On the map: every storm report logged this day.
On the map
Storm reports for August 18, 1979
On August 18, 1979, 4 hail, 8 damaging-wind and 0 tornado reports were logged across 7 states.
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On August 18, 1979, 4 hail, 8 damaging-wind and 0 tornado reports were logged across 7 states. The largest hail reported was 1.75″ (golf ball size) in Boulder County, CO.
Storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Radar hail estimates start October 2019.
Storm reports by state
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| IL | 0 | 3 | 0 | – |
| CO | 2 | 0 | 0 | 1.75″ |
| KS | 1 | 1 | 0 | 1.75″ |
| IA | 1 | 1 | 0 | 1.00″ |
| NE | 0 | 1 | 0 | – |
| IN | 0 | 1 | 0 | – |
| TX | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Des Moines, IA | 213,096 | 1.00″ |
| Norwalk, IA | 15,396 | 1.00″ |
Hail reports (4)
| Time (UTC) | Size | Location |
|---|---|---|
| 21:00 | 1.75″ | Boulder County, CO |
| 05:10 | 1.75″ | Mitchell County, KS |
| 23:00 | 1.50″ | Lincoln County, CO |
| 22:40 | 1.00″ | Polk County, IA |
Damage, injuries and deaths
National Weather Service offices recorded 12 hail, wind or tornado events across the US on this storm day, with no damage estimate, injury or death entered. Before 1996 the database holds only tornado, hail and wind events, and damage was often entered as a range, so treat these figures as rough. Injuries and deaths are those the events caused directly.
Source: NOAA National Centers for Environmental Information (NCEI), Storm Events Database, as entered by National Weather Service offices; data through July 31, 2026. Damage is in dollars of the year, not adjusted for inflation.
Guides: What radar-estimated hail (MESH) is and isn't · Storm reports: preliminary vs final
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