Storm reports for July 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 July 17 →

On July 17, 2011, 34 hail, 80 damaging-wind and 9 tornado reports were logged across 7 states. The largest hail reported was 2.75″ (baseball size) in McHenry County, ND.

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 (34)

Damage, injuries and deaths

National Weather Service offices recorded about $1.1 million in property damage, $780,000 in crop damage and 1 injury from hail, thunderstorm wind and tornadoes across the US on this storm day (123 events in 7 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• LaMoure County, ND (near Nortonville) · Tornado EF3 · $500,000 · 1 injury
  “A National Weather Service storm survey confirmed that an EF3 tornado touched down around seven miles southeast of Nortonville, then moved southeast before lifting six miles south southeast of Berlin. This was a long tracked tornado across parts of Russell, Wano, Henrietta, and Badger townships.”
• McHenry County, ND (near Velva) · Hail 2.75″ · $150,000
  “The large hail caused damage to area crops. The hail also damaged windows, siding, and vehicles. The damage amount is estimated.”
• Cochise County, AZ (near Willcox) · Thunderstorm wind 60 mph · $100,000
  “A microburst over downtown Willcox caused damage along Haskell Street. A tin roof was blown off one building while part of a roof was peeled off another. Several trees were downed including a large tree in Railroad Park.”
• Eddy County, ND (near New Rockford) · Hail 1.75″ · $100,000
  “Hail moved into the town of New Rockford where shingles, roofing, and vehicles received some damages.”
• St. Lawrence County, NY (near Massena) · Thunderstorm wind 69 mph · $25,000
  “Telephone poles and lines downed by thunderstorm winds.”
• St. Lawrence County, NY (near Potsdam) · Thunderstorm wind 63 mph · $25,000
  “Trees and power lines down throughout Potsdam.”

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