On the map: every storm report logged this day.
On the map
Storm reports for March 21, 1966
On March 21, 1966, 15 hail, 8 damaging-wind and 3 tornado reports were logged across 6 states.
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← Mar 19, 1966 All 1966 storm days · March 1966 Mar 22, 1966 →
On March 21, 1966, 15 hail, 8 damaging-wind and 3 tornado reports were logged across 6 states. The largest hail reported was 2.00″ (hen egg size) in Cass County, IL.
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 |
|---|---|---|---|---|
| IL | 5 | 3 | 1 | 2.00″ |
| WI | 1 | 4 | 1 | 1.00″ |
| IA | 4 | 0 | 1 | 2.00″ |
| MO | 4 | 0 | 0 | 1.50″ |
| KS | 1 | 0 | 0 | 1.75″ |
| MI | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Evanston, IL | 76,006 | 1.75″ |
| Skokie, IL | 65,850 | 1.75″ |
| Lincolnwood, IL | 13,055 | 1.75″ |
| Oskaloosa, IA | 11,575 | 1.50″ |
| Kansas City, MO | 516,032 | 1.25″ |
| Roeland Park, KS | 6,689 | 1.25″ |
| North Kansas City, MO | 5,630 | 1.25″ |
| Fairway, KS | 4,160 | 1.25″ |
| Mission Hills, KS | 3,521 | 1.25″ |
| Racine, WI | 78,057 | 1.00″ |
| Palmyra, MO | 3,644 | 1.00″ |
| Raytown, MO | 29,244 | 0.75″ |
Hail reports (15)
| Time (UTC) | Size | Location |
|---|---|---|
| 18:15 | 2.00″ | Cass County, IL |
| 18:15 | 2.00″ | Menard County, IL |
| 19:33 | 2.00″ | Louisa County, IA |
| 20:01 | 1.75″ | Rock Island County, IL |
| 23:55 | 1.75″ | Cook County, IL |
| 04:30 | 1.75″ | Douglas County, KS |
| 18:15 | 1.50″ | Mahaska County, IA |
| 18:30 | 1.50″ | Keokuk County, IA |
| 04:15 | 1.50″ | Jackson County, IA |
| 05:30 | 1.50″ | Caldwell County, MO |
| 05:23 | 1.25″ | Jackson County, MO |
| 16:00 | 1.00″ | Marion County, MO |
| 00:35 | 1.00″ | WI |
| 22:15 | 0.75″ | Ogle County, IL |
| 05:23 | 0.75″ | Jackson County, MO |
Damage, injuries and deaths
National Weather Service offices recorded about $5.3 million in property damage and 1 injury from hail, thunderstorm wind and tornadoes across the US on this storm day (27 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 |
|---|---|---|---|---|
| Walworth County, WI | 1 | 1 | 0 | $2.5 million |
| Racine County, WI | 1 | 0 | 0 | $2.5 million |
| Keokuk County, IA | 1 | 0 | 0 | $250,000 |
| Whiteside County, IL | 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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