On the map: every storm report logged this day.
On the map
Storm reports for May 17, 1978
On May 17, 1978, 5 hail, 6 damaging-wind and 8 tornado reports were logged across 7 states.
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On May 17, 1978, 5 hail, 6 damaging-wind and 8 tornado reports were logged across 7 states. The largest hail reported was 1.75″ (golf ball size) in Larimer County, CO.
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 |
|---|---|---|---|---|
| CO | 1 | 1 | 4 | 1.75″ |
| LA | 3 | 2 | 0 | 1.75″ |
| TX | 1 | 1 | 1 | 1.75″ |
| FL | 0 | 1 | 1 | – |
| AL | 0 | 0 | 1 | – |
| WY | 0 | 0 | 1 | – |
| MS | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Hammond, LA | 23,426 | 1.75″ |
| Ponchatoula, LA | 7,735 | 1.75″ |
| Donaldsonville, LA | 6,945 | 0.75″ |
Hail reports (5)
| Time (UTC) | Size | Location |
|---|---|---|
| 17:00 | 1.75″ | Larimer County, CO |
| 18:10 | 1.75″ | Tangipahoa Parish, LA |
| 20:30 | 1.75″ | St. Charles Parish, LA |
| 00:30 | 1.75″ | Shackelford County, TX |
| 20:40 | 0.75″ | Ascension Parish, LA |
Damage, injuries and deaths
National Weather Service offices recorded about $258,000 in property damage and 1 injury from hail, thunderstorm wind and tornadoes across the US on this storm day (19 events in 7 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 |
|---|---|---|---|---|
| Kiowa County, CO | 1 | 1 | 0 | $3,000 |
| Adams County, CO | 1 | 0 | 0 | $250,000 |
| Boulder County, CO | 1 | 0 | 0 | $3,000 |
| Douglas County, CO | 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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