Storm reports for August 17, 2011

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

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Other storms on August 17 →

On August 17, 2011, 21 hail, 10 damaging-wind and 0 tornado reports were logged across 8 states. The largest hail reported was 2.75″ (baseball size) in Jackson County, SD.

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 (21)

Damage, injuries and deaths

National Weather Service offices recorded about $621,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (31 events in 8 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Jackson County, SD (near Belvidere) · Hail 2.75″ · $500,000
  “Large hail caused significant damage to vehicles on Interstate 90 between mile markers 170 and 174. Wind gusts reached 50 mph.”
• Mellette County, SD (near Cedar Butte) · Hail 2.75″ · $40,000
  “Large hail caused significant damage to the roof and windows of a house and vehicles.”
• Barry County, MO (near Butterfield) · Thunderstorm wind 60 mph · $1,000
  “A downed tree blocked both lanes of Highway U about three miles east of Butterfield.”
• Sedgwick County, KS (near Viola) · Thunderstorm wind 70 mph
  “Widespread reports of 70 mph winds and significant tree damage along the path was noted.”
• Butler County, KS (near Rose Hill) · Thunderstorm wind 70 mph
  “Several estimated wind speeds were reported along the path with some significant tree damage.”
• Pima County, AZ (near Greaterville) · Thunderstorm wind 62 mph
  “Trained spotter recorded a wind gust of 62 mph at his home near Patagonia Lake.”

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