Hail, Webster
- When
- September 21, 8:15 AM CST
- Where
- Webster County
- Measured
- 1.75 in hail
- Coordinates
- 42.620, -94.100
Tornadoes and Hail in Iowa, September 21, 1973
11 hail, 11 thunderstorm wind, 3 tornado, 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
- $53,000
- Crop damage
- None recorded
- Events
- 25
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
11 hail, 11 thunderstorm wind, 3 tornado. Local standard time, as filed.
Tornado, Webster
- When
- September 21, 8:25 AM CST
- Where
- Webster County
- Rating
- F3
- Path length
- 2.3 mi
- Path width
- 143 yd
- Property damage
- $25,000
- Coordinates
- 42.530, -94.230
Hail, Hardin
- When
- September 21, 8:50 AM CST
- Where
- Hardin County
- Measured
- 1.75 in hail
- Coordinates
- 42.300, -93.300
Hail, Hardin
- When
- September 21, 9:14 AM CST
- Where
- Hardin County
- Measured
- 1.75 in hail
- Coordinates
- 42.370, -93.100
Hail, Franklin
- When
- September 21, 9:25 AM CST
- Where
- Franklin County
- Measured
- 1.75 in hail
- Coordinates
- 42.600, -93.400
Thunderstorm Wind, Franklin
- When
- September 21, 9:25 AM CST
- Where
- Franklin County
- Coordinates
- 42.600, -93.400
Hail, Tama
- When
- September 21, 9:30 AM CST
- Where
- Tama County
- Measured
- 2.75 in hail
- Coordinates
- 42.200, -92.470
Hail, Buchanan
- When
- September 21, 10:30 AM CST
- Where
- Buchanan County
- Measured
- 1.75 in hail
- Coordinates
- 42.420, -91.950
Thunderstorm Wind, Buchanan
- When
- September 21, 10:30 AM CST
- Where
- Buchanan County
- Coordinates
- 42.470, -91.880
Hail, Delaware
- When
- September 21, 10:45 AM CST
- Where
- Delaware County
- Measured
- 1 in hail
- Coordinates
- 42.350, -91.250
Thunderstorm Wind, Jones
- When
- September 21, 10:50 AM CST
- Where
- Jones County
- Coordinates
- 42.230, -91.200
Hail, Delaware
- When
- September 21, 11:00 AM CST
- Where
- Delaware County
- Measured
- 1.5 in hail
- Coordinates
- 42.470, -91.420
Hail, Dubuque
- When
- September 21, 11:00 AM CST
- Where
- Dubuque County
- Measured
- 1 in hail
- Coordinates
- 42.450, -90.930
Thunderstorm Wind, Delaware
- When
- September 21, 11:00 AM CST
- Where
- Delaware County
- Coordinates
- 42.470, -91.420
Thunderstorm Wind, Jackson
- When
- September 21, 11:40 AM CST
- Where
- Jackson County
- Coordinates
- 42.050, -90.400
Thunderstorm Wind, Clinton
- When
- September 21, 12:00 PM CST
- Where
- Clinton County
- Coordinates
- 41.830, -90.200
Hail, Franklin
- When
- September 21, 5:20 PM CST
- Where
- Franklin County
- Measured
- 1.75 in hail
- Coordinates
- 42.630, -93.250
Thunderstorm Wind, Franklin
- When
- September 21, 5:20 PM CST
- Where
- Franklin County
- Coordinates
- 42.630, -93.250
Tornado, Hardin
- When
- September 21, 6:00 PM CST
- Where
- Hardin County
- Rating
- F1
- Path width
- 33 yd
- Property damage
- $3,000
- Coordinates
- 42.250, -93.080
Hail, Black Hawk
- When
- September 21, 6:10 PM CST
- Where
- Black Hawk County
- Measured
- 2.75 in hail
- Coordinates
- 42.420, -92.450
Tornado, Tama
- When
- September 21, 7:30 PM CST
- Where
- Tama County
- Rating
- F1
- Path length
- 2 mi
- Path width
- 100 yd
- Property damage
- $25,000
- Coordinates
- 41.920, -92.580
Thunderstorm Wind, Linn
- When
- September 21, 7:45 PM CST
- Where
- Linn County
- Coordinates
- 42.200, -91.800
Thunderstorm Wind, Linn
- When
- September 21, 7:52 PM CST
- Where
- Linn County
- Measured
- 59 kt (68 mph)
- Coordinates
- 41.880, -91.700
Thunderstorm Wind, Dubuque
- When
- September 21, 8:10 PM CST
- Where
- Dubuque County
- Measured
- 53 kt (61 mph)
- Coordinates
- 42.400, -90.700
Thunderstorm Wind, Jackson
- When
- September 21, 8:15 PM CST
- Where
- Jackson County
- Coordinates
- 42.230, -90.700
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
- 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
More
Every storm in Iowa in 1973Every state in 1973This day in weather historyThe tornado archive for Iowa, 1973
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: 10013069, 10013070, 10013071, 10013072, 10013073, 10013074, 10013075, 10013076, 10013077, 10013078, 10013079, 10013080, 10013081, 10013082, 10013083, 10013084, 10013085, 10016079, 10016080, 10016081, 10014443, 10014444, 10014445, 10014446, 10014447.