Storm reports for August 21, 2020

IndependentNot affiliated with NOAA or the National Weather Service. Source: NOAA Storm Prediction Center storm reports; NOAA MRMS radar hail estimates (MESH) via the Iowa Environmental Mesonet; 2020 Census housing units. Data through November 6, 2026. Methodology

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Other storms on August 21 →

On August 21, 2020, 13 hail, 19 damaging-wind and 1 tornado reports were logged across 11 states. The largest hail reported was 1.50″ (ping pong ball size) in Grant County, SD. Radar estimated hail of 1 inch or larger over 927 square miles containing about 5,600 homes.

Storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Colored areas are NOAA MRMS radar estimates of the largest hail (MESH) over the day, lower 48 states only; radar overestimates and underestimates size, so read it with the ground reports.

Storm reports by state

Cities with the largest radar-estimated hail

Counties by homes inside 1″+ radar-estimated hail

Homes are 2020 Census housing units and people are 2020 Census residents, counted by block group where its center of population lies under radar-estimated hail of 1 inch or larger.

Hail reports (13)

Damage, injuries and deaths

National Weather Service offices recorded about $1 million in property damage and $105,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (33 events in 11 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Travis County, TX (near Dodd City) · Thunderstorm wind 70 mph · $1 million
  “A thunderstorm produced wind gusts estimated at 80 mph that damaged the Lake Travis Marina and 14 boats. Some docks were blown into each other and metal roofing at the marina was damaged.”
• Roosevelt County, NM (near Bethel) · Thunderstorm wind 75 mph · $25,000
  “A trained spotter measured a 61 mph wind gust with a severe thunderstorm east of Floyd. These strong winds were also responsible for wind damage in the area. The siding on a home was damaged, and large tree limbs were broken. The thunderstorm was also responsible for damaging 120 acres of corn.”
• Rutland County, VT (near South Poultney) · Thunderstorm wind 58 mph · $10,000
  “Trees down along Route 30 near Lake Saint Catherine Golf course.”
• Rutland County, VT (near Middletown Spgs) · Thunderstorm wind 58 mph · $10,000
  “Trees and utility lines downed by thunderstorm winds near Route 140.”
• Dickinson County, MI (near Channing) · Thunderstorm wind 69 mph · $2,000
  “Several snapped trees one to one and a half feet in diameter were observed north of Channing. Time of the thunderstorm damage was estimated from radar.”
• Dickinson County, MI (near Randville) · Thunderstorm wind 63 mph · $1,000
  “A NWS employee observed a snapped tree along Highway M-95 south of Sagola. One-inch diameter hail was also observed.”

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