On the map: every storm report logged this day.
On the map
Storm reports for July 23, 1966
On July 23, 1966, 7 hail, 2 damaging-wind and 4 tornado reports were logged across 4 states.
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On July 23, 1966, 7 hail, 2 damaging-wind and 4 tornado reports were logged across 4 states. The largest hail reported was 2.75″ (baseball size) in Richland 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 |
|---|---|---|---|---|
| ND | 3 | 1 | 1 | 2.75″ |
| SD | 3 | 0 | 2 | 1.25″ |
| MN | 0 | 1 | 1 | – |
| NM | 1 | 0 | 0 | 1.00″ |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Wahpeton, ND | 8,115 | 2.75″ |
| Breckenridge, MN | 3,308 | 2.75″ |
| Moorhead, MN | 45,726 | 0.75″ |
| Dilworth, MN | 4,811 | 0.75″ |
Hail reports (7)
| Time (UTC) | Size | Location |
|---|---|---|
| 22:00 | 2.75″ | Richland County, ND |
| 00:30 | 1.25″ | Haakon County, SD |
| 21:30 | 1.00″ | Meade County, SD |
| 23:00 | 1.00″ | Union County, NM |
| 23:00 | 1.00″ | Barnes County, ND |
| 00:00 | 1.00″ | Roberts County, SD |
| 21:00 | 0.75″ | Clay County, ND |
Damage, injuries and deaths
National Weather Service offices recorded about $25,000 in property damage and 5 injuries from hail, thunderstorm wind and tornadoes across the US on this storm day (13 events in 4 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, SD | 1 | 5 | 0 | $25,000 |
| Becker County, MN | 1 | 0 | 0 | $0 |
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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