Storm reports for April 21, 2021

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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On April 21, 2021, 17 hail, 61 damaging-wind and 2 tornado reports were logged across 9 states. The largest hail reported was 1.00″ (quarter size) in Berks County, PA. Radar estimated hail of 1 inch or larger over 5 square miles containing about 1,400 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

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 (17)

Damage, injuries and deaths

National Weather Service offices recorded about $312,000 in property damage and $5,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (80 events in 9 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• St. Mary's County, MD (near Clements) · Thunderstorm wind 90 mph · $88,000
  “On April 22, 2021, a team from NOAA/NWS Baltimore/Washington Weather Forecast Office surveyed storm damage from storms that occurred near the town of Clements in St. Mary's County MD.||The team found scattered-to-numerous instances of tree and structural damage over a path of several miles.”
• Hampden County, MA (near Ingleside) · Thunderstorm wind 72 mph · $60,000
  “A microburst caused extensive tree damage along a path from Chicopee Street to the Westover Golf Club. At 4:10 PM EDT, the ASOS at Westover Airport (KCEF) recorded a gust of 72 mph. A tree was down on cars on Chicopee St. Trees and wires were down on Beverly St. and Deslories Ave.”
• Madison County, IN (near Anderson) · Thunderstorm wind 69 mph · $50,000
  “A brief microburst brought significant damage to a small section of downtown Anderson. At 14th Street and Meridian Avenue a window was blown out. An RV was flipped over in parking lot near the intersection 32nd Street and Scatter Field. Nearby a roof was blown off of a warehouse.”
• Dutchess County, NY (near Amenia) · Tornado EF1 · $45,000
  “A tornado briefly touched down just south of Amenia, New York |and moved north northeast into the village. The tornado started|near the intersection of Powder House Road and Ohandley Drive and|caused sporadic damage along its path length.”
• Hampden County, MA (near Agawam) · Thunderstorm wind 58 mph · $10,000
  “In Agawam, a pole and wires down on a car on RT 159.”
• Capitol Planning Region, CT (near West Suffield) · Thunderstorm wind 58 mph · $8,000
  “Three miles northwest of Suffield, power poles were snapped and 3 inch tree limbs were down.”

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