Storm reports for May 11, 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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On May 11, 2011, 225 hail, 156 damaging-wind and 16 tornado reports were logged across 19 states. The largest hail reported was 4.25″ (grapefruit size) in Jefferson 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 (225)

Damage, injuries and deaths

National Weather Service offices recorded about $16.5 million in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (397 events in 19 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Taylor County, IA (near Lenox) · Tornado EF1 · $10 million
  “This was the second tornado to move through Lenox on this day. This tornado formed on the southwest edge of town and moved due north into town along State Highway 49. It removed a roof from an old house and produced tree damage along its path.”
• Taylor County, IA (near Lenox) · Tornado EF1 · $5 million
  “This was the first of two tornadoes that moved through Lenox on this day. The tornado formed on south side of Lenox then proceeded to move through town. Worst damage was on the south side of town where a roof was partially removed from a house.”
• Delaware County, OK (near Bernice) · Tornado EF1 · $250,000
  “A tornado severely damaged a marina, damaged a number of boats, damaged a metal building, rolled trailers, and uprooted a number of trees. Maximum estimated wind in the tornado based on this damage was about 100 mph.”
• Grayson County, TX (near Whitesboro) · Thunderstorm wind 85 mph · $200,000
  “Thunderstorm winds blew a portion of a roof off a wood-framed residence, flipped a SUV on its side and destroyed 8 outbuildings in and near Whitesboro. A single-wide manufactured home was also turned upside down, and a third home sustained moderate roof damage and the garage door was bent.”
• Hamilton County, NE (near Kronborg) · Tornado EF1 · $150,000
  “The confirmed tornado touched down approximately 6 miles north of Hampton and tracked northward to approximately 5 miles south and 2 miles east of Hordville, where it then lifted. In total, this tornado overturned 3 irrigation pivots, destroyed 2 grain bins and downed 7 power poles.”
• Polk County, NE (near Osceola) · Tornado EF1 · $100,000
  “This confirmed tornado was witnessed by a number of spotters, including the Emergency Manager and Fire Chief. The initial touchdown was south of Osceola, but lifted as it approached the town.”

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