More than 5 inches of rain is forecast in some areas of California, adding to the state's snowpack melt and threatening floods for millions.
that meteorologists are"very nervous" about the incoming storm. Pastelok said the past few weeks have been chilly for California, leaving snow that hasn't melted.
"When you put rain, 2 or as much as 5 or 6 inches of rain on top of that, that snow is not deep enough to absorb water, so it runs off very fast," Pastelok said."This has a higher potential of producing more flooding in the lower elevations of the western Sierra [mountains]. We are very nervous about that and concerned on the flood situation.
The atmospheric rivers can carry excessive vapor that is equivalent to the Mississippi River's average flow. The atmospheric river is anticipated to make landfall Thursday and impact the northern two-thirds of California. The NWS Weather Prediction Center warned that those residing below 5,000 feet elevation are at risk for floods, with the most severe risk concentrated around the foothills of the Sierra Nevada mountains.
Much of the state is forecast to receive 3 to 5 inches of precipitation, with some of the state slated to receive less—1 to 3 inches. Part of the state can expect to see more than 5 inches, mostly in the east-central parts of California. NWS Weather Prediction Center warned that heavy, wet snow will be likely in higher elevations of the Sierra Nevada mountains in northern California and could disrupt travel.The increased rain and snowpack melt has removed all of California from the extreme drought category, as documented weekly by the U.S. Drought MonitorThree months ago, the map showed more than 40 percent of the state battling extreme drought and more than 12 percent of the state battling exceptional drought.
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