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Ranked by highest single-day school closure probability in the next 7 days. Updated daily using NWS forecasts, snow/ice risk, and local snow readiness.
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Every morning, Snow Day Signal screens hundreds of U.S. cities for school closure risk. The model pulls 7-day forecasts from the National Weather Service, evaluates predicted snowfall and ice accumulation, checks for active winter weather alerts, and factors in each city's local snow readiness — how prepared its infrastructure is for winter weather based on historical snowfall patterns.
Cities are ranked by their highest single-day closure probability over the next 7 school days. The result is a daily snapshot of where in the country schools are most likely to close or delay, updated each morning before the school day begins.
Cities are ranked by their highest single-day school closure probability over the next 7 days. The model evaluates NWS forecasts for snowfall, ice accumulation, active winter weather alerts, and each city's local snow readiness based on historical snowfall patterns.
Snow Day Signal uses National Weather Service 7-day forecasts, NOAA climate normals, and active weather alerts. The model factors in predicted snowfall and ice amounts, temperature, precipitation probability, local snow preparedness (based on average annual snowfall), and aftermath effects from recent storms.
The leaderboard is updated daily each morning before the school day begins. It screens hundreds of U.S. cities and surfaces the ones with the highest closure risk.
Snow readiness (or preparedness) reflects how equipped a city is to handle winter weather based on its average annual snowfall. Cities that regularly receive heavy snow have more plows, salt reserves, and experience — so they need a bigger storm to close schools. Cities that rarely see snow are more likely to close from even a few inches.