Where hail was reported

Reports came from 31 places in Franklin, MO, Madison, IL, St. Charles, MO, St. Louis, MO and Warren, MO, named as the National Weather Service described them.

• Chesterfield 9 reports, up to 2.00 in
• Harvester 9 reports, up to 2.50 in
• Weldon Spring 7 reports, up to 2.00 in
• New Haven 5 reports, up to 1.50 in
• Wildwood 5 reports, up to 1.75 in
• Cottleville 4 reports, up to 2.00 in
• Saint John 4 reports, up to 1.75 in
• Saint Peters 4 reports, up to 1.50 in
• Washington 4 reports, up to 1.75 in
• Bridgeton 2 reports, up to 1.00 in
• Dardenne Prairie 2 reports, up to 1.75 in
• Dutzow 2 reports, up to 1.75 in
• Mitchell 2 reports, up to 1.00 in
• New Melle 2 reports, up to 1.00 in
• O'Fallon 2 reports, up to 1.25 in
• Olivette 2 reports, up to 1.75 in
• Overland 2 reports, up to 1.25 in
• University City 2 reports, up to 2.00 in
• Clarkson Valley 1 report, up to 1.25 in
• Clayton 1 report, up to 1.50 in
• Creve Coeur 1 report, up to 1.00 in
• Defiance 1 report, up to 2.00 in
• Frontenac 1 report, up to 1.00 in
• Gerald 1 report, up to 2.00 in
• Glen Carbon 1 report, up to 1.00 in
• Granite City 1 report, up to 1.00 in
• Holstein 1 report, up to 1.00 in
• Marthasville 1 report, up to 1.75 in
• Normandy 1 report, up to 2.50 in
• Town And Country 1 report, up to 1.25 in
• Woodson Terrace 1 report, up to 1.00 in

Every hail report logged that day

Times are Central Daylight Time. Sizes are in inches, as reported. The comment is the National Weather Service's text as published in the Storm Prediction Center's daily log.

What NEXRAD radar recorded inside the metro

665 signatures from 6 radars fell inside the metro's counties on this local date, counting every cell the algorithm rated from a 10% to a 100% chance of hail; 171 were rated 100% and 46 had a maximum expected size of 2 inches or more.

Each radar that scans a storm writes its own signature about every 4 to 6 minutes, so one storm produces many rows and overlapping radars count it more than once. The raw rows for this day are in NOAA's Severe Weather Data Inventory.

Check an address for May 16, 2025

See, free, how many hail signatures NOAA recorded within 1, 3 and 5 miles of one address that day and the nearest spotter report. The full report is $19.

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Check the hail on my date

Spotter reports come from the Storm Prediction Center's preliminary daily logs, grouped here by local calendar date (Central Daylight Time) and by county: a report counts for St. Louis when its coordinates fall inside one of the metro's 12 counties (the counties of St. Louis, MO, St. Louis City, MO, St. Charles, MO, Jefferson, MO, Franklin, MO, Lincoln, MO, Warren, MO, Madison, IL, St. Clair, IL, Monroe, IL, Jersey, IL and Clinton, IL). Radar signatures are estimates from the Hail Detection Algorithm, not measured stones; they include every cell it rated, from a 10% to a 100% probability of hail. How these pages are built.