On the map: every storm report logged this day.
On the map
Storm reports for August 6, 1999
On August 6, 1999, 11 hail, 13 damaging-wind and 0 tornado reports were logged across 12 states.
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← Aug 5, 1999 All 1999 storm days · August 1999 Aug 7, 1999 →
On August 6, 1999, 11 hail, 13 damaging-wind and 0 tornado reports were logged across 12 states. The largest hail reported was 1.00″ (quarter size) in Umatilla County, OR.
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 | 5 | 0 | 1.00″ |
| ND | 3 | 0 | 0 | 0.75″ |
| IA | 0 | 3 | 0 | – |
| OR | 2 | 0 | 0 | 1.00″ |
| NE | 1 | 1 | 0 | 0.88″ |
| OK | 0 | 2 | 0 | – |
| WY | 1 | 0 | 0 | 1.00″ |
| CO | 1 | 0 | 0 | 0.75″ |
| CA | 1 | 0 | 0 | 0.75″ |
| ID | 1 | 0 | 0 | 0.75″ |
| FL | 0 | 1 | 0 | – |
| WA | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Ashland, NE | 3,369 | 0.88″ |
| Colorado Springs, CO | 493,554 | 0.75″ |
| Coeur d'Alene, ID | 57,355 | 0.75″ |
Hail reports (11)
| Time (UTC) | Size | Location |
|---|---|---|
| 23:10 | 1.00″ | Umatilla County, OR |
| 00:28 | 1.00″ | Crook County, WY |
| 02:15 | 1.00″ | Meade County, SD |
| 01:30 | 0.88″ | Saunders County, NE |
| 18:15 | 0.75″ | El Paso County, CO |
| 22:45 | 0.75″ | Trinity County, CA |
| 23:00 | 0.75″ | Richland County, ND |
| 23:02 | 0.75″ | Ransom County, ND |
| 00:00 | 0.75″ | Towner County, ND |
| 00:25 | 0.75″ | Gilliam County, OR |
| 09:00 | 0.75″ | Kootenai County, ID |
Damage, injuries and deaths
National Weather Service offices recorded about $28,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (24 events in 12 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Garvin County, OK | 1 | 0 | 0 | $15,000 |
| Mills County, IA | 1 | 0 | 0 | $8,000 |
| Yakima County, WA | 1 | 0 | 0 | $5,000 |
| Seminole County, OK | 1 | 0 | 0 | $0 |
What the National Weather Service wrote
- Mills County, IA (near Hastings) · Thunderstorm wind 63 mph · $8,000
“Three thousand bushel grain bin rolled over and heavily damaged.” - Yakima County, WA (near Yakima) · Thunderstorm wind · $5,000
“Strong winds from thunderstorms blew down around 100 trees along Highway 410 one mile west of the junction with Highway 12. Power lines were also downed. At the same time high winds peeled back a metal roof 9 miles west of the Highway 12 intersection.” - Meade County, SD (near Ellsworth Afb) · Thunderstorm wind 114 mph
“Measured on the northwest runway wind sensor.” - Meade County, SD (near Ellsworth Afb) · Thunderstorm wind 114 mph
“Measured on the southeast runway wind sensor.” - Mills County, IA (near Strahan) · Thunderstorm wind 60 mph
“Eight inch diameter tree limbs and power lines downed.” - Trinity County, CA (near Ruth) · Hail 0.75″
“Hail reported by US Forest Service ranger.”
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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