On the map: every storm report logged this day.
On the map
Storm reports for May 21, 1957
On May 21, 1957, 10 hail, 26 damaging-wind and 19 tornado reports were logged across 11 states.
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On May 21, 1957, 10 hail, 26 damaging-wind and 19 tornado reports were logged across 11 states. The largest hail reported was 2.50″ (tennis ball size) in Phelps County, MO. Tornadoes killed 15.
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 | 4 | 3 | 10 | 2.50″ |
| AR | 1 | 8 | 0 | 1.50″ |
| IL | 1 | 3 | 4 | 1.50″ |
| IN | 0 | 4 | 1 | – |
| KY | 0 | 3 | 1 | – |
| IA | 2 | 0 | 1 | 1.50″ |
| TN | 0 | 3 | 0 | – |
| OK | 1 | 1 | 0 | 1.75″ |
| MN | 0 | 0 | 2 | – |
| TX | 1 | 0 | 0 | 1.75″ |
| OH | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Rolla, MO | 20,660 | 2.50″ |
| Poteau, OK | 9,111 | 1.75″ |
| Fayetteville, AR | 103,134 | 1.50″ |
| Centralia, IL | 11,787 | 1.50″ |
| Farmington, AR | 10,473 | 1.50″ |
| Knoxville, IA | 7,440 | 1.50″ |
| Potosi, MO | 2,549 | 1.50″ |
| Jackson, MO | 15,929 | 1.00″ |
Hail reports (10)
| Time (UTC) | Size | Location |
|---|---|---|
| 20:15 | 2.50″ | Phelps County, MO |
| 20:40 | 1.75″ | Le Flore County, OK |
| 22:17 | 1.75″ | Hunt County, TX |
| 19:00 | 1.50″ | Marion County, IA |
| 19:25 | 1.50″ | Marion County, IA |
| 21:46 | 1.50″ | Clinton County, IL |
| 22:06 | 1.50″ | Washington County, MO |
| 23:30 | 1.50″ | Washington County, AR |
| 20:52 | 1.00″ | Cape Girardeau County, MO |
| 20:10 | 0.75″ | Phelps County, MO |
Damage, injuries and deaths
National Weather Service offices recorded about $77.2 million in property damage, 133 injuries and 15 deaths from hail, thunderstorm wind and tornadoes across the US on this storm day (61 events in 11 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 |
|---|---|---|---|---|
| St. Francois County, MO | 2 | 49 | 8 | $50 million |
| Carter County, MO | 1 | 75 | 7 | $250,000 |
| Lewis County, MO | 2 | 2 | 0 | $500,000 |
| Warrick County, IN | 1 | 2 | 0 | $25,000 |
| Chisago County, MN | 1 | 2 | 0 | $25,000 |
| Dent County, MO | 1 | 2 | 0 | $25,000 |
| Washington County, MO | 1 | 1 | 0 | $25 million |
| McDonough County, IL | 1 | 0 | 0 | $250,000 |
| Monroe County, IL | 1 | 0 | 0 | $250,000 |
| Union County, IL | 1 | 0 | 0 | $250,000 |
| Cedar County, IA | 1 | 0 | 0 | $250,000 |
| Taney County, MO | 1 | 0 | 0 | $250,000 |
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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