Atmospheric river to bring heavy rain and mountain snow to NorCal, thunderstorms to the Central Valley
From Daniel Swain at the California Weather Blog:
After a record wet winter across much Northern California (and a less impressive but still above average winter in Southern California), March was a relatively dry month across most of the state. This was especially true across the southern third of California, where little to no significant precipitation occurred amidst warmer than average temperatures. These relatively early spring-like conditions not only mean that Sierra snowmelt season is in full swing, but also have combined with prodigious winter rains to produce spectacular wildflower displays across southern and central California.
Despite the warm and relatively dry interlude over the past few weeks, it now appears quite likely that winter-like weather conditions will return rather suddenly over the next couple of days. Northern California will be in the crosshairs of an unusually powerful late-season Pacific storm system from Thursday into the weekend.
A pair of pretty deep surface lows are expected to spin up just offshore the North Coast, bringing strong and perhaps even damaging winds to a wide swath of Northern California (perhaps as far south as the Bay Area and Sacramento region). In fact, the surface low off of the Oregon coast on Friday afternoon will probably approach record strength for this time of year, since deep lows typically become uncommon in this region once April rolls around.
Continue reading at the California Weather Blog here: Unusually strong April storm headed for Northern California this week
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