On the map: every storm report logged this day.
On the map
Storm reports for August 21, 1999
On August 21, 1999, 3 hail, 2 damaging-wind and 0 tornado reports were logged across 5 states.
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← Aug 20, 1999 All 1999 storm days · August 1999 Aug 22, 1999 →
On August 21, 1999, 3 hail, 2 damaging-wind and 0 tornado reports were logged across 5 states. The largest hail reported was 1.00″ (quarter size) in Pennington County, SD.
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 | 1 | 0 | 0 | 1.00″ |
| MT | 1 | 0 | 0 | 0.75″ |
| ID | 1 | 0 | 0 | 0.75″ |
| ND | 0 | 1 | 0 | – |
| GA | 0 | 1 | 0 | – |
Hail reports (3)
| Time (UTC) | Size | Location |
|---|---|---|
| 19:20 | 1.00″ | Pennington County, SD |
| 20:20 | 0.75″ | Deer Lodge County, MT |
| 22:00 | 0.75″ | Butte County, ID |
Damage, injuries and deaths
National Weather Service offices recorded about $3,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (5 events in 5 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Brantley County, GA | 1 | 0 | 0 | $3,000 |
What the National Weather Service wrote
- Brantley County, GA (near Hortense) · Thunderstorm wind · $3,000
“Large trees and power lines were blown down.”
Event narratives from NWS Storm Data, shortened. Up to six per day, chosen by deaths, injuries, damage and size.
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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