On the map: every storm report logged this day.
On the map
Storm reports for July 18, 1963
On July 18, 1963, 12 hail, 15 damaging-wind and 5 tornado reports were logged across 12 states.
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On July 18, 1963, 12 hail, 15 damaging-wind and 5 tornado reports were logged across 12 states. The largest hail reported was 3.50″ (teacup size) in Lyon County, MN.
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 |
|---|---|---|---|---|
| SD | 2 | 3 | 1 | 2.00″ |
| IA | 2 | 3 | 0 | 1.75″ |
| MA | 2 | 1 | 1 | 2.00″ |
| MN | 2 | 1 | 0 | 3.50″ |
| NH | 1 | 0 | 2 | 1.00″ |
| IL | 0 | 3 | 0 | – |
| ND | 2 | 0 | 0 | 1.75″ |
| NE | 0 | 2 | 0 | – |
| MT | 1 | 0 | 0 | 1.00″ |
| SC | 0 | 0 | 1 | – |
| NY | 0 | 1 | 0 | – |
| KS | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Nashua, NH | 91,851 | 0.75″ |
Hail reports (12)
| Time (UTC) | Size | Location |
|---|---|---|
| 20:30 | 3.50″ | Lyon County, MN |
| 19:05 | 2.00″ | Brookings County, SD |
| 20:00 | 2.00″ | Middlesex County, MA |
| 23:50 | 1.75″ | Palo Alto County, IA |
| 23:50 | 1.75″ | Osceola County, IA |
| 02:00 | 1.75″ | Burleigh County, ND |
| 20:00 | 1.00″ | Lyon County, MN |
| 20:45 | 1.00″ | Rockingham County, NH |
| 23:00 | 1.00″ | Wibaux County, MT |
| 01:05 | 1.00″ | Stark County, ND |
| 20:20 | 0.75″ | Middlesex County, MA |
| 21:47 | 0.75″ | Pennington County, SD |
Damage, injuries and deaths
National Weather Service offices recorded about $328,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (32 events in 12 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 |
|---|---|---|---|---|
| Butte County, SD | 1 | 0 | 0 | $250,000 |
| Middlesex County, MA | 1 | 0 | 0 | $25,000 |
| Carroll County, NH | 1 | 0 | 0 | $25,000 |
| Sullivan County, NH | 1 | 0 | 0 | $25,000 |
| Berkeley County, SC | 1 | 0 | 0 | $3,000 |
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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