Increased releases from upstream reservoirs to route heavy spring runoff downstream contributed to minor flooding between Fort Randall and Gavins Point Dam.
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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 FSD wrote it up.
Increased releases from upstream reservoirs to route heavy spring runoff downstream contributed to minor flooding between Fort Randall and Gavins Point Dam.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before the first event at Jul 21, 1:59 PM CST, 1 hour 1 minute earlier.
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</html>The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Minor flooding of mainly agricultural areas occurred as the Missouri River near Greenwood (gage site GRWS2) rose above flood stage on July 21. The river remained in minor flood through the end of the month.
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: 772471.