Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 1251 PM EDT Mon May 20 2024 Valid 00Z Tue May 21 2024 - 00Z Fri May 24 2024 ...WPC Winter Weather Desk no longer routinely staffed this summer... Pending any significant winter weather, the WPC Winter Weather Desk will not be staffed this summer. The desk will resume continuous staffing starting in late September 2024. Most of the winter products from WPC will continue to be produced, including the Winter Storm Severity Index (WSSI), Probabilistic Winter Storm Severity Index (WSSI-P), and the Probabilistic Winter Precipitation Forecasts (PWPF). WPC