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Flash Flooding possible across parts of northern/central Californiatoday, then central/southern California on Thursday.Heavy Snow spreads into the Sierra Nevada, Great Basin, IntermountainWest and Rockies.Above average temperatures continue across middle third of thecountry.Moisture will focus along a strong surface front entering the West Coasttonight. Heavy to excessive rainfall is expected to impact the southernOregon coast down through central California tonight into early Thursdaymorning...

