On the map: every storm report logged this day.
On the map
Storm reports for May 10, 1964
On May 10, 1964, 13 hail, 5 damaging-wind and 10 tornado reports were logged across 4 states.
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On May 10, 1964, 13 hail, 5 damaging-wind and 10 tornado reports were logged across 4 states. The largest hail reported was 3.00″ (teacup size) in Grady County, OK.
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 |
|---|---|---|---|---|
| OK | 11 | 3 | 8 | 3.00″ |
| TX | 1 | 1 | 0 | 2.00″ |
| KS | 1 | 0 | 1 | 1.75″ |
| AR | 0 | 1 | 1 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Moore, OK | 63,845 | 2.00″ |
| Purcell, OK | 6,938 | 2.00″ |
Hail reports (13)
| Time (UTC) | Size | Location |
|---|---|---|
| 20:15 | 3.00″ | Grady County, OK |
| 19:30 | 2.00″ | Navarro County, TX |
| 00:30 | 2.00″ | Oklahoma County, OK |
| 01:30 | 2.00″ | McClain County, OK |
| 18:30 | 1.75″ | Greeley County, KS |
| 21:30 | 1.25″ | Grady County, OK |
| 16:00 | 1.00″ | Greer County, OK |
| 00:00 | 1.00″ | Caddo County, OK |
| 01:00 | 1.00″ | Oklahoma County, OK |
| 22:00 | 0.75″ | Beaver County, OK |
| 22:50 | 0.75″ | Kiowa County, OK |
| 00:20 | 0.75″ | Grady County, OK |
| 01:30 | 0.75″ | Pottawatomie County, OK |
Damage, injuries and deaths
National Weather Service offices recorded about $55,000 in property damage and 1 injury from hail, thunderstorm wind and tornadoes across the US on this storm day (28 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 |
|---|---|---|---|---|
| Caddo County, OK | 1 | 1 | 0 | $25,000 |
| Cherokee County, OK | 1 | 0 | 0 | $25,000 |
| Sebastian County, AR | 1 | 0 | 0 | $3,000 |
| Okmulgee County, OK | 1 | 0 | 0 | $3,000 |
| Johnston County, OK | 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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