On the map: every storm report logged this day.
On the map
Storm reports for June 15, 1978
On June 15, 1978, 20 hail, 21 damaging-wind and 9 tornado reports were logged across 7 states.
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On June 15, 1978, 20 hail, 21 damaging-wind and 9 tornado reports were logged across 7 states. The largest hail reported was 2.75″ (baseball size) in Powder River County, MT.
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 |
|---|---|---|---|---|
| ND | 12 | 6 | 3 | 2.75″ |
| SD | 4 | 6 | 6 | 2.75″ |
| MN | 0 | 6 | 0 | – |
| MT | 2 | 1 | 0 | 2.75″ |
| WY | 2 | 0 | 0 | 2.00″ |
| CA | 0 | 1 | 0 | – |
| WI | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Gillette, WY | 33,846 | 1.75″ |
| Pierre, SD | 13,788 | 1.00″ |
Hail reports (20)
| Time (UTC) | Size | Location |
|---|---|---|
| 23:00 | 2.75″ | Powder River County, MT |
| 01:30 | 2.75″ | Meade County, SD |
| 02:25 | 2.75″ | LaMoure County, ND |
| 02:25 | 2.75″ | Logan County, ND |
| 23:30 | 2.25″ | Custer County, MT |
| 20:00 | 2.00″ | Laramie County, WY |
| 20:15 | 1.75″ | Ward County, ND |
| 22:40 | 1.75″ | Campbell County, WY |
| 00:30 | 1.75″ | Adams County, ND |
| 00:40 | 1.75″ | Potter County, SD |
| 00:42 | 1.75″ | Stutsman County, ND |
| 01:46 | 1.75″ | Grant County, ND |
| 02:00 | 1.75″ | Stutsman County, ND |
| 02:38 | 1.75″ | Cass County, ND |
| 03:28 | 1.75″ | Emmons County, ND |
| 00:10 | 1.00″ | Hughes County, SD |
| 01:00 | 1.00″ | Brown County, SD |
| 04:30 | 1.00″ | McIntosh County, ND |
| 11:15 | 1.00″ | LaMoure County, ND |
| 02:25 | 0.75″ | Cass County, ND |
Damage, injuries and deaths
National Weather Service offices recorded about $1 million in property damage and 15 injuries from hail, thunderstorm wind and tornadoes across the US on this storm day (50 events in 7 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 |
|---|---|---|---|---|
| Brown County, SD | 1 | 15 | 0 | $250,000 |
| Hand County, SD | 1 | 0 | 0 | $250,000 |
| Marshall County, SD | 1 | 0 | 0 | $250,000 |
| Walworth County, SD | 1 | 0 | 0 | $250,000 |
| Logan County, ND | 1 | 0 | 0 | $3,000 |
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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