Hail, Sioux
- When
- August 21, 4:40 PM CST
- Where
- Sioux County
- Measured
- 1.75 in hail
- Coordinates
- 43.200, -96.420
Hail and Damaging Winds in Iowa, August 21, 1989
4 thunderstorm wind, 2 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 6
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.
Event by event
4 thunderstorm wind, 2 hail. Local standard time, as filed.
Thunderstorm Wind, Sioux
- When
- August 21, 5:05 PM CST
- Where
- Sioux County
- Measured
- 53 kt (61 mph)
- Coordinates
- 43.080, -96.180
Thunderstorm Wind, Sioux
- When
- August 21, 5:15 PM CST
- Where
- Sioux County
- Measured
- 50 kt (58 mph)
- Coordinates
- 43.070, -95.880
Thunderstorm Wind, O'Brien
- When
- August 21, 5:40 PM CST
- Where
- O'Brien County
- Measured
- 52 kt (60 mph)
- Coordinates
- 43.080, -95.830
Hail, Clay
- When
- August 21, 6:21 PM CST
- Where
- Clay County
- Measured
- 1 in hail
- Coordinates
- 42.920, -95.280
Thunderstorm Wind, Page
- When
- August 21, 11:00 PM CST
- Where
- Page County
- Measured
- 50 kt (58 mph)
- Coordinates
- 40.830, -95.300
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado and Hail in Kansas, August 21, 1989
- Hail and Damaging Winds in South Dakota, August 21, 1989
- Hail and Damaging Wind in North Dakota, August 21, 1989
- Hail and Damaging Winds in Minnesota, August 21, 1989
- Hail and Damaging Winds in Nebraska, August 21, 1989
- Damaging Winds in Maine, August 21, 1989
- Hail and Damaging Wind in Connecticut, August 21, 1989
- Tornado in Michigan, August 21, 1989
- Damaging Wind in Wisconsin, August 21, 1989
- Damaging Wind in Texas, August 21, 1989
More
Every storm in Iowa in 1989Every state in 1989This day in weather historyWarnings in Iowa, August 1989
Sources
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: 10026197, 10026198, 10026199, 10026200, 10026201, 10026202.