Free · No sign-up · Contiguous US
How much snow did we get?
Enter a ZIP code or a city. See how much snow fell — last 24 hours, last 72 hours and this season — and how much more is coming.
Fell, and coming
What NOAA estimates already fell, kept apart from the National Weather Service forecast for the next 72 hours. One is never passed off as the other.
Your spot, not the airport
Totals for the ~4 km grid cell your ZIP sits in, not the nearest weather station miles away.
Honest about its limits
Every number names its window and its source, says when NOAA may still revise it, and warns you in lake-effect belts where narrow snow bands slip between grid cells.
Common questions
How much snow did we get?
Type your ZIP code or tap Use my location. You get NOAA's snowfall estimate for the ~4 km grid cell you are in, for the last 24 hours, the last 72 hours and the season so far, plus the National Weather Service forecast for the next 72 hours.
Where do the snow totals come from?
From NOAA's National Snowfall Analysis, run by the National Operational Hydrologic Remote Sensing Center. It blends radar-based precipitation estimates, a snow-to-liquid ratio and reports from volunteer observers into a 4 km grid of the contiguous US. It is an estimate, and NOAA keeps refining each one for about five days.
Why is the 24-hour total not 'up to now'?
NOAA publishes snowfall for fixed windows that end at 12:00 and 00:00 UTC (7 am and 7 pm Eastern in winter), about two hours after each window closes. Every total on this site says exactly which window it covers.
Does it work in Alaska, Hawaii or Canada?
Not yet. NOAA's snowfall analysis covers the contiguous United States only.
Where these numbers come from
- Snow that fell: NOAA National Snowfall Analysis
- Published by NOAA’s National Operational Hydrologic Remote Sensing Center (NOHRSC) on a ~4 km grid of the contiguous US. It blends radar-based precipitation estimates, a snow-to-liquid ratio and reports from volunteer and cooperative observers. 24-hour totals end at 12:00 and 00:00 UTC and appear about two hours later; 72-hour and season totals are built from the daily 12:00 UTC analysis. NOAA re-runs each analysis for about five days as late reports arrive, so a total can change.
- Snow that’s coming: National Weather Service
- The NWS gridpoint forecast for the spot: snowfall, ice, temperature, chance of precipitation and wind in 6-hour steps for the next 72 hours.
- What it cannot tell you
- A grid estimate is not a ruler in your yard. Snow drifts, settles and melts; totals can change a lot within a few miles; and narrow lake-effect bands can fall between grid cells. Treat these numbers as a good estimate for your area, not a measurement at your door.
Snow totals and alerts on your phone
The SnowDex iPhone app is in the works.