“Next week is shaping up to be a pretty crazy weather week in California, TBH – even more so than previously thought,” tweeted Daniel Swain, a climate scientist at UCLA, on Sunday morning. “The ongoing heat wave is expected to be longer and peak even higher, and we now have the potential impact of a hurricane developing soon.” As the heat wave continues, the risk of fires, power outages and heat illness continues. Adding to the fire danger, the remnants of Tropical Storm Javier spun across parts of Southern California on Saturday, bringing a boost of monsoonal moisture and a chance for thunderstorms on Sunday. Moisture is expected to reach the Sierra Nevada on Wednesday. This coming week is shaping up to be a pretty crazy weather week in California, TBH – even more so than previously thought. The ongoing heatwave is expected to be longer and peak even higher, and we now have the potential impact of a hurricane developing soon. (1/n) #CAwx #CAfire pic.twitter.com/55PHsmq1gZ — Daniel Swain (@Weather_West) September 4, 2022 In the San Francisco Bay Area, early forecasts showed the heat wave ending over the three-day holiday weekend, but the latest weather models show the miserable conditions extending beyond that. “At first it looked like Sunday and Monday would be the hottest days of the heat wave, and now it’s Monday and Tuesday with Tuesday being the hottest day,” said Matt Mehle, a forecaster with the National Weather Service’s Monterey office. “His tenacity certainly lasts longer than what was advertised last week. This heat wave will be a marathon, not a sprint.” ⚠Dangerous heat ahead 🥵 Triple digit heat to affect inland portions of the Bay Area and Central Coast through at least midweek. Stay hydrated and stay cool! #CAwx #BayAreaWX #CAheat pic.twitter.com/jzGs4PRZTE — NWS Bay Area 🌉 (@NWSBayArea) September 4, 2022 The inland East Bay is expected to record some of the hottest temperatures in the nine-county region. Livermore is forecast to reach 112 degrees on Monday and Tuesday, 105 on Wednesday and 104 on Thursday. “Some places in the East Bay, we don’t get below 100 degrees until next weekend, and they’ve been over 100 since Thursday,” Mehle said. “This will be a prolonged heat event.” Mehle said a wild card in the Bay Area is how hot it will get in San Francisco on Monday and Tuesday. “If there’s a relaxation in the sea breeze,” he said, “the city has a chance to be warmer than we have in the forecast.” As of Sunday morning, SF is forecast to reach 83 degrees on Monday and 85 degrees on Tuesday. FILE – Alex Nowinski and his dog, Greta, float in the cool water of the American River in Rancho Cordova, California, on Friday. Californians battered by the lengthening western wave have been told to turn down air conditioning and reduce electricity use to prevent strain on the state’s power grid that could lead to rolling blackouts. Rich Pedroncelli / AP It’s the same story in the Sacramento Valley, where weather models show the heat wave persisting beyond a week-long event. The heat wave began Friday in Sacramento. “We’re starting to see temperatures for Thursday and Friday go up,” said Anna Wanless, a meteorologist in the Sacramento office. “Our hottest days will be Monday and Tuesday. This could potentially be a nine-day event, even longer.” Wanless said the weather service office is following downtown Sacramento’s 2006 record of 11 straight days of daytime high temperatures of 100 degrees or more. “There’s a chance we can break that streak,” Wanless said. “There is a lot of uncertainty about the end of next week.” The Sacramento Valley is expected to see afternoon high temperatures of 102 to 109 degrees on Sunday and 108 to 115 on Monday and Tuesday, the weather service said. In the hottest locations, such as Redding, temperatures as high as 113 are possible on Wednesday, as high as 112 on Thursday and 109 on Friday. The foothill areas will see slightly cooler temperatures than the valleys. The weather service said monsoon moisture could push into the Sierra Nevada on Wednesday, bringing a 5 percent to 20 percent chance of thunderstorms south of the 50 freeway through next weekend. People skate under palm trees amid triple-digit temperatures in parts of Southern California on Wednesday in the Venice Beach section of Los Angeles. Marcio Jose Sanchez/AP The heat wave hit Southern California before Northern California, but the latest weather models don’t show it ending any sooner in the southern half of the state than in the northern half. In the Los Angeles area, Wednesday was initially expected to mark the end of well-above-normal temperatures, but meteorologist David Sweet said Sunday morning that recent trends in computer models show Thursday could be another warm day. . In the coming days, Sweet said the Los Angeles area will see “temperatures 10 to 25 degrees above normal.” Forecasters in Southern California are also watching for monsoonal moisture that brings a chance of thunderstorms and dry lightning to mountains, deserts and parts of valleys. “Potential threats include heavy rainfall with localized flooding, gusty winds over 50 mph, hail and frequent lightning,” the weather service said.
