Drenching storms, cooler air to expand southward along West Coast
The storm that arrived along the Washington and Oregon coasts late Wednesday failed to produce severe thunderstorms, primarily due to its late arrival. However, some locally heavy and gusty thunderstorms still developed along the Interstate 5 corridor.
With thick clouds and drenching rain persisting along the coast into Friday, ponding may occur on some highways, rainfall could be heavy enough to trigger some rock and mudslides in the hilly terrain.
Snow levels will lower in the Cascades, Siskiyous and northern Sierra Nevada into Friday. A mixture of rain and wet snow will fall over the ridges and peaks, with up to a foot of accumulation possible.
East of the Cascades, a second round of gusty thunderstorms with hail is possible Thursday afternoon and evening as just enough warmth lingers in the lower part of the atmosphere and much colder air arrives aloft. Chilly air will mix down Thursday night and Friday.
As the warmth-busting storm moves well inland on Saturday and Sunday, some dry air will follow. Where the March sun emerges, it will help spark a modest temperature rebound along much of the Pacific coast.
Another storm well offshore as of Thursday will roll in later this weekend. The exact track and intensity of that storm is fluctuating, but indications suggest that at least a broad plume of moisture from the storm will move in farther south along the Pacific coast as the jet stream dips more.Have the app? Unlock AccuWeather Alerts™ with Premium+
Rain may soak some coastal areas in southern Oregon and Northern and Central California, with showers breaking inland from Sunday to Monday.
Next week, additional storms carrying batches of moisture will roll in from the Pacific. At least one system will bring opportunities for some late-season rain and mountain snow in Northern and Central California.
The best chance of rain showers to reach coastal areas of Southern California - including Los Angeles and San Diego - will be from Wednesday to Friday.
"The zone that could be the biggest beneficiary of the pattern through next week may stretch from southwestern Oregon to northwestern California," AccuWeather Chief On-Air Meteorologist Bernie Rayno said.
Between 5 and 10 inches of rain could fall in part of the region.
"As the pattern continues to evolve through next week, several feet of snow could fall in the high country of the Sierra Nevada, which would be a fine boost to seasonal totals prior to the end of wintry weather," Rayno added.
Want next-level safety, ad-free? Unlock advanced, hyperlocal severe weather alerts when you subscribe to Premium+ on the AccuWeather app. AccuWeather Alerts™ are prompted by our expert meteorologists who monitor and analyze dangerous weather risks 24/7 to keep you and your family safer.
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USA Today
3 hours ago
- USA Today
Will Tropical Storm Erin hit the US or turn? Here's what early forecasts say.
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USA Today
4 hours ago
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When will Tropical Storm Erin become a hurricane?
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Yahoo
a day ago
- Yahoo
Tropical Storm Erin to become hurricane. Where it's going, Sarasota, Bradenton impact
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See rain associated with system in Gulf A disturbance in the northeast Gulf has a near 0 percent chance of developing before it moves onshore, the National Hurricane Center said "locally heavy rainfall could produce flash-flooding along portions of the Florida Panhandle overthe next day or so." Weather watches and warnings issued in Sarasota, Bradenton, Manatee County When is the Atlantic hurricane season? The Atlantic hurricane season runs from June 1 through Nov. 30. Ninety-seven percent of tropical cyclone activity occurs during this time period, NOAA said. The Atlantic basin includes the northern Atlantic Ocean, Caribbean Sea and Gulf of America, as the Gulf of Mexico is now known in the U.S. per an order from President Trump. NOAA and the National Hurricane Center are now using Gulf of America on its maps and in its advisories. When is the peak of hurricane season? 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Tropical cyclone is the generic term used by the National Weather Service, NOAA and the National Hurricane Center for any tropical system, even if it's in the tropical Atlantic basin. To be more precise, a tropical cyclone is a "rotating, organized system of clouds and thunderstorms that originates over tropical or subtropical waters and has closed, low-level circulation," NOAA sadi. Once maximum sustained winds reach 74 mph, what it is called is determined by where it originated: : for storms in the North Atlantic, central North Pacific, and eastern North Pacific. : for storms in the Northwest Pacific. : for storms in the South Pacific and Indian Ocean. Interactive map: Hurricanes, tropical storms that have passed near your city Stay informed. Get weather alerts via text What's next? We will update our tropical weather coverage daily. Download your local site's app to ensure you're always connected to the news. And look for our special subscription offers here. This article originally appeared on Sarasota Herald-Tribune: Tropical Storm Erin 2025 spaghetti models. Sarasota, Bradenton impact
