Hail in St. Louis on Thursday, April 20, 2023
The Storm Prediction Center logged 19 hail reports in St. Louis on Thursday, April 20, 2023, between 3:49 pm and 5:47 pm CDT, in 4 of the metro's 12 counties. The largest was 1.75 inches at 3 NNE Warrenton (Warren, MO) at 4:17 pm.
NOAA's radar hail archive holds no records at all for April 20, 2023 (UTC), anywhere in the country, so radar figures for this date are incomplete. That is a gap in NOAA's processing, not a sign that radar saw no hail.
Where hail was reported
Reports came from 9 places in Jersey, IL, Lincoln, MO, St. Charles, MO and Warren, MO, named as the National Weather Service described them.
- Troy 10 reports, up to 1.75 in
- Moscow Mills 2 reports, up to 1.50 in
- Cave 1 report, up to 1.00 in
- Fieldon 1 report, up to 1.00 in
- Foley 1 report, up to 1.50 in
- Warrenton 1 report, up to 1.75 in
- Wentzville 1 report, up to 1.00 in
- Winfield 1 report, up to 1.00 in
- Wright City 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 |
|---|---|---|---|---|
| 3:49 pm | 1.00 | 3 SSW Cave | Lincoln, MO | (LSX) |
| 3:54 pm | 1.00 | 1 NNW Troy | Lincoln, MO | (LSX) |
| 3:55 pm | 1.00 | Troy | Lincoln, MO | (LSX) |
| 3:56 pm | 1.25 | 2 SE Troy | Lincoln, MO | REPORT FROM MPING: HALF DOLLAR (1.25 IN.). (LSX) |
| 3:56 pm | 1.75 | 1 E Troy | Lincoln, MO | (LSX) |
| 3:56 pm | 1.25 | Troy | Lincoln, MO | (LSX) |
| 3:57 pm | 1.00 | 1 N Troy | Lincoln, MO | REPORT FROM MPING: QUARTER (1.00 IN.). (LSX) |
| 3:58 pm | 1.00 | 1 E Troy | Lincoln, MO | REPORT FROM MPING: QUARTER (1.00 IN.). (LSX) |
| 4:02 pm | 1.00 | 1 WNW Moscow Mills | Lincoln, MO | REPORT FROM MPING: QUARTER (1.00 IN.). (LSX) |
| 4:04 pm | 1.75 | 1 NE Troy | Lincoln, MO | (LSX) |
| 4:05 pm | 1.00 | 3 WNW Winfield | Lincoln, MO | (LSX) |
| 4:15 pm | 1.50 | 1 SW Foley | Lincoln, MO | DAMAGE: BROKEN WINDOW AND DAMAGED DECK. (LSX) |
| 4:17 pm | 1.75 | 3 NNE Warrenton | Warren, MO | (LSX) |
| 4:24 pm | 1.00 | 3 NNE Wright City | Warren, MO | VIEWER PICTURE OF SLIGHTLY BIGGER THAN QUARTER SIZE HAIL IN WRIGHT CITY. TIME BASED ON RADAR. (LSX) |
| 4:26 pm | 1.50 | 2 SE Troy | Lincoln, MO | REPORT FROM MPING: PING PONG BALL (1.50 IN.). (LSX) |
| 4:28 pm | 1.50 | 2 WNW Moscow Mills | Lincoln, MO | (LSX) |
| 4:31 pm | 1.00 | 1 SSE Troy | Lincoln, MO | REPORT FROM MPING: QUARTER (1.00 IN.). (LSX) |
| 4:59 pm | 1.00 | Fieldon | Jersey, IL | (LSX) |
| 5:47 pm | 1.00 | 1 SSW Wentzville | St. Charles, MO | PEA SIZED HAIL FELL FOR A PERIOD OF 8 MINUTES WITH A BRIEF PERIOD OF HAIL AROUND THE SIZE OF QUARTERS. OBSERVATION WAS TAKEN OFF OF WILMER VALLEY DRIVE. (LSX) |
What NEXRAD radar recorded inside the metro
NOAA's radar hail archive holds no records at all for April 20, 2023 (UTC), anywhere in the country, so radar figures for this date are incomplete. That is a gap in NOAA's processing, not a sign that radar saw no hail. The 1 signatures NOAA does hold for this local day are counted below.
| Radar | Signatures | Rated 100% | 1 in or more | 2 in or more | Largest expected | First | Last |
|---|---|---|---|---|---|---|---|
| KSTL | 1 | 0 | 0 | 0 | 0.50 in | 8:36 pm | 8:36 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 20, 2023
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.