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The Hydrometeorological Prediction Center




Winter Weather Forecasts

Snowfall Probability Forecasts
Probability of snowfall greater than or equal to 4 inches Day 1 Probability of snowfall greater than or equal to 8 inches Day 1 Probability of snowfall greater than or equal to 12 inches Day 1
Probability of snowfall greater than or equal to 4 inches Day 2 Probability of snowfall greater than or equal to 8 inches Day 2 Probability of snowfall greater than or equal to 12 inches Day 2
Probability of snowfall greater than or equal to 4 inches Day 3 Probability of snowfall greater than or equal to 8 inches Day 3 Probability of snowfall greater than or equal to 12 inches Day 3


Specific (deterministic) snow accumulations for a particular location in the United States can be obtained from the National Weather Service home page. Note, at this site you will have to click the GRAPHICAL FORECAST tab prior to clicking a location on the map.

NCEP monitoring of ongoing or imminent (up to six hours in the future) Hazardous Winter Weather can be found at SPC Mesoscale Discussion Link

Freezing Rain Probability Forecasts

Day 1 probability of freezing rain greater than or equal to .25 inch. Day 1 Day 2 probability of freezing rain greater than or equal to .25 inch. Day 2 Day 3 probability of freezing rain greater than or equal to .25 inch. Day 3


Composite Charts

Day 1 probability of snow greater than or equal to 4, 8, and 12 inches and freezing rain greater than or equal to .25 inch Day 1 Day 2 probability of snow greater than or equal to 4, 8, and 12 inches and freezing rain greater than or equal to .25 inch Day 2 Day 3 probability of snow greater than or equal to 4, 8, and 12 inches and freezing rain greater than or equal to .25 inch Day 3


Day 1-3 Surface Low Tracks

Latest HPC surface analysis, NWS Winter Weather Watches/Warnings/Advisories, and radar loop Current Surface Low Positions Day 1-3 forecast of surface low tracks associated with significant winter weather Forecast Surface Low Positions Day 1-3 forecast of surface low tracks associated with significant winter weather Forecast Surface Low Positions (Technical)

Heavy Snow/Icing Discussion

Winter Weather Product Information

Winter Weather Links

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Page last modified: Friday, 07-Dec-2007 14:15:48 GMT