Storm reports for July 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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Other storms on July 21 →

On July 21, 2021, 29 hail, 43 damaging-wind and 0 tornado reports were logged across 12 states. The largest hail reported was 2.00″ (hen egg size) in Granite County, MT. Radar estimated hail of 1 inch or larger over 353 square miles containing about 11,000 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 (29)

Damage, injuries and deaths

National Weather Service offices recorded about $774,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (72 events in 12 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Yuma County, AZ (near Tacna) · Thunderstorm wind 75 mph · $500,000
  “Multiple photos, videos, and media coverage show considerable damage around the small rural town of Tacna due to a microburst from a strong thunderstorm. Numerous trees were downed or broken. There were several downed or snapped power poles, causing a power outage to the area.”
• San Bernardino County, CA (near Amboy) · Thunderstorm wind 55 mph · $100,000
  “Thunderstorm winds blew down six power poles. Multiple vehicles were stuck.”
• Mohave County, AZ (near New Kingman-Butler) · Thunderstorm wind 55 mph · $75,000
  “Thunderstorm winds damaged fences, roofs, trees, power lines, and an awning.”
• District of Columbia, DC (near Bolling Afb) · Thunderstorm wind 69 mph · $50,000
  “A tree blew down onto a car in the 4700 block of First Street Southwest, briefly trapping five occupants. Other large branches were blown down and awning damage was reported in the area.”
• Prince George's County, MD (near Forest Hgts) · Thunderstorm wind 63 mph · $20,000
  “A tree blew down onto a residence in the 4800 block of Indian Head Highway. Several wires blew down in the area.”
• Mohave County, AZ (near Golden Valley) · Thunderstorm wind 55 mph · $10,000
  “Thunderstorm winds blew over two travel trailers in Golden Valley.”

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