Hail in St. Louis on Wednesday, April 30, 2025
The Storm Prediction Center logged 5 hail reports in St. Louis on Wednesday, April 30, 2025, between 5:05 pm and 5:46 pm CDT, in 2 of the metro's 12 counties. The largest was 2.00 inches at Aviston (Clinton, IL) at 5:21 pm. NOAA radar flagged 286 hail signatures inside the metro that day: 29 rated a 100% chance of hail and 49 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 4 places in Clinton, IL and St. Charles, MO, named as the National Weather Service described them.
- Aviston 2 reports, up to 2.00 in
- O'Fallon 1 report, up to 1.00 in
- Trenton 1 report, up to 1.00 in
- Weldon Spring 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.
| Time | Size | Place | County | NWS comment |
|---|---|---|---|---|
| 5:05 pm | 1.00 | 1 SSE Trenton | Clinton, IL | (LSX) |
| 5:20 pm | 1.00 | 1 S Aviston | Clinton, IL | (LSX) |
| 5:21 pm | 2.00 | Aviston | Clinton, IL | Media reporting photo of 1.5-2.0 inch hail on social media. Time estimated from radar. (LSX) |
| 5:41 pm | 1.00 | 3 W Weldon Spring | St. Charles, MO | At least quarter sized hail. (LSX) |
| 5:46 pm | 1.00 | 1 W O'Fallon | St. Charles, MO | (LSX) |
What NEXRAD radar recorded inside the metro
286 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; 29 were rated 100% and 8 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 | 103 | 9 | 22 | 6 | 3.00 in | 6:20 am | 10:33 pm |
| KILX | 67 | 7 | 8 | 0 | 1.75 in | 7:52 am | 10:43 pm |
| KPAH | 57 | 4 | 5 | 0 | 1.75 in | 6:21 am | 8:21 pm |
| KLSX | 35 | 4 | 8 | 1 | 2.00 in | 7:35 am | 9:47 pm |
| KVWX | 24 | 5 | 6 | 1 | 2.00 in | 7:54 am | 7:37 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 April 30, 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.