Snow developed ahead of an area of low pressure and an upper level trough. Plentiful moisture combined with strong frontogenetical forcing produced an narrow area of heavy snow.
Every event with a place to put it; 14 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 IND wrote it up.
Snow developed ahead of an area of low pressure and an upper level trough. Plentiful moisture combined with strong frontogenetical forcing produced an narrow area of heavy snow. To the southwest of the heavy snow, rain fell along with a few thunderstorms. To the northeast of the snow band, very dry air caused a sharp cut-off to the snow. A narrow band of intense snow produced amounts of 8 to 12 inches, with some locations receiving over 2 inches per hour. The 10.2 inches of snow at Indianapolis set the daily snowfall record and became the second highest one day total for the month of March. Visibility at the Indianapolis International Airport was a quarter of a mile or less from about 2:30 PM to 4:30 PM EDT.
The national radar mosaic for the moment the first event began.
14 heavy snow. Local standard time, as filed.
Snowfall of 7 to 10.5 inches was reported from Marion County. The highest amount reported came in from one mile north-northeast of Clermont at 10.5 inches. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
Snowfall of 5 to just over 10 inches was reported from Johnson County. The highest amount reported came in from New Whiteland at 10.2 inches. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
A public report of 6.2 inches of snow came in from the Carmel area. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
A public report of 7.0 inches of snow came in from the Groveland area. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
Snowfall of 2 to 11 inches was reported from Morgan County. The highest amount reported came in from one mile east-northeast of Mooresville at 10.6 inches. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
An observer's report of 9.4 inches of snow was received from five miles south of Crawfordsville. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
Snowfall of 8 to 13 inches was reported from Hendricks County. The highest amount reported came in from three miles south of Brownsburg at 12.6 inches. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
Snowfall of 5 to 10 inches was reported from Boone County. The highest amount reported came in from one mile east of New Ross at 9.7 inches. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
A trained spotter's report of 7.0 inches of snow was received from two miles north-northeast of Bloomingdale. The Rockville area also saw snow of over 6.0 inches. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
An observer's report of 6.5 inches of snow was received from four miles west-northwest of Perrysville. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
A CoCoRaHS report of 6.5 inches was received from the Covington area. A 6.0 inch report was reported from a trained spotter in Attica. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
An observer's report of 7.1 inches of snow came in from the Morristown area. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
A few snowfall reports of 6.0 inches came in from the Rushville area. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
Snowfall of 3 to 8.5 inches was reported from Hancock County. The highest amount reported came in from one mile west-northwest of New Palestine at 8.5 inches. Owing partially to the event being well forecast and on a Saturday, no other impacts were reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2018Every state in 2018This day in weather historyWarnings in Indiana, March 2018
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 2026-09-24. Each event’s entry at NCEI: 761490, 761491, 761492, 761493, 761494, 761495, 761496, 761498, 761499, 761500, 761502, 761487, 761488, 761489.