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California\u2019s first significant summer heat wave<\/strong> is on the horizon, expected to arrive next week<\/strong> as a large ridge of high pressure<\/strong> builds across the Southwest<\/strong>. After a cooler-than-average June<\/strong> and a mild Fourth of July<\/strong>, forecast models are now signaling a shift to a classic mid-summer pattern<\/strong>: a sprawling dome of heat<\/strong> pushing temperatures to dangerous highs<\/strong> across much of the Western United States<\/strong>.<\/p>\n The most intense part of this heat wave is projected to occur between Tuesday, July 8<\/strong>, and Friday, July 11<\/strong>, as the upper-level high pressure system<\/strong> strengthens over New Mexico<\/strong> and Arizona<\/strong>, then gradually shifts toward Southern California<\/strong>. Clockwise circulation<\/strong> around the ridge will help maintain a southwest flow<\/strong> along the California coast<\/strong>, preserving the marine layer<\/strong> and keeping coastal temperatures<\/strong> relatively mild.<\/p>\n That said, inland areas<\/strong> will experience a very different story<\/strong>, with widespread 100s\u00b0F (38+\u00b0C)<\/strong> anticipated.<\/p>\n The heat wave begins in earnest Tuesday<\/strong>, impacting the Southwest<\/strong> and interior West<\/strong> first. Phoenix<\/strong>, Las Vegas<\/strong>, and Palm Springs<\/strong> will approach 110\u00b0F (43\u00b0C)<\/strong>, while the heat spreads north through the Great Basin<\/strong> and into Oregon<\/strong>, Washington<\/strong>, and Idaho<\/strong>. Cities like Boise<\/strong>, Spokane<\/strong>, and Medford<\/strong> are forecast to run 10 to 15 degrees above normal<\/strong>, with highs reaching well into the 90s\u00b0F (32\u201337\u00b0C)<\/strong> and possibly higher.<\/p>\n Along the Bay Area coast<\/strong> \u2014 including San Francisco<\/strong>, the Peninsula<\/strong>, South Bay<\/strong>, and the Santa Cruz Mountains<\/strong> \u2014 temperatures will remain more moderate. Highs will peak in the 80s to low 90s\u00b0F (27\u201333\u00b0C)<\/strong> on Wednesday and Thursday<\/strong>, the likely peak days statewide.<\/p>\n However, just a few miles inland<\/strong>, the intensity will escalate sharply. Parts of the East Bay<\/strong> and North Bay interior<\/strong> could see widespread 90s\u00b0F (32\u201337\u00b0C)<\/strong>, with several locations likely crossing the 100\u00b0F (38\u00b0C)<\/strong> threshold by midweek.<\/p>\n The Central Valley<\/strong> and inland Southern California<\/strong> will bear the brunt of this heat wave starting Wednesday<\/strong>. Cities from Redding<\/strong> to Fresno<\/strong>, Bakersfield<\/strong> to Riverside<\/strong>, are expected to experience multiple consecutive days of triple-digit heat<\/strong>, with highs ranging from 100\u00b0F to 110\u00b0F (38\u201343\u00b0C)<\/strong>.<\/p>\n The Mojave Desert<\/strong> and high desert regions<\/strong> could get even hotter, particularly on Thursday and Friday<\/strong>, when the ridge’s influence will be strongest over Southern California<\/strong>.<\/p>\n The good news: most forecast models suggest this won\u2019t be a prolonged event<\/strong>. The ridge is expected to weaken<\/strong> and shift eastward by the weekend<\/strong>, allowing temperatures to moderate<\/strong> somewhat along the coast<\/strong> and in Northern California<\/strong>.<\/p>\n Still, triple-digit heat<\/strong> may linger longer in the Central Valley<\/strong> and inland Southern California<\/strong>. And any stretch of hot, dry weather in July<\/strong> increases the threat of wildfire<\/strong>. Fine fuels in the foothills<\/strong> of the Central Valley<\/strong> and along the western slopes of the Sierra Nevada<\/strong> are already dry. While offshore winds<\/strong> aren\u2019t expected with this event, extreme heat<\/strong> and low humidity<\/strong> could bring critical fire weather conditions<\/strong> to inland zones.<\/p>\n San Francisco<\/strong>: Persistent marine layer clouds will keep most of the city cool, especially west of Twin Peaks<\/strong>, including the Sunset<\/strong> and Richmond<\/strong> districts, where highs will remain in the upper 50s\u00b0F (14\u201315\u00b0C)<\/strong>. Downtown<\/strong> may touch the low 60s\u00b0F (16\u201317\u00b0C)<\/strong>. Afternoon west winds<\/strong> will gust 20 to 30 mph<\/strong>, with clouds and breezy conditions returning overnight. Lows<\/strong> in the mid-50s\u00b0F (12\u201313\u00b0C)<\/strong>.<\/p>\n North Bay<\/strong>: Morning cloud cover from the Marin Coast<\/strong> inland through the 101 corridor<\/strong> will clear by early afternoon. Novato<\/strong>, Napa<\/strong>, and San Rafael<\/strong> will reach the mid to upper 70s\u00b0F (24\u201326\u00b0C)<\/strong>, with Santa Rosa<\/strong> and Vacaville<\/strong> climbing into the 80s\u00b0F (27\u201329\u00b0C)<\/strong>. Southwest winds<\/strong> will gust between 20 and 25 mph<\/strong>, stronger in passes and elevated areas. Overnight skies<\/strong> will stay mostly clear inland, with low clouds returning near water.<\/p>\n East Bay<\/strong>: Morning fog and clouds along the bay will give way to sunshine inland. Highs in Richmond<\/strong>, Berkeley<\/strong>, and Oakland<\/strong> will reach the upper 60s to low 70s\u00b0F (20\u201322\u00b0C)<\/strong>. The Tri-Valley<\/strong> area will see low 80s\u00b0F (27\u00b0C)<\/strong>. Afternoon west winds<\/strong> will be strong, 20 to 30 mph<\/strong>, with gustier winds<\/strong> possible through interior passes. Overnight lows<\/strong> in the 50s\u00b0F (10\u201313\u00b0C)<\/strong>.<\/p>\n Pacific Coast and Peninsula<\/strong>: A cool, cloudy, and breezy day<\/strong> along the Pacific Coast<\/strong>. Half Moon Bay<\/strong> and Pacifica<\/strong> will stay in the upper 50s\u00b0F (14\u201315\u00b0C)<\/strong>. The Peninsula<\/strong> will see partial afternoon sun<\/strong>, with highs in South San Francisco<\/strong> and San Mateo<\/strong> in the mid to upper 60s\u00b0F (18\u201320\u00b0C)<\/strong>. The San Bruno gap<\/strong> may see gusts up to 40 mph<\/strong>. Overnight, skies will stay mostly clear east of the ridge, with coastal clouds and lows in the 50s\u00b0F (10\u201313\u00b0C)<\/strong>.<\/p>\n South Bay and Santa Cruz<\/strong>: Clouds will clear quickly through the Santa Clara Valley<\/strong> and Santa Cruz<\/strong>, allowing for a sunny afternoon<\/strong>. San Jose<\/strong>, Cupertino<\/strong>, and Milpitas<\/strong> will reach the mid to upper 70s\u00b0F (24\u201326\u00b0C)<\/strong>, while coastal Santa Cruz<\/strong> will top out in the low 70s\u00b0F (21\u201322\u00b0C)<\/strong>. West to northwest winds<\/strong> will be breezy at 10 to 20 mph<\/strong>, relaxing overnight. Lows<\/strong> will fall into the 50s\u00b0F (10\u201313\u00b0C)<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":" California\u2019s first significant summer heat wave is on the horizon, expected to arrive next week as a large ridge of high pressure builds across the Southwest. After a cooler-than-average June and a mild Fourth of July, forecast models are now signaling a shift to a classic mid-summer pattern: a sprawling dome of heat pushing temperatures […]<\/p>\n","protected":false},"author":2,"featured_media":5332,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5331","post","type-post","status-publish","format-standard","has-post-thumbnail","category-news"],"yoast_head":"\n<\/h2>\n
Peak heat expected between Tuesday and Friday<\/strong><\/h2>\n
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Southwest and interior West to feel initial blast<\/strong><\/h2>\n
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Bay Area: mild coast, intense inland warmth<\/strong><\/h2>\n
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Central Valley and Southern California to face extreme heat<\/strong><\/h2>\n
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Heat wave to ease by the weekend, but fire risk climbs<\/strong><\/h2>\n
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Thursday, July 10 outlook for key regions<\/strong><\/h2>\n