On the map: every storm report logged this day.
On the map
Storm reports for August 7, 1977
On August 7, 1977, 8 hail, 15 damaging-wind and 2 tornado reports were logged across 11 states.
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On August 7, 1977, 8 hail, 15 damaging-wind and 2 tornado reports were logged across 11 states. The largest hail reported was 2.75″ (baseball size) in Benton County, IA.
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 |
|---|---|---|---|---|
| MO | 3 | 2 | 0 | 1.75″ |
| IA | 4 | 0 | 0 | 2.75″ |
| NE | 1 | 1 | 2 | 1.75″ |
| AZ | 0 | 3 | 0 | – |
| VA | 0 | 2 | 0 | – |
| IN | 0 | 2 | 0 | – |
| IL | 0 | 1 | 0 | – |
| CO | 0 | 1 | 0 | – |
| WI | 0 | 1 | 0 | – |
| NC | 0 | 1 | 0 | – |
| ID | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Vinton, IA | 4,962 | 2.75″ |
| Centralia, MO | 4,807 | 1.75″ |
| Eagle Grove, IA | 3,615 | 1.75″ |
Hail reports (8)
| Time (UTC) | Size | Location |
|---|---|---|
| 22:40 | 2.75″ | Benton County, IA |
| 20:50 | 1.75″ | Macon County, MO |
| 21:20 | 1.75″ | Grundy County, IA |
| 21:20 | 1.75″ | Macon County, MO |
| 22:30 | 1.75″ | Cheyenne County, NE |
| 22:40 | 1.75″ | Boone County, MO |
| 23:40 | 1.75″ | Wright County, IA |
| 02:00 | 1.75″ | Chickasaw County, IA |
Damage, injuries and deaths
National Weather Service offices recorded 26 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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