Storm reports for September 13, 2021

Numbers you can quote

On September 13, 2021, about 83,400 homes were inside radar-estimated hail of 1 inch or larger across 22 counties; the most were in Oakland County, MI (about 33,900).

• About 33,900 homes in Oakland County, MI, were inside radar-estimated hail of 1 inch or larger on September 13, 2021. Swath image

Homes are 2020 Census housing units in block groups whose center of population lay inside NOAA MRMS radar-estimated hail (MESH) of 1 inch or larger during the storm day (7 a.m. to 7 a.m. Eastern). These are radar estimates of hail size, not damage counts. More same-day numbers

Cite: National Storms. “Storm reports for September 13, 2021.” https://nationalstorms.com/storms/2021-09-13/. Data through November 6, 2026. License: CC BY 4.0.

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 September 13 →

On September 13, 2021, 11 hail, 41 damaging-wind and 0 tornado reports were logged across 7 states. The largest hail reported was 1.50″ (ping pong ball size) in Sac County, IA. Radar estimated hail of 1 inch or larger over 606 square miles containing about 83,000 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 (11)

Damage, injuries and deaths

National Weather Service offices recorded about $85,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (52 events in 7 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Columbia County, PA (near Orangeville) · Thunderstorm wind 60 mph · $15,000
  “A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees, including some on homes, in Orangeville.”
• Columbia County, PA (near Pine Summit) · Thunderstorm wind 60 mph · $14,000
  “A severe thunderstorm producing winds estimated near 60 mph knocked down several trees and damaged a roof in far northwestern Columbia County.”
• Schuylkill County, PA (near Quakake) · Thunderstorm wind 70 mph · $10,000
  “A severe thunderstorm producing winds estimated near 70 mph knocked down numerous trees and produced widespread crop damage northwest of Hometown.”
• Luzerne County, PA (near Rock Glen) · Thunderstorm wind 58 mph · $5,000
  “Strong thunderstorm winds uprooted multiple large trees. Power outages also being reported.”
• Venango County, PA (near Bully Hill) · Thunderstorm wind 58 mph · $5,000
  “Power lines were downed on Belmar Road in Ajax.”
• Lycoming County, PA (near Loyalsockville) · Thunderstorm wind 60 mph · $4,000
  “A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires along Wallis Run 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