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![Cooler temperatures for Friday morning.]()
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![The Canadian weather model’s rendering of Wednesday evening’s precipitable water levels -how much water is stored in a column of the atmosphere — depicts another plume of moisture spilling into the Bay Area.]()
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![After Monday, the next chance of precipitation is Wednesday night into early Thursday morning.]()
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![The European weather model’s rendering of today’s peak winds across the Bay Area, with gusts up to 30 mph possible in San Francisco, Oakland and the Peninsula. Higher gusts, up to 40 mph, can’t be ruled out as the cold front sweeps into the city this afternoon. Widespread 30 to 35 mph gusts will also be possible in the North Bay mountains, East Bay hills and Diablo Range today.]()
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![The Weather Prediction Center’s precipitation outlook through Tuesday morning, showing rainfall accumulations between 1 and 3 inches across most of the Bay Area. Higher totals will be reserved to the Marin Headlands, Sonoma County mountains, Napa’s Mayacamas Mountains and the Santa Cruz Mountains, where totals are likely to exceed 4 inches over the next few days.]()
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![The American weather model’s 250 mb (contours) view at around 20 to 40 thousand feet up in the atmosphere, with wind speeds (shaded) through this weekend and into early next week. The west-east flow will still hover over California, but a break in the jet stream over Japan and the central Pacific Ocean is a sign that the persistent west-east flow pattern that’s brought so much rain and snow to the Golden State is beginning to loosen up.]()
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Another pineapple express is rolling into Northern California today. Here are the impacts for the...
![A low-pressure system off the coast of the Pacific Northwest will help steer atmospheric moisture from Hawai’i to the West Coast on Wednesday. This pineapple express of moisture will settle mostly over Northern California, bringing a chance for renewed rain showers to most of the Bay Area.]()
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![The amount of convective energy — how much energy the atmosphere has at its disposal to generate storms — available over the California coast on Tuesday morning in units of joules per kilogram. Levels over 100 joules per kilogram are usually enough for heavy downpours and thunderstorms to form along the coast. The European weather model projects a hefty field of energy available off the coast of California for today’s thunderstorms]()
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![Excessive rainfall expected Monday]()
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![Potential strong to damaging wind gusts across the Bay Area into early Monday morning.]()
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![A man walks through floodwater on Aptos Beach Road near Rio del Mar Beach in Aptos (Santa Cruz County) after Wednesday’s storm. California water officials are prepared for record flooding as rain continues in the week ahead.]()
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![Saturday’s storm will tap into an atmospheric river and bring 1 to 2 inches of rain to the Bay Area. Parts of the North Bay will be closer to the center of that atmospheric river, allowing Napa, Sonoma and Marin counties to see totals closer to 3 to 4 inches. Isolated pockets of the Sonoma County mountains could see as much as 6 inches of rain on Saturday.]()
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![The amount of convective energy - how much energy the atmosphere has at its disposal to generate storms - available over the California coast on Monday evening in units of joules per kilogram. Levels over 100 joules per kilogram are usually enough for heavy downpours and thunderstorms to form along the coast. The European weather model projects a hefty field of energy available off the coast of California by Monday night and into Tuesday morning.]()
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![Wednesday’s bomb cyclone is set to slowly march north and away from California, leaving behind a weak trail of showers and winds that will fizzle away by Thursday evening.]()
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Rapidly intensifying ‘bomb cyclone’ to fuel extreme weather in the Bay Area. These areas are most...
![The European weather model’s precipitable water — how much water vapor is ready to fall as rain — anomaly forecast, shows that this upcoming winter storm will host values that are almost three times what’s normal for this time of the year.]()
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![Strong sustained winds are expected Wednesday and Thursday.]()
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![Potential rainfall for the Bay Area during Monday’s storm.]()
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![A prolonged period of westerly flow over the Pacific Ocean is set to hoist large quantities of water vapor onto the West Coast, raising the chances for round-after-round of winter storms slamming into California during the first two weeks of the new year.]()
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![This weekend’s storm door is wide open in California, with a rush of moisture from the tropics -often called the pineapple express—expected to take aim at the Bay Area and most of Southern California over the course of New Year’s Eve.]()
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![Rain falls on pedestrians on Pacific Avenue in San Francisco’s North Beach.]()
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![Rainfall accumulations forecast for Northern California between Thursday and New Year’s Eve, with totals exceeding 3 inches on the San Francisco Peninsula and elevated terrain across the Bay Area. Even higher totals -up to 5 inches—are on tap for the foothills of the Sierra Nevada, though most of that will likely fall as snow.]()
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![A ridge of high pressure is set to build over California this holiday weekend, bringing above-average temperatures to the Bay Area, Sacramento Valley, Central Coast and Southern California. This warmth will last through December 26 before a low-pressure system from the central Pacific Ocean undercuts the ridge and comes ashore on December 27. That low will shift the weather pattern back to cool and wet, bringing with it heavy rainfall across much of the Golden State.]()
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Low-pressure system will bring slight chance of rain to these Bay Area cities today and clear out...
![A small low-pressure system will dive into Northern California this afternoon, bringing a shift in wind patterns that will help alleviate some of the recent haze in the Bay Area, along with raising a slight chance of rain for portions of the North Bay.]()
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![Wednesday morning’s min temperatures across the Western US, with widespread 40s on the California coast, Vegas metro and the Phoenix area. 30s will be more scattered out across the Central Valley while 20s and 10s will be locked onto the Sierra Nevada. The coldest air of the season will stay farther east in the lee of the Rocky Mountains.]()
