On the map: every storm report logged this day.
On the map
Storm reports for August 3, 2013
On August 3, 2013, 56 hail, 21 damaging-wind and 8 tornado reports were logged across 7 states.
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On August 3, 2013, 56 hail, 21 damaging-wind and 8 tornado reports were logged across 7 states. The largest hail reported was 4.25″ (grapefruit size) in Powder River County, MT.
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 |
|---|---|---|---|---|
| MT | 24 | 7 | 1 | 4.25″ |
| CO | 16 | 7 | 7 | 4.00″ |
| WY | 12 | 3 | 0 | 2.50″ |
| NM | 3 | 0 | 0 | 0.88″ |
| NE | 0 | 2 | 0 | – |
| NC | 0 | 2 | 0 | – |
| VA | 1 | 0 | 0 | 1.00″ |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Wellington, CO | 12,100 | 2.75″ |
| Windsor, CO | 41,734 | 1.75″ |
| Severance, CO | 11,554 | 1.75″ |
| Eaton, CO | 5,839 | 1.75″ |
| Ault, CO | 2,660 | 1.75″ |
| Greeley, CO | 114,363 | 1.25″ |
| Evans, CO | 22,394 | 1.25″ |
| Timnath, CO | 10,848 | 1.00″ |
| Gillette, WY | 33,846 | 0.75″ |
Hail reports (56)
| Time (UTC) | Size | Location |
|---|---|---|
| 01:20 | 4.25″ | Powder River County, MT |
| 20:45 | 4.00″ | Larimer County, CO |
| 21:07 | 2.75″ | Larimer County, CO |
| 20:33 | 2.50″ | Laramie County, WY |
| 22:40 | 2.50″ | Petroleum County, MT |
| 22:55 | 2.50″ | Garfield County, MT |
| 01:59 | 2.50″ | Powder River County, MT |
| 22:55 | 2.00″ | Garfield County, MT |
| 20:44 | 1.75″ | Laramie County, WY |
| 20:55 | 1.75″ | Larimer County, CO |
| 21:17 | 1.75″ | Larimer County, CO |
| 21:20 | 1.75″ | Weld County, CO |
| 21:41 | 1.75″ | Weld County, CO |
| 22:16 | 1.75″ | Weld County, CO |
| 00:15 | 1.75″ | Sheridan County, WY |
| 00:57 | 1.75″ | Powder River County, MT |
| 01:13 | 1.75″ | Powder River County, MT |
| 01:38 | 1.75″ | Campbell County, WY |
| 01:52 | 1.75″ | Custer County, MT |
| 02:30 | 1.75″ | Custer County, MT |
| 21:21 | 1.50″ | Larimer County, CO |
| 01:35 | 1.50″ | Powder River County, MT |
| 21:21 | 1.25″ | Weld County, CO |
| 22:43 | 1.25″ | Weld County, CO |
| 23:15 | 1.25″ | Garfield County, MT |
| 23:30 | 1.25″ | Garfield County, MT |
| 00:15 | 1.25″ | Powder River County, MT |
| 02:05 | 1.25″ | Crook County, WY |
| 02:30 | 1.25″ | Custer County, MT |
| 05:14 | 1.25″ | Fergus County, MT |
| 19:25 | 1.00″ | Accomack County, VA |
| 20:32 | 1.00″ | Weld County, CO |
| 22:21 | 1.00″ | Weld County, CO |
| 22:25 | 1.00″ | Larimer County, CO |
| 22:30 | 1.00″ | Weld County, CO |
| 22:48 | 1.00″ | Weld County, CO |
| 22:53 | 1.00″ | Weld County, CO |
| 23:20 | 1.00″ | Garfield County, MT |
| 00:15 | 1.00″ | Big Horn County, MT |
| 00:35 | 1.00″ | Big Horn County, MT |
| 00:48 | 1.00″ | Judith Basin County, MT |
| 01:20 | 1.00″ | Sheridan County, WY |
| 01:30 | 1.00″ | Rosebud County, MT |
| 02:34 | 1.00″ | Cascade County, MT |
| 02:46 | 1.00″ | Crook County, WY |
| 03:45 | 1.00″ | Crook County, WY |
| 03:50 | 1.00″ | Campbell County, WY |
| 04:00 | 1.00″ | Powder River County, MT |
| 04:40 | 1.00″ | Crook County, WY |
| 22:13 | 0.88″ | Union County, NM |
| 00:05 | 0.88″ | Harding County, NM |
| 06:00 | 0.88″ | McCone County, MT |
| 21:15 | 0.75″ | Union County, NM |
| 23:30 | 0.75″ | Petroleum County, MT |
| 00:50 | 0.75″ | Campbell County, WY |
| 01:22 | 0.75″ | Campbell County, WY |
Damage, injuries and deaths
National Weather Service offices recorded about $25,000 in property damage and $40,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (85 events in 7 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Cherry County, NE | 1 | 0 | 0 | $10,000 |
| Campbell County, WY | 1 | 0 | 0 | $10,000 |
| Weld County, CO | 1 | 0 | 0 | $5,000 |
What the National Weather Service wrote
- Cherry County, NE (near Merriman) · Thunderstorm wind 58 mph · $10,000
“Wind driven hail knocked windows out of a home and damaged pasture land.” - Weld County, CO (near Gates) · Tornado EF0 · $5,000
“A tornado touched down briefly. Some damage was reported.” - Weld County, CO (near Erie) · Thunderstorm wind 68 mph
“A velodrome under construction was heavily damaged by heavy rain and high winds. The wind toppled the eastern third of the 250-meter cycling track. Bolts measuring one-half-inch thick by 7 1/2 inches in length were ripped out of concrete footers while 16-inch-wide trusses, collapsed under the force…” - Judith Basin County, MT (near Stanford) · Thunderstorm wind 64 mph
“Strong winds measuring 56KT (64MPH) were reported 3 miles S of Stanford, MT.” - Powder River County, MT (near Biddle) · Thunderstorm wind 64 mph
“A wind gust estimated at 65 mph was reported 10 miles north of Biddle.” - Thomas County, NE (near Thedford) · Thunderstorm wind 60 mph
“Pea to half inch diameter size hail accompanied strong winds.”
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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