Storm reports for July 21, 1999

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

← Jul 20, 1999 All 1999 storm days · July 1999 Jul 22, 1999 →

Other storms on July 21 →

On July 21, 1999, 55 hail, 68 damaging-wind and 2 tornado reports were logged across 20 states. The largest hail reported was 4.50″ (softball size) in Valley County, MT.

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 (55)

Damage, injuries and deaths

National Weather Service offices recorded about $1.8 million in property damage and $220,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (125 events in 20 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Grundy County, IL (near Minooka) · Thunderstorm wind 63 mph · $50,000
  “Two miles west of Minooka downed trees destroyed three manufactured homes, damaged several other homes , and caused extensive damage to a number of vehicles.”
• Whiteside County, IL (near Countywide) · Thunderstorm wind · $15,000
  “According to a newspaper account, thunderstorm winds blew the roofs off some cabins and damaged some mobile homes along the Rock River near Prophetstown.”
• Ottawa County, OH (near Countywide) · Thunderstorm wind · $10,000
  “Many trees were downed throughout the county. A barn was blown apart and scattered over a half mile area two miles north of Graytown near the intersection of Graytown Road and State Route 579.”
• Ramsey County, ND (near Penn) · Thunderstorm wind · $10,000
  “Large trees were blown down and several roofs had damage.”
• Breathitt County, KY (near Jackson) · Thunderstorm wind · $5,000
  “Strong winds blew portions of a roof off an apartment building. The roof pieces landed in an adjacent parking lot causing damage to a nearby vehicle. An off duty National Weather Service employee had significant water damage inside his apartment as well.”
• Sandusky County, OH (near Fremont) · Thunderstorm wind · $5,000
  “A few large trees and power lines were knocked down on the east side of Fremont.”

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