On the map: every storm report logged this day.
On the map
Storm reports for August 21, 2007
On August 21, 2007, 97 hail, 196 damaging-wind and 0 tornado reports were logged across 13 states.
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· As you type, the text is sent to Google to suggest addresses.IndependentNot affiliated with NOAA or the National Weather Service. Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
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On August 21, 2007, 97 hail, 196 damaging-wind and 0 tornado reports were logged across 13 states. The largest hail reported was 6.88″ (softball size) in Charles Mix 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 |
|---|---|---|---|---|
| NC | 1 | 80 | 0 | 1.75″ |
| VA | 3 | 58 | 0 | 1.75″ |
| NE | 48 | 5 | 0 | 2.75″ |
| IA | 3 | 18 | 0 | 1.00″ |
| WI | 1 | 18 | 0 | 0.75″ |
| SD | 15 | 0 | 0 | 6.88″ |
| KS | 13 | 1 | 0 | 2.50″ |
| IL | 2 | 9 | 0 | 1.00″ |
| MN | 7 | 0 | 0 | 1.75″ |
| TN | 1 | 4 | 0 | 1.00″ |
| CO | 3 | 0 | 0 | 1.75″ |
| MI | 0 | 2 | 0 | – |
| MO | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Austin, MN | 26,690 | 1.75″ |
| Vermillion, SD | 11,877 | 1.00″ |
| Lexington, NE | 11,205 | 1.00″ |
| McCook, NE | 7,212 | 1.00″ |
| Yankton, SD | 15,670 | 0.88″ |
| Colby, KS | 5,539 | 0.88″ |
| Goodland, KS | 4,394 | 0.88″ |
| O'Neill, NE | 3,578 | 0.88″ |
| Sioux City, IA | 86,875 | 0.75″ |
| Sun Prairie, WI | 39,253 | 0.75″ |
| South Sioux City, NE | 13,910 | 0.75″ |
Hail reports (97)
| Time (UTC) | Size | Location |
|---|---|---|
| 22:55 | 6.88″ | Charles Mix County, SD |
| 22:46 | 6.13″ | Charles Mix County, SD |
| 23:25 | 2.75″ | Frontier County, NE |
| 22:55 | 2.50″ | Rawlins County, KS |
| 23:50 | 2.50″ | Sherman County, NE |
| 00:00 | 2.50″ | Sherman County, NE |
| 01:05 | 2.00″ | Custer County, NE |
| 18:45 | 1.75″ | Nelson County, VA |
| 22:17 | 1.75″ | Red Willow County, NE |
| 22:42 | 1.75″ | Charles Mix County, SD |
| 22:59 | 1.75″ | Bon Homme County, SD |
| 23:13 | 1.75″ | Douglas County, SD |
| 23:15 | 1.75″ | Frontier County, NE |
| 23:35 | 1.75″ | Buffalo County, NE |
| 00:12 | 1.75″ | Wheeler County, NE |
| 00:29 | 1.75″ | Yankton County, SD |
| 00:45 | 1.75″ | Howard County, NE |
| 00:48 | 1.75″ | Kit Carson County, CO |
| 00:48 | 1.75″ | Greeley County, NE |
| 00:50 | 1.75″ | Lenoir County, NC |
| 01:08 | 1.75″ | Frontier County, NE |
| 01:35 | 1.75″ | Boone County, NE |
| 02:04 | 1.75″ | Mower County, MN |
| 00:28 | 1.50″ | Cheyenne County, CO |
| 23:00 | 1.25″ | Frontier County, NE |
| 02:16 | 1.25″ | Gosper County, NE |
| 19:40 | 1.00″ | Sevier County, TN |
| 22:40 | 1.00″ | Charles Mix County, SD |
| 22:45 | 1.00″ | Dawson County, NE |
| 23:00 | 1.00″ | Gosper County, NE |
| 23:03 | 1.00″ | Douglas County, SD |
| 23:13 | 1.00″ | Rawlins County, KS |
| 23:15 | 1.00″ | Holt County, NE |
| 23:22 | 1.00″ | Charles Mix County, SD |
| 23:35 | 1.00″ | Phelps County, NE |
| 23:35 | 1.00″ | Dawson County, NE |
| 23:40 | 1.00″ | Holt County, NE |
| 23:45 | 1.00″ | Buffalo County, NE |
| 00:13 | 1.00″ | Frontier County, NE |
| 00:24 | 1.00″ | Knox County, NE |
| 00:41 | 1.00″ | Dawson County, NE |
| 00:49 | 1.00″ | Yankton County, SD |
| 00:51 | 1.00″ | Dawson County, NE |
| 00:51 | 1.00″ | Garfield County, NE |
| 01:01 | 1.00″ | Logan County, KS |
| 01:03 | 1.00″ | Valley County, NE |
| 01:14 | 1.00″ | Wallace County, KS |
| 01:15 | 1.00″ | Clay County, SD |
| 01:15 | 1.00″ | Garfield County, NE |
| 01:40 | 1.00″ | Freeborn County, MN |
| 01:52 | 1.00″ | Gosper County, NE |
| 01:55 | 1.00″ | Mower County, MN |
| 01:59 | 1.00″ | Boone County, NE |
| 02:12 | 1.00″ | Mower County, MN |
| 02:25 | 1.00″ | Dawson County, NE |
| 02:27 | 1.00″ | Mower County, MN |
| 02:45 | 1.00″ | Red Willow County, NE |
| 03:10 | 1.00″ | Sherman County, KS |
| 03:28 | 1.00″ | Sherman County, KS |
| 05:50 | 1.00″ | Clay County, IA |
| 07:22 | 1.00″ | Carroll County, IL |
| 07:26 | 1.00″ | Carroll County, IL |
| 11:00 | 1.00″ | Lincoln County, NE |
| 18:27 | 0.88″ | Carroll County, VA |
| 18:44 | 0.88″ | Wythe County, VA |
| 22:10 | 0.88″ | Charles Mix County, SD |
| 22:16 | 0.88″ | Rawlins County, KS |
| 22:23 | 0.88″ | Sherman County, KS |
| 22:30 | 0.88″ | Sherman County, KS |
| 22:35 | 0.88″ | Charles Mix County, SD |
| 22:37 | 0.88″ | Holt County, NE |
| 23:40 | 0.88″ | Charles Mix County, SD |
| 23:41 | 0.88″ | Gosper County, NE |
| 23:45 | 0.88″ | Knox County, NE |
| 23:45 | 0.88″ | Dawson County, NE |
| 00:11 | 0.88″ | Kit Carson County, CO |
| 00:15 | 0.88″ | Thomas County, KS |
| 00:23 | 0.88″ | Garfield County, NE |
| 00:31 | 0.88″ | Yankton County, SD |
| 00:58 | 0.88″ | Sherman County, KS |
| 01:25 | 0.88″ | Dawson County, NE |
| 01:45 | 0.88″ | Platte County, NE |
| 02:24 | 0.88″ | Mower County, MN |
| 03:05 | 0.88″ | Cherokee County, IA |
| 11:00 | 0.88″ | Cherry County, NE |
| 11:50 | 0.88″ | Logan County, NE |
| 22:08 | 0.75″ | Sherman County, KS |
| 22:38 | 0.75″ | Sherman County, KS |
| 22:50 | 0.75″ | Red Willow County, NE |
| 23:15 | 0.75″ | Gosper County, NE |
| 00:23 | 0.75″ | Waseca County, MN |
| 00:34 | 0.75″ | Frontier County, NE |
| 00:40 | 0.75″ | Cedar County, NE |
| 01:05 | 0.75″ | Woodbury County, IA |
| 01:40 | 0.75″ | Boone County, NE |
| 01:42 | 0.75″ | Boone County, NE |
| 06:25 | 0.75″ | Dane County, WI |
Damage, injuries and deaths
National Weather Service offices recorded about $1.6 million in property damage, $8.4 million in crop damage and 8 injuries from hail, thunderstorm wind and tornadoes across the US on this storm day (293 events in 13 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Wake County, NC | 1 | 8 | 0 | – |
| Sauk County, WI | 3 | 0 | 0 | $300,000 |
| Columbia County, WI | 3 | 0 | 0 | $150,000 |
| Iowa County, WI | 2 | 0 | 0 | $150,000 |
| Frontier County, NE | 4 | 0 | 0 | $135,000 |
| Humboldt County, IA | 4 | 0 | 0 | $125,000 |
| Dane County, WI | 2 | 0 | 0 | $100,000 |
| Gosper County, NE | 4 | 0 | 0 | $85,000 |
| Pocahontas County, IA | 4 | 0 | 0 | $60,000 |
| Sherman County, NE | 2 | 0 | 0 | $50,000 |
| Vernon County, WI | 5 | 0 | 0 | $31,000 |
| Washington County, VA | 2 | 0 | 0 | $30,000 |
What the National Weather Service wrote
- Wake County, NC (near Raleigh) · Thunderstorm wind 58 mph · 8 injuries
“A spotter reported several trees down at the Walnut Creek Amphitheatre. A roof was also blown off of an outdoor shelter at the amphitheatre.” - Sauk County, WI (near Reedsburg) · Thunderstorm wind 75 mph · $100,000
“Powerful thunderstorm wind gusts to 65 knots (75 mph) toppled many trees and damaged several power-lines.” - Sauk County, WI (near Lake Delton) · Thunderstorm wind 75 mph · $100,000
“Powerful thunderstorm wind gusts to 65 knots (75 mph) toppled many trees and damaged several power-lines.” - Iowa County, WI (near Avoca) · Thunderstorm wind 75 mph · $100,000
“Powerful thunderstorm wind gusts to 65 knots (75 mph) toppled many trees and damaged several power-lines.” - Frontier County, NE (near Eustis) · Hail 1.75″ · $55,000
“Hail was reported to be bouncing 4 feet off the ground. The large hail broke numerous windows.” - Humboldt County, IA (near Bradgate) · Thunderstorm wind 70 mph · $50,000
“High winds blew down outbuildings, grain bins, and trees.”
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.
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