Weather Prediction Center

National Oceanic and Atmospheric Administration

The Probabilistic Winter Storm Severity Index

This display shows the WSSI-P for a period of 24 hours. Each time-step forward is 6 hours starting at 24 hours and extending to 168 hours. As you move forward in time using the slider bar you can see how the WSSI-P is changing every six hours out to the end of the end of day 7 (168 hours). Select the tab with the element name of interest and then select the impact level radio button you are interested in.

Select WSSI-P Impact Level:

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WSSI-P Resources:

WSSI-P User Guide

Product Description Document

Infographic