Storm reports for August 21, 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 21 →

On August 21, 2011, 75 hail, 197 damaging-wind and 2 tornado reports were logged across 31 states. The largest hail reported was 3.00″ (teacup size) in Sarpy County, NE.

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 (75)

Damage, injuries and deaths

National Weather Service offices recorded about $1.2 million in property damage, $1 million in crop damage and 6 injuries from hail, thunderstorm wind and tornadoes across the US on this storm day (275 events in 31 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Chesterfield County, SC (near Cheraw) · Thunderstorm wind 63 mph · $80,000 · 4 injuries
  “Sheriff reported trees down in Cheraw... some on vehicles and some on homes.”
• Chesterfield County, SC (near Chesterfield) · Thunderstorm wind 69 mph · $80,000 · 2 injuries
  “Emergency Manager reported trees down around the county and in the town of Chesterfield. Some trees fell on vehicles and a few on homes. A garage door was ripped off a building and blown 300 yds away. Street flooding also occurred.”
• Wayne County, NY (near Savannah) · Tornado EF2 · $150,000
  “A tornado touched down in Savannah in Wayne County the continued east northeast into Cayuga County.”
• Halifax County, VA (near Sign Rock) · Thunderstorm wind 69 mph · $100,000
  “Thunderstorm winds blew a large roof off a hay barn at Locust Level farm.”
• Cayuga County, NY (near Spring Lake) · Tornado EF2 · $100,000
  “A tornado moved from Wayne county to Conquest in northern Cayuga county.”
• Rutland County, VT (near Wells) · Thunderstorm wind 81 mph · $75,000
  “NWS Storm survey team found more than 100 trees, snapped or uprooted from the New York border near Granville into North and West Pawlet. The damage encompassed a nearly 1 mile long by 1/2 mile wide swath of damage.”

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