An upper level trough and potent mid-level vorticity maximum rotated over the Ohio Valley December 1-2, 2025. The deep mid-level trough helped increase lower level southwesterly winds and moisture advection into southern Indiana.
Every event with a place to put it; 5 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LMK wrote it up.
An upper level trough and potent mid-level vorticity maximum rotated over the Ohio Valley December 1-2, 2025. The deep mid-level trough helped increase lower level southwesterly winds and moisture advection into southern Indiana. Deep moisture and cold temperatures led to the development of moderate to heavy snowfall. Sleet briefly mixed in in some areas late on December 1, before precipitation quickly changed over to all snow from west to east during the early morning hours of December 2, 2025. Robust mid-level frontogenesis led to the development of heavier mesoscale snow bands. In the end, a swath of heavy snow totaling around 4 inches occurred in far southern Indiana.
The national radar mosaic for the moment the first event began.
5 heavy snow. Local standard time, as filed.
Heavy snowfall of 4 inches occurred in Jefferson County. 911 Dispatch reported hazardous road conditions and several vehicle slide-offs.
Heavy snowfall of 4.0-4.5 inches occurred in Clark County.
Heavy snowfall of 4 inches occurred in Floyd County.
Heavy snow totaling 4 inches fell in Harrison County.
Heavy snowfall totaling around 4 inches occurred in Crawford County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2025Every state in 2025This day in weather historyWarnings in Indiana, December 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1306326, 1306327, 1306328, 1306329, 1306330.