Experimental Winter Storm Outlook
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Product Description
Experimental Winter Storm Outlook (WSO)
The Winter Storm Outlook is experimental and does not depict
official warnings, and should always be used in context with official NWS forecasts and warnings. Because this
product is experimental, it may not update in a timely fashion. Always check the creation and valid times. For more
information, please refer to the following links:
Product/Service Description
Document
Please provide us your feedback
here
Probability of Exceeding Warning Criteria (Snowfall)
More Info
Individual day forecasts are the maximum probability of exceeding the Proposed Event-based Winter Storm Warning Criteria for Snow Accumulation during the Valid Time Range from the Probabilistic Winter Precipitation Forecast (PWPF) for a 24-hour period from 12Z to 12Z. The data in the "Days 1-4" link are simply the maximum probabilities from all four days. These forecasts may include edits by forecasters.
Probability of Exceeding Warning Criteria (Freezing Rain)
More Info
Individual day forecasts are the maximum probability of exceeding NWS Winter Storm Warning Criteria from the Probabilistic Winter Precipitation Forecast (PWPF) for a 24-hour period from 12Z to 12Z. The data in the "Days 1-4" link are simply the maximum probabilities from all four days. These forecasts may include edits by forecasters.
Map Overlays
CWAs
Counties
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ARTCC/FIR
WPC PWPF Snow Forecast
| Proposed Event-based Winter Storm Warning Criteria:
Criteria
Download WSO Data in KMZ/KML
WPC PWPF Ice Forecast
| NWS Winter Storm Warning Freezing Rain Criteria:
Criteria
Download WSO Data in SHP
Select Zoom Area:
Change image opacity:
Select WSO Option to Retrieve Static Images
WSO for Snow
WSO for Freezing Rain
Day 1
Day 2
Day 3
Days 4
Days 1-4
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