On the map: every storm report logged this day.
On the map
Storm reports for July 17, 1978
On July 17, 1978, 2 hail, 17 damaging-wind and 4 tornado reports were logged across 6 states.
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On July 17, 1978, 2 hail, 17 damaging-wind and 4 tornado reports were logged across 6 states. The largest hail reported was 1.75″ (golf ball size) in Pierce County, ND.
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 |
|---|---|---|---|---|
| SD | 1 | 8 | 1 | 1.50″ |
| ND | 1 | 3 | 0 | 1.75″ |
| NE | 0 | 3 | 1 | – |
| MN | 0 | 1 | 1 | – |
| WI | 0 | 2 | 0 | – |
| WA | 0 | 0 | 1 | – |
Hail reports (2)
| Time (UTC) | Size | Location |
|---|---|---|
| 02:18 | 1.75″ | Pierce County, ND |
| 23:10 | 1.50″ | Bennett County, SD |
Damage, injuries and deaths
National Weather Service offices recorded about $50,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (23 events in 6 states). 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.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Pennington County, MN | 1 | 0 | 0 | $25,000 |
| Webster County, NE | 1 | 0 | 0 | $25,000 |
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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