Storm reports for August 15, 2011

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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Other storms on August 15 →

On August 15, 2011, 22 hail, 18 damaging-wind and 0 tornado reports were logged across 7 states. The largest hail reported was 2.00″ (hen egg size) in Bowman County, ND.

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

Cities with hail reported within 5 miles

Hail reports (22)

Damage, injuries and deaths

National Weather Service offices recorded about $95,000 in property damage and $325,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (40 events in 7 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Lincoln County, WY (near Grover) · Hail 1.00″ · $50,000
  “One inch diameter hail dented vehicles, broke a few windows, and punched holes in the siding of some homes around Grover.”
• Dunn County, ND (near Emerson) · Hail 1.75″ · $35,000
  “The large hail resulted in broken windows and damage to a vehicle.”
• Lincoln County, WY (near Afton Muni Arpt) · Hail 1.00″ · $10,000
  “A trained spotter northwest of Afton reported hail to the size of quarters. Hail of the same size damaged at least four county-owned vehicles parked in Afton.”
• Burleigh County, ND (near Ft Lincoln) · Thunderstorm wind 70 mph
  “Heavy rain accompanied the strong winds.”
• Powder River County, MT (near Moorhead) · Thunderstorm wind 64 mph
  “A wind gust of 65 mph was estimated 4 miles southeast of Moorhead.”
• Hettinger County, ND (near Regent) · Thunderstorm wind 64 mph
  “Pea size hail accompanied the 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.

Guides: What radar-estimated hail (MESH) is and isn't · Storm reports: preliminary vs final