WPC Winter Weather Forecasts
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Winter Weather Forecasts
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Probability Maps:
Snow
Freezing Rain
Composite
Day 4-7 Outlook
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View the official NWS 6-hour snow accumulation forecasts
WPC Forecasts in GIS Format:
Shapefiles
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(ftp site)
Information
KML
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Information
Snowfall Probability Forecasts
The following charts depict the probability of snowfall reaching or exceeding the specified amount.
Preliminary Forecasts
All viewing options are available through the links below.
≥ 1 inch
Day 1
≥ 1 inch
Day 2
≥ 1 inch
Day 3
Specific accumulation
thresholds for Days 1-3:
All accumulation
thresholds for:
≥ 1 inch
≥ 8 inches
Day 1
≥ 2 inches
≥ 12 inches
Day 2
≥ 4 inches
≥ 18 inches
Day 3
≥ 6 inches
Final Forecasts
Day 1
Day 2
Day 3
≥ 4 inches
≥ 4 inches
≥ 4 inches
≥ 8 inches
≥ 8 inches
≥ 8 inches
≥ 12 inches
≥ 12 inches
≥ 12 inches
24-, 48-, and 72-Hour Snowfall Percentile Accumulation Forecasts for Days 1-3
Day 4-7 Outlook
Day 4
Day 5
Day 6
Day 7
Specific
(deterministic) snow accumulations
for locations in the United States can be obtained from the National Weather Service's
National Digital Forecast Database
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
The following charts depict the probability of freezing rain reaching or exceeding the specified amount.
Preliminary Forecasts
All viewing options are available through the links below.
≥ 0.01 inch
Day 1
≥ 0.01 inch
Day 2
≥ 0.01 inch
Day 3
Specific accumulation
thresholds for Days 1-3:
All accumulation
thresholds for:
≥ 0.01 inch
Day 1
≥ 0.10 inch
Day 2
≥ 0.25 inch
Day 3
≥ 0.50 inch
Final Forecasts
The charts below depict the probability of freezing rain reaching or exceeding
0.25 inch
for Days 1-3.
≥ 0.25 inch
Day 1
≥ 0.25 inch
Day 2
≥ 0.25 inch
Day 3
24-, 48-, and 72-Hour Freezing Rain Percentile Accumulation Forecasts for Days 1-3
Composite Charts
The following charts depict in a 4-panel format the final forecast of the probabilities of snow reaching or exceeding 4, 8, and 12
inches and the probability of freezing rain reaching or exceeding 0.25 inch.
Day 1
Day 2
Day 3
Current Surface Low Positions
This chart depicts a multi-hour loop of WPC's surface analysis and base reflectivity from CONUS radars.
Current Surface Low Positions
Heavy
Snow/Icing Discussion
Winter Weather Links
Probability of Near-Surface Temperatures at or Below 32
Degrees
Wind Chill Chart
NWS's Winter Weather Safety and Awareness
home page
Significant Winter Weather Event Reviews
NOHRSC Observed Snowfall Analysis
Recent Snowfall and SnowDepth Maps
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College Park, Maryland 20740
Weather Prediction Center Web Team
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Page last modified: Wednesday, 26-Feb-2025 15:14:07 UTC