National Weather Service United States Department of Commerce

Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >

Observed Precipitation
NERFC Observed Precipitation


Forecast Precipitation
NERFC Forecast Precipitation


3 Hour Flash Flood Guidance
3 Hour Flash Flood Guidance


Flood Potential Outlook
NERFC 5-Day Flood Potential Outlook


Precipitation and Departures from Normal
Precipitation and Departures from Normal


Spring Flood Outlook
Spring Flood Outlook


Snow Water Equivalent
Snow Water Equivalent


 River Conditions

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Recent Flood Statements

Headwater Flash Flood Guidance
Headwater Guidance

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Briefing and Discussion Page

Advanced Hydrologic Prediction Service
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Hydrologic Conditions
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Snow Information from NOHRSC
Snow Water Equivalent
Snow Depth
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Daily Snow Depth Departure from Normal

Hydrologic Ensembles
Short-range Hydrologic Ensembles





Eastern Region Hazards

USGS WaterWatch
USGS WaterWatch


Short Range Forecast
WPC Short Range Forecast


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WPC 1-3 Day QPF
WPC QPF for Days 1-3


Excessive Rainfall Forecast
Excessive Rainfall Forecast


Drought Monitor
Drought Monitor