Weather
Heatwave In Inland Orange County; How Long will it Last?
The heatwave is building throughout Monday, Aug. 15. This is why it's so hot in Mission Viejo and surrounding areas of inland Orange County
MISSION VIEJO, CA—The National Weather Service forecast sunny skies today and highs in Orange County, with highs of 79 in Newport Beach; 81 in San Clemente; 83 in Laguna Beach; 91 in Anaheim and Irvine; 94 in Mission Viejo; 95 in Fullerton; and 98 in Yorba Linda.
The coastal sites are definitely the pace to be. Read your hourly weather forecast for:
Yorba Linda, currently Orange County's warmest community, is forecast to have a high of 98 today, 95 Tuesday, 91 Wednesday, 90 Thursday, 88 Friday and Saturday, and 89 Sunday.
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Sunny skies were also forecast in Los Angeles County of 79 in Avalon; 80 at LAX; 89 in downtown L.A.; 90 in Long Beach; 93 on Mount Wilson; 95 in San Gabriel; 97 in Burbank; 99 in Pasadena; 102 in Saugus and Palmdale; 103 in Lancaster; and 105 in Woodland Hills. Sunday's high in Woodland Hills was 102.
At the peak of a Southland heat wave, the National Weather Service issued a red flag warning today for the San Gabriel Mountains in Los Angeles and Ventura counties and the foothills in the Antelope Valley.
Find out what's happening in Mission Viejofor free with the latest updates from Patch.
The warning, which denotes a heightened risk of wildfire, was the first issued since the region's heat wave began Saturday.
The current mid-August heat wave is expected to end Wednesday, even though forecasters said today that an "elevated fire danger" will exist in inland areas through Thursday because a hot and dry air mass is parked overhead, and a strengthening onshore flow will generate gusty winds.
No other red flag warnings were immediately issued, but "elevated fire danger" will persist in interior sections of Ventura County and some foothill areas, according to the NWS.
Temperatures will rise today, then decline a few degrees in coming days. The heat wave is the result of an upper-level high-pressure system combined with weakening onshore flow, the National Weather Service said. Temperatures into the triple digits are expected across the Antelope, Santa Clarita and San Fernando valleys as well as in the foothills and the San Gabriel Mountains at lower elevations.
"The prolonged heat wave will likely result in an increased risk of heat-related illnesses, especially for the homeless, elderly, infants and anyone participating in outdoor activities," according to the NWS.
Forecasters urged residents to stay well-hydrated, wear light-colored lightweight clothing, stay indoors when temperatures are at their highest and never leave people or pets in parked vehicles in hot weather, even for a short time. People with heart disease, asthma or other respiratory diseases who live or work in high-heat areas are especially urged to minimize outdoor activities.
Temperatures will be around three degrees lower Tuesday, stay the same or drop another couple of degrees Wednesday, then remain roughly at the same level for a few days more.
In downtown L.A., for example, the seven-day NWS forecast shows highs of 89 today, 85 Tuesday, 83 Wednesday, 81 Thursday, 79 Friday, 81 Saturday and 82 Sunday. At the same time, Woodland Hills' highs, 105 today, are forecast to be 101 Tuesday, 97 Wednesday, 94 Thursday, 92 Friday, 94 Saturday and 95 Sunday.
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