Sunday, March 24, 2019

Threat for flooding, heavy snow renewed throughout California through midweek

By Faith Eherts, AccuWeather meteorologist



Another round of soaking winter weather is on the horizon for the West Coast, with a series of storms expected to impact the region through midweek.
Dry weather has been rare for much of California over the past week, with Sunday acting as a brief respite before more rain arrives that night.
"Unsettled weather will continue across the West Coast this week as more rain and mountain snow targets Northern California, Oregon and Washington," according to AccuWeather Meteorologist Max Vido. "The first round of storminess will arrive late Sunday night across Northern California with rain spreading into western Oregon and Washington during the day Monday."
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Outdoor events will need to be rescheduled or moved indoors, and slowed traffic is likely as water ponds on roadways and visibility decreases in times of heavy rain through Monday night. However, widespread flooding is not expected.
Only a few showers will remain on Tuesday across Northern California before the next storm moves onshore. Many across the Pacific Northwest may enjoy relatively pleasant weather on Tuesday, in fact, with some sunshine and temperatures reaching into the 50s F.
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On Tuesday night however, another multifaceted winter storm is expected to spread over much of California.
Rain will pick up over much of the region, mainly over coastal areas and in the foothills of the Sierra. Flooding will be possible, as many areas have already exceeded their normal rainfall for the month.
"Rainfall amounts could total close to 6 inches in the coastal ranges and foothills of the Sierras," Vido warned.
Travel delays are likely as flash flooding and mudslides threaten to block or wash out roadways. Flight delays can also mount as visibility decreases in times of heavy rain - thunderstorms with lightning and small hail are possible throughout the San Joaquin Valley.
Snow is again expected across the higher terrain, with feet of accumulation possible over the Sierras.

"Throughout this period of storminess, snow levels will average from 4,000-5,000 feet in Oregon to around 5,000-6,000 feet across the central Sierras in California," Vido said. Passes at these levels will face rapidly deteriorating conditions as roads become slick and snow covered, and travel restrictions or closures may become necessary over Donner Pass.
Ski resorts will need to be ready to dig out from another heavy snowfall event, further ensuring that closing dates will be pushed deeper into the summer months with the incredible available snowpack.
To keep an eye on the forecast, download the free AccuWeather app.
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