Curious America · Weather records

Greatest 24-hour snowfall by state

Alaska's record is 78 inches, observed at Mile 47 Camp on February 9, 1963. It is the most extreme greatest 24-hour snowfall among the state records shown here.

Each state contributes a NOAA-recognized snowfall total measured during a 24-hour period. These are individual historical observations, not statewide averages, seasonal norms, or a prediction of typical weather.

The three most extreme records

1. 1.Alaska: 78 inches, Mile 47 Camp — February 9, 1963.
2. 2.Colorado: 75.8 inches, Silver Lake — April 14, 1921.
3. 3.California: 67 inches, Echo Summit Sierra at Tahoe — January 5, 1982.

NOAA's State Climate Extremes Committee reviews these state records. The map reflects the committee table reviewed by MoverMath on September 5, 2026; later reviews can revise a record.

Source: NOAA National Centers for Environmental Information, State Climate Extremes Committee records.