Storm reports for August 20, 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 20 →

On August 20, 2011, 32 hail, 87 damaging-wind and 1 tornado reports were logged across 20 states. The largest hail reported was 2.75″ (baseball size) in Lawrence County, MO.

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 (32)

Damage, injuries and deaths

National Weather Service offices recorded about $865,000 in property damage, 1 injury and 1 death from hail, thunderstorm wind and tornadoes across the US on this storm day (120 events in 20 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Bonneville County, ID (near Idaho Falls) · Thunderstorm wind 64 mph · $15,000 · 1 death
  “Early on August 21st a thunderstorm caused trees to into a house on Pioneer Road in Idaho Falls killing an 82 year old man in his bedroom. Trees were also downed on East Lincoln Road.”
• Sebastian County, AR (near Ft Smith) · Thunderstorm wind 75 mph · $20,000 · 1 injury
  “Strong thunderstorm wind blew out the windows of a local McDonalds restaurant on Highway 71 on the south side of town. Several trees were uprooted by the wind. One tree landed on two cars, resulting in head and neck injuries to a person in one of the vehicles.”
• Cleburne County, AR (near Heber Spgs) · Thunderstorm wind 70 mph · $100,000
  “Trees were blown down, with two of the trees landing on vehicles. A concrete picnic table at a motel was blown over a fence.”
• Panola County, TX (near Carthage) · Thunderstorm wind 69 mph · $100,000
  “A metal roof was blown off a building in the Carthage Downtown Square. A window was also blown out of a downtown building. A tree was downed on a home on North Street and Mary Street. Numerous other trees were downed throughout town.”
• Newton County, AR (near Fallsville) · Thunderstorm wind 60 mph · $80,000
  “Numerous trees were blown down along Arkansas 21. Three parked vehicles were crushed by falling trees.”
• Union Parish, LA (near Oakland) · Thunderstorm wind 69 mph · $75,000
  “Strong downburst winds removed the roof off a mobile home and collapsed the outside wall. Several other trees were snapped and or uprooted with one tree landing on a truck. There were no report of injuries.”

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