Slow moving thunderstorms brought very heavy rainfall and flash flooding to parts of Corson and Potter counties during the early morning hours.
Every event with a place to put it. 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 ABR wrote it up.
Slow moving thunderstorms brought very heavy rainfall and flash flooding to parts of Corson and Potter counties during the early morning hours.
The Bismarck radar (KBIS), 121 km away, was scanning. The volume nearest the first event began at 07:50 UTC.
2 flash flood. Local standard time, as filed.
Heavy rain caused flash flooding of the streets in and near Little Eagle.
Very heavy rains of 3 to 5 inches brought flash flooding to parts of western Potter county where several roads were flooded.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2018Every state in 2018This day in weather historyWarnings in South Dakota, July 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 2026-10-01. Each event’s entry at NCEI: 774951, 774952.