Low pressure will bring locally heavy precipitation to the Pacific Northwest, much of California, and the Great Basin today and tonight, before pushing into the Rockies by Monday. Heavy snowfall can be expected in higher elevations, with several feet possible across the Sierra Nevada. Meanwhile, considerably milder temperatures are expected over most of the eastern U.S., including New England. Read More >
(not available for SERFC locations)
"How to Interpret the Hydrologic Ensemble Forecast Service (HEFS) Short-Term Probabilistic Guidance" training materials at COMET (free registration required)
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Map Legend
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Chance of Exceedance
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River Forecast Centers
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30%
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Level
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70%
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Action
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Minor Flood
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Moderate Flood
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Major Flood
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 = less than 30% chance of reaching Action level |
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 = no critical levels defined for this point |
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