita Valley. Warm overnight low temperatures in the 70s, and locally higher, will lead to little recovery from the heat. * WHERE...A portion of southwest California. * WHEN...Until 8 PM PDT Monday. * IMPACTS...There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. && $$
Red Flag Warning
URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 142 PM PDT Sun Sep 8 2024 ...RED FLAG WARNING IN EFFECT UNTIL 10 PM THIS EVENING FOR THE INTERIOR MOUNTAINS OF LOS ANGELES, VENTURA, AND SANTA BARBARA COUNTIES (INCLUDING THE SANTA SUSANA MOUNTAINS), AND ANTELOPE VALLEY, DUE TO HOT AND DRY CONDITIONS, LOCALLY GUSTY WINDS, AND POTENTIAL DRY LIGHTNING... ...RED FLAG WARNING EXTENDED UNTIL 11 PM MONDAY EVENING FOR THE WESTERN SANTA YNEZ RANGE AND SOUTHWEST SANTA BARBARA COUNTY COAST... .A long duration heat wave will continue away from the immediate coast, with only minor and slow improvement through Monday. Near record high temperatures will continue this weekend with highs between 105 and 115 common over the valleys, lower mountains, and deserts, and 95 to 105 over the inland coastal plain. Very warm temperatures will persist at night across the mountains and foothills. Locally gusty winds will form as well, strongest over southern Santa Barbara County with Sundowner gusts between 25 and 45 mph each night through Monday, strongest from Gaviota to San Marcos Pass. There is increased instability today, leading to deep mixing heights up to 18,000 feet, which will also lead to a high risk for erratic plume-dominated fire behavior, especially in the mountains, foothills, and deserts. While standard Red Flag Warning criteria is unlikely, there is a history of large fires during similar weather conditions. The threat of thunderstorms will continue this afternoon and evening as mid level monsoonal moisture and instability increase across the region. The best chance of storms today will be across the mountains of Los Angeles and Ventura counties, as well as the Antelope Valley and San Gabriel Valley. Any storms that develop today will have the potential for dry lightning strikes and strong/erratic downburst winds, with localized gusts to 50 mph likely. Due to the significant threat of large plume dominated fires and the risk of dry lightning and additional sundowner winds, the Red Flag Warning remains in effect through this evening for much of the warning area and southwest Santa Barbara through Monday evening. CAZ353-375>381-090500- /O.CON.KLOX.FW.W.0007.000000T0000Z-240909T0500Z/ Santa Barbara County Interior Mountains-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-Western Antelope Valley Foothills- 142 PM PDT Sun Sep 8 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR EXTREME HEAT AND DRY CONDITIONS WITH LOCALLY GUSTY WINDS OVER THE MOUNTAINS AND FOOTHILLS OF SOUTHWEST CALIFORNIA... * WINDS...West to north winds 10 to 15 mph with gusts up to 30 mph. Gusty and erratic winds possible with any new fires or thunderstorms. * RELATIVE HUMIDITY...Minimums 8 to 18 percent. Poor overnight recoveries of 15 to 30 percent. * TEMPERATURES...Maximums between 100 and 110 common for lower elevations, with minimums between 77 and 87. * THUNDERSTORMS...There is a threat for dry lightning over the mountains and adjacent foothills of Los Angeles and Ventura Counties this afternoon and evening, which can start new fires, spread them rapidly with gusty and erratic downburst winds, and provide little if any extinguishing rain. Isolated gusts to 50 mph will be possible near thunderstorms. * 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. && $$
Air Quality Alert
CAZ088-368-372-373-378>380-548-090300- Santa Clarita Valley- Los Angeles County Inland Coast including Downtown Los Angeles- Western San Fernando Valley-Eastern San Fernando Valley- Interstate 5 Corridor- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains-Los Angeles County San Gabriel Valley- Including the cities of Lake Castaic, Newhall, Santa Clarita, Valencia, Beverly Hills, Compton, Culver City, Downey, Hollywood, Norwalk, Northridge, Woodland Hills, Van Nuys, Chatsworth, Burbank, Universal City, Glendale, Sunland, La Canada Flintridge, Tejon Pass, Gorman, Pyramid Lake, Acton, Warm Springs, Mill Creek, Mount Wilson, Mount Baldy, Wrightwood, The Angeles Crest Highway, East Los Angeles, El Monte, Pasadena, Pomona, and San Gabriel 445 PM PDT Sat Sep 7 2024 ...AIR QUALITY ALERT IN EFFECT UNTIL 8 PM PDT MONDAY... The South Coast Air Quality Management District has issued an Air Quality Alert due to elevated fine particulate matter levels due to wildfire smoke and high ozone levels. This Air Quality Alert is IN EFFECT UNTIL 8 PM PDT MONDAY The South Coast AQMD has extended an air quality alert in the South Coast Air Basin due to high levels of ozone (smog) due to the ongoing heat wave and updated an air quality alert due to increased fine particle pollution from wildfire smoke in the region. The air quality alert is in effect until Monday evening for smog and Sunday evening for wildfire smoke. Elevated levels of ozone the predominant summertime pollutant are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: Limit the use of gasoline powered lawn and garden equipment until evening hours Conserve electricity and set your air conditioner at a higher temperature Try to delay trips to the gas station and the use of household chemicals until the evening If you smell smoke or see ash due to a wildfire, remain indoors with windows and doors closed or seek alternative shelter, if feasible. Avoid vigorous physical activity and run your air conditioner and/or an air purifier. If possible, do not use whole house fans or swamp coolers that bring in outside air. Avoid burning wood in your fireplace or firepit and minimize sources of indoor air pollution such as candles, incense, pan-frying, and grilling. If you must be outdoors, keep the time brief and wear a tightly-fitted N-95 or P- 100 respirator to help reduce exposure. Limit the use of gasoline powered lawn and garden equipment. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. People with heart or lung diseases should follow their doctor`s advice for dealing with episodes of unhealthy air quality. Additionally, people with respiratory or heart disease, older adults, and children are particularly susceptible and should avoid prolonged exposure, strenuous activities or heavy exertion as conditions dictate. Levels of particle pollution can vary hour by hour and by location depending on fire behavior and local weather conditions. Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. To view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. $$