The worst will be felt in the northern part of the state. The storm could impact a broad swath of coastal California, reaching as far south as Los Angeles and well past San Francisco to the north, Daniel Swain, a climate scientist at the University of California, Los Angeles said in a news conference Tuesday. ►High Wind Warnings were in effect for portions of southeastern New Mexico and west Texas.Ĩ MORE INCHES OF RAIN? Storm-battered California faces another round of severe weather tornadoes possible in South More storms could follow next week ►Ice Storm Warnings were in effect for portions of central and eastern Nebraska through northwestern Iowa and southern Minnesota. ►Winter Storm Warnings and Winter Weather Advisories were in effect for much of Wyoming, Colorado, South Dakota, Nebraska, Iowa, Minnesota, and Wisconsin, and for portions of northern Michigan and the higher elevations of Arizona and New Mexico. ►Heavy snow was forecast to return to the Sierra Nevada on Wednesday. ►High winds warnings will be in effect for the San Francisco Bay Area and California's central coast from 4.a.m. WHAT IS AN 'ATMOSPHERIC RIVER'? These rivers of water vapor can extend thousands of miles They can be more than 1,000 miles long – and can carry more water than the Mississippi River. Atmospheric rivers are long, flowing regions of the atmosphere that carry water vapor across a swath of sky 250 to 375 miles wide. When it reaches the cooler air over the western landmass, the water vapor falls as heavy rain. On Wednesday the state will face another atmospheric river – or, the term more common years ago, a Pineapple Express. These are storms with heavy rainfall that occur when a line of warm, moist air flows from near the Hawaiian Islands across the Pacific Ocean to the West Coast. LATEST UPDATES WEDNESDAY: Bomb cyclone to pummel California coast Wednesday Bay Area braces for floodingĪ weather phenomenon known as an “atmospheric river” that swept across much of the state over the weekend dumped more than 5 inches of rain on San Francisco and nearly 10 inches elsewhere in the state. "This is truly a brutal system that we are looking at and needs to be taken seriously." "The impacts will include widespread flooding, roads washing out, hillside collapsing, trees down (potentially full groves), widespread power outages, immediate disruption to commerce, and the worst of all, likely loss of human life," the weather service warned in a statement. The storm could drop as much as 8 inches of rain in some areas, falling on already overflowing rivers and saturated ground, according to the National Weather Service in San Francisco, which provided an image of what's approaching. SAN FRANCISCO – A "brutal" storm system building over the Pacific Ocean is poised to slam across Northern California on Wednesday, battering a region already struggling from a weekend of record rains and flooding.
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