Storm reports for July 20, 2004

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

← Jul 19, 2004 All 2004 storm days · July 2004 Jul 21, 2004 →

Other storms on July 20 →

On July 20, 2004, 54 hail, 38 damaging-wind and 0 tornado reports were logged across 11 states. The largest hail reported was 3.00″ (teacup size) in Miner 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 (54)

Damage, injuries and deaths

National Weather Service offices recorded about $625,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (92 events in 11 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Jo Daviess County, IL (near Galena) · Hail 2.50″ · $240,000
  “Also reported by law enforcement and the general public. Hail ranged in size from 1.50 inches to 2.50 inches.”
• Lake County, SD (near Madison) · Thunderstorm wind 90 mph · $200,000
  “Thunderstorm winds damaged businesses and blew down road signs, as well as power poles and lines. Numerous trees were damaged and uprooted. Most of the damage was localized over a few blocks.”
• Marshall County, KS (near Waterville) · Thunderstorm wind 69 mph · $30,000
  “Strong winds blew down 13 power line poles near Waterville.”
• Ochiltree County, TX (near Perryton) · Thunderstorm wind 81 mph · $28,000
  “Steel pole barn damaged...power poles broken...and a heavy wooden play system damaged on County Road 17 about two to three miles north of State Highway 15.”
• Marshall County, KS (near Waterville) · Thunderstorm wind 75 mph · $15,000
  “Strong winds blew the roof off of a warehouse in Waterville. Trees were also blow over, one knocking off a street light.”
• Jo Daviess County, IL (near Galena) · Hail 1.00″ · $14,000
  “Also reported by law enforcement. Hail ranged from 0.88 inches to 1 inch.”

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