Storm reports for August 23, 2018

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 23 →

On August 23, 2018, 31 hail, 19 damaging-wind and 2 tornado reports were logged across 5 states. The largest hail reported was 3.00″ (teacup size) in Walworth 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 (31)

Damage, injuries and deaths

National Weather Service offices recorded about $33,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (52 events in 5 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Maricopa County, AZ (near Scottsdale Muni) · Thunderstorm wind 70 mph · $30,000
  “Thunderstorms with strong damaging outflow winds moved across the northern portion of the greater Phoenix area during the evening hours on August 23rd; one of the stronger storms affected north Scottsdale.”
• Maricopa County, AZ (near Phoenix Turf Arpt) · Thunderstorm wind 70 mph · $3,000
  “Thunderstorms with strong, damaging outflow winds moved across the northern portions of the greater Phoenix metropolitan area during the early evening hours on August 23rd. Some of the storms affected communities such as Deer Valley and north Phoenix.”
• Pennington County, SD (near Rapid City) · Hail 1.75″
  “The combination of large hail and strong wind gusts damaged vehicles.”
• Prairie County, MT (near Mildred) · Hail 1.00″
  “Public reported hail up to the size of quarters and heavy rain.”
• Garfield County, UT (near Cannonville) · Hail 1.00″
  “Quarter-sized hail was reported in Cannonville.”
• Kane County, UT (near Glen Cnyn Bsn Arpt) · Hail 0.88″
  “Nickel-sized hail was reported at Kodachrome Basin State Park.”

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