San Francisco and San Jose are the 3rd driest since records began. The rainfall deficits across Northern Calif and the Sierra for the past 19-months continue to grow with many in the top 10 driest on record. #CAwx /RhNsH634EK- NWS Bay Area January 30, 2021 Percent of normal increases were much greater farther to the south ( #SanJose, #Salinas) where the AR persisted for much longer. But with a total of just over 17 inches of rain in the past 19 months, the city is as 46% of normal - and this is the third driest period the city has seen since record-keeping began in 1849.Īn #AtmosphericRiver can have a big impact on seasonal rain totals, as can be seen by comparing totals before and after the recent AR event. Each day that passes under normal, it's harder and harder to catch up."ĭuring last week's atmospheric river event, downtown San Francisco saw 2.06 inches of rain over the course of 72 hours, and on Monday night another half inch fell.
At this point, it's a question of how much under normal we're going to be.
"In the Bay Area, we're kind of halfway where we need to be. "The storm did make a dent in the precipitation deficit, but it definitely did not erase it," says National Weather Service forecaster Drew Peterson, speaking to SFGate. Sure, we just saw a lot of rain get dumped on us - some places more than others - but we need a whole lot more, as meteorologists around the Bay Area keep saying. Unless the region gets walloped by a parade of crazy rainstorms in the next month or two, Northern California isn't likely to make up for the deficit of precipitation that our dry November, December and early January left us with.
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