Hail in St. Louis on Monday, May 19, 2025
The Storm Prediction Center logged 13 hail reports in St. Louis on Monday, May 19, 2025, between 8:38 pm and 9:01 pm CDT, in 1 of the metro's 12 counties. The largest was 2.00 inches at 1 N Florissant (St. Louis, MO) at 9:01 pm. NOAA radar flagged 1,103 hail signatures inside the metro that day: 39 rated a 100% chance of hail and 71 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 7 places in St. Louis, MO, named as the National Weather Service described them.
- Hazelwood 4 reports, up to 1.50 in
- Florissant 3 reports, up to 2.00 in
- Saint Ann 2 reports, up to 1.75 in
- Berkeley 1 report, up to 1.50 in
- Brentwood 1 report, up to 2.00 in
- Frontenac 1 report, up to 1.00 in
- Kirkwood 1 report, up to 1.75 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.
| Time | Size | Place | County | NWS comment |
|---|---|---|---|---|
| 8:38 pm | 2.00 | 1 SW Brentwood | St. Louis, MO | Via Twitter: Photo of 2 inch diameter hail with measurement included. (LSX) |
| 8:38 pm | 1.00 | 1 SW Frontenac | St. Louis, MO | Report from mPING: Quarter (1.00 in.). (LSX) |
| 8:40 pm | 1.75 | Kirkwood | St. Louis, MO | (LSX) |
| 8:45 pm | 1.00 | Hazelwood | St. Louis, MO | (LSX) |
| 8:50 pm | 1.00 | 1 WSW Saint Ann | St. Louis, MO | Via Slack: A few quarter sized hailstones falling east of Maryland Heights. (LSX) |
| 8:50 pm | 1.75 | Saint Ann | St. Louis, MO | (LSX) |
| 8:56 pm | 1.75 | Florissant | St. Louis, MO | Via Slack: Missouri State Highway Patrol reported golf ball sized hail in Florissant. (LSX) |
| 8:56 pm | 1.50 | 2 WNW Hazelwood | St. Louis, MO | Via Facebook: 1.5 inch hail measured with ruler. (LSX) |
| 8:57 pm | 1.25 | 1 NW Hazelwood | St. Louis, MO | (LSX) |
| 8:58 pm | 1.50 | 1 NNE Berkeley | St. Louis, MO | (LSX) |
| 8:58 pm | 1.25 | 1 NNW Hazelwood | St. Louis, MO | (LSX) |
| 9:00 pm | 1.00 | Florissant | St. Louis, MO | (LSX) |
| 9:01 pm | 2.00 | 1 N Florissant | St. Louis, MO | Observer estimated wind gusts around 40 mph. (LSX) |
What NEXRAD radar recorded inside the metro
1,103 signatures from 5 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; 39 were rated 100% and 21 had a maximum expected size of 2 inches or more.
| Radar | Signatures | Rated 100% | 1 in or more | 2 in or more | Largest expected | First | Last |
|---|---|---|---|---|---|---|---|
| KSTL | 464 | 6 | 25 | 3 | 2.00 in | 5:53 am | 11:56 pm |
| KPAH | 185 | 9 | 12 | 5 | 3.00 in | 11:11 am | 11:57 pm |
| KILX | 179 | 13 | 18 | 7 | 3.00 in | 9:02 am | 11:54 pm |
| KLSX | 167 | 11 | 15 | 6 | 2.75 in | 9:02 am | 11:55 pm |
| KVWX | 108 | 0 | 1 | 0 | 1.00 in | 11:09 am | 11:58 pm |
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 19, 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.
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.