On the map: every storm report logged this day.
On the map
Storm reports for July 20, 1964
On July 20, 1964, 0 hail, 2 damaging-wind and 3 tornado reports were logged across 4 states.
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← Jul 19, 1964 All 1964 storm days · July 1964 Jul 21, 1964 →
On July 20, 1964, 0 hail, 2 damaging-wind and 3 tornado reports were logged across 4 states.
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 |
|---|---|---|---|---|
| MI | 0 | 1 | 1 | – |
| MT | 0 | 0 | 1 | – |
| MO | 0 | 0 | 1 | – |
| WI | 0 | 1 | 0 | – |
Damage, injuries and deaths
National Weather Service offices recorded about $28,000 in property damage and 1 injury from hail, thunderstorm wind and tornadoes across the US on this storm day (5 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 |
|---|---|---|---|---|
| Callaway County, MO | 1 | 1 | 0 | $3,000 |
| Alpena County, MI | 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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