WPC’s winter severity index and its chances of snow and ice, and NWS’s winter and cold alerts in Puerto Rico. WPC draws for the lower 48.
NWS winter alerts: Feed current; checked .
WPC selected map: Feed current; checked .
WPC discussion: Feed current; checked .
Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.
Snow on the ground — NOHRSC pictures and retained history. Source analysis with qualified metadata times; separate from WPC’s winter forecasts and NWS warnings.
WPC: “WSSI does not depict official warnings and should always be used in context with official NWS forecasts and warnings.”
Puerto Rico is outside WPC’s winter products, which are drawn for the conterminous states alone. NWS’s alerts below still cover it.
WPC’s WSSI levels
WPC’s winter severity index and its chances of snow and ice are drawn for the conterminous states alone, so nothing of theirs is shown for Puerto Rico. That is not a forecast of no snow.
No NWS winter or cold alert in Puerto Rico.
No winter storm, blizzard, ice, snow squall, lake-effect, freezing fog, cold or freeze watch, warning or advisory in Puerto Rico.
NWS issues most winter alerts by forecast zone; a zone is a county or part of one. A Snow Squall Warning is drawn by NWS around the squall. NWS’s warnings on the Live map Storm Mode for Puerto Rico, winter
WPC’s Probabilistic Heavy Snow and Icing Discussion, issued , for to . WPC’s words, as written. Data: NOAA/NWS/WPC.
WPC named no region in this discussion.
The probability of significant snow and ice across the CONUS is less than ten percent
Snell
Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 207 PM EDT Fri Oct 16 2026 Valid 00Z Sat Oct 17 2026 - 00Z Tue Oct 20 2026 The probability of significant snow and ice across the CONUS is less than ten percent Snell
Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.
