Hail in St. Louis on Friday, July 9, 2021
The Storm Prediction Center logged 13 hail reports in St. Louis on Friday, July 9, 2021, between 9:18 pm and 11:43 pm CDT, in 2 of the metro's 12 counties. The largest was 2.00 inches at 2 ESE Maryland Heights (St. Louis, MO) at 9:22 pm. NOAA radar flagged 335 hail signatures inside the metro that day: 59 rated a 100% chance of hail and 67 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 7 places in St. Charles, MO and St. Louis, MO, named as the National Weather Service described them.
- Creve Coeur 5 reports, up to 1.75 in
- Bridgeton 3 reports, up to 1.75 in
- Brentwood 1 report, up to 1.00 in
- Maryland Heights 1 report, up to 2.00 in
- Overland 1 report, up to 1.00 in
- Saint Ann 1 report, up to 1.00 in
- Saint Paul 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 |
|---|---|---|---|---|
| 9:18 pm | 1.25 | 1 SSW Bridgeton | St. Louis, MO | REPORT NEAR I-70 AND I-270 INTERCHANGE. (LSX) |
| 9:20 pm | 1.00 | Bridgeton | St. Louis, MO | (LSX) |
| 9:21 pm | 1.00 | Overland | St. Louis, MO | (LSX) |
| 9:21 pm | 1.00 | Saint Ann | St. Louis, MO | (LSX) |
| 9:22 pm | 2.00 | 2 ESE Maryland Heights | St. Louis, MO | FACEBOOK PICTURE OF 2 INCH HAIL. (LSX) |
| 9:23 pm | 1.75 | 2 S Bridgeton | St. Louis, MO | REPORTED NEAR PARKWOOD AND ST. CHARLES ROCK ROAD. (LSX) |
| 9:31 pm | 1.25 | 2 NNE Creve Coeur | St. Louis, MO | REPORT FROM MPING: HALF DOLLAR (1.25 IN.). (LSX) |
| 9:32 pm | 1.50 | 1 NNW Creve Coeur | St. Louis, MO | REPORT FROM MPING: PING PONG BALL (1.50 IN.). (LSX) |
| 9:32 pm | 1.75 | 1 N Creve Coeur | St. Louis, MO | REPORT FROM MPING: GOLF BALL (1.75 IN.). (LSX) |
| 9:42 pm | 1.00 | 1 ENE Creve Coeur | St. Louis, MO | (LSX) |
| 9:45 pm | 1.75 | Creve Coeur | St. Louis, MO | AT MOSLEY AND LADUE. (LSX) |
| 9:47 pm | 1.00 | 1 NW Brentwood | St. Louis, MO | (LSX) |
| 11:43 pm | 1.00 | 3 WNW Saint Paul | St. Charles, MO | REPORT FROM MPING: QUARTER (1.00 IN.). (LSX) |
What NEXRAD radar recorded inside the metro
335 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; 59 were rated 100% and 14 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 | 167 | 13 | 24 | 0 | 1.75 in | 7:38 pm | 11:59 pm |
| KILX | 73 | 34 | 17 | 6 | 4.00 in | 8:12 pm | 11:55 pm |
| KLSX | 63 | 4 | 20 | 6 | 3.50 in | 8:18 pm | 11:58 pm |
| KPAH | 17 | 6 | 5 | 2 | 2.75 in | 8:44 pm | 10:08 pm |
| KVWX | 15 | 2 | 1 | 0 | 1.00 in | 8:41 pm | 9:47 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 July 9, 2021
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.