Hurricane Hilary is threatening the Southwest U.S. and California, where heavy rains and flash flooding are expected.
Kathryn Prociv
Hilary, located in an environment ripe for rapid intensification, is forecast to become a major category 4 hurricane by late Thursday night or early Friday morning. But if it makes landfall in the U.S., it’s expected to weaken. Heavy rains, however, are projected, especially in California, where several month’s worth of rain could fall in just one or two days, potentially causing flash flooding.
Ahead of this threat, the Weather Prediction Center already placed parts of southern California and the Southwest under a slight risk for flooding rainfall Saturday into Sunday, and a moderate risk for heavy rainfall in the Sunday to Monday timeframe.The storm is forecast to weaken due to land interaction and cooler sea surface temperatures farther north, but there is still potential for Hilary to remain a tropical storm as it approaches California.
In fact, the only time a tropical storm has made landfall in California this century was the Long Beach in 1939, according to the National Weather Service.
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