Winds and bitter wind chills will moderate as a strong low pressure system slowly pulls away from the northeast. An approaching Pacific system will spread lower elevation rain and heavy mountain snow across the West, especially in the Sierra-Nevada mountains. High winds from strong high pressure in the Great Basin will produce high winds for portions of Montana. 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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