Storm reports for July 21, 2010

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 July 21 →

On July 21, 2010, 118 hail, 290 damaging-wind and 10 tornado reports were logged across 26 states. The largest hail reported was 2.00″ (hen egg size) in Sullivan County, NY.

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 (118)

Damage, injuries and deaths

National Weather Service offices recorded about $5.2 million in property damage, $490,000 in crop damage and 6 injuries from hail, thunderstorm wind and tornadoes across the US on this storm day (419 events in 26 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Sioux County, IA (near Maurice) · Thunderstorm wind 100 mph · $200,000 · 4 injuries
  “Thunderstorm winds destroyed one home and damaged at least 20 others. Homes that were damaged had broken windows, had parts of roofs and siding that were blown away, or had roofs damaged by falling trees. tree damage was widespread, and there were also downed power lines and power outages.”
• Grafton County, NH (near North Dorchester) · Thunderstorm wind 81 mph · 1 injury
  “Winds from a severe thunderstorm downed trees in the towns of Wentworth and Dorchester. Dozens of trees were snapped or uprooted in a non-continuous path. Winds were estimated to have gusted between 80 and 90 mph.”
• Cumberland County, ME (near Scarborough) · Thunderstorm wind 58 mph · 1 injury
  “A severe thunderstorm downed a tree on a vehicle in Scarborough with minor injuries resulting.”
• Pocahontas County, IA (near Westview) · Tornado EF1 · $1 million
  “Tornado touched down 1 mile south of Pocahontas near Highway 4. It traveled 2.6 miles on the ground and lilfted northeast of the golf course and prior to the airport. Peak wind was estimated to be 100 MPH.”
• Naugatuck Valley Planning Region, CT (near Bristol) · Tornado EF1 · $565,000
  “A brief tornado touchdown occurred on the east side of Rockwell Park and had an intermittent damage path, mostly at the tree top level, to the end of High Street. Straight line winds appeared to be the main cause of damage in Bristol, however, damage from a small, brief tornado was also evident.”
• Orange County, VT (near East Brookfield) · Thunderstorm wind 86 mph · $350,000
  “Hundreds of 40-50 foot pines, large mature maples and other trees snapped or uprooted in a northwest to southeast direction along East Hill and Chelsea roads along the Brookfield/Chelsea town line centered off Woods road.”

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