Storm reports for September 21, 2007

IndependentNot affiliated with NOAA or the National Weather Service. Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology

← Sep 20, 2007 All 2007 storm days · September 2007 Sep 22, 2007 →

Other storms on September 21 →

On September 21, 2007, 12 hail, 48 damaging-wind and 1 tornado reports were logged across 7 states. The largest hail reported was 1.75″ (golf ball size) in Washburn County, WI.

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 (12)

Damage, injuries and deaths

National Weather Service offices recorded about $223,000 in property damage and $30,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (61 events in 7 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Howard County, IA (near Elma) · Thunderstorm wind 63 mph · $75,000
  “Two silos were damaged, a grain bin was caved in, and one end of a machine shed was lost.”
• Warren County, IA (near Norwalk) · Thunderstorm wind 85 mph · $10,000
  “A power pole was blown down in rural Warren County.”
• Black Hawk County, IA (near Dunkerton) · Thunderstorm wind 81 mph · $10,000
  “A power pole was blown down by high winds.”
• Trempealeau County, WI (near Galesville) · Thunderstorm wind 58 mph · $10,000
  “Tree fell on a car. No one was reported injured.”
• Sumter County, GA (near Leslie) · Thunderstorm wind 58 mph · $10,000
  “The Sumter County Emergency Management Director reported that thunderstorm wind gusts blew down several trees and power lines. In addition, the roof was blown off a porch of one home in the area.”
• Linn County, IA (near Cedar Rapids) · Thunderstorm wind 64 mph · $5,000
  “Winds estimated to be 65 mph blew down a tree and some power lines at the intersection of Wilson Ave and 6th Street in Cedar Rapids, IA. Relayed by KCRG TV. Time estimated.”

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