Hail in San Antonio on Tuesday, March 23, 2021
The Storm Prediction Center logged 6 hail reports in San Antonio on Tuesday, March 23, 2021, between 1:04 am and 1:44 am CDT, in 3 of the metro's 8 counties. The largest was 2.00 inches at 7 NNE New Braunfels (Comal County) at 1:29 am. NOAA radar flagged 293 hail signatures inside the metro that day: 167 rated a 100% chance of hail and 176 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 5 places in Bexar, Comal and Kendall counties, named as the National Weather Service described them.
- Boerne 2 reports, up to 1.00 in
- Canyon Lake 1 report, up to 1.75 in
- New Braunfels 1 report, up to 2.00 in
- Sea World 1 report, up to 1.00 in
- Zorn 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 |
|---|---|---|---|---|
| 1:04 am | 1.00 | 1 E Boerne | Kendall | (EWX) |
| 1:05 am | 1.75 | 3 NW Canyon Lake | Comal | NUMEROUS REPORTS OF QUARTER TO GOLF BALL SIZED HAIL AROUND CANYON LAKE. (EWX) |
| 1:07 am | 1.00 | 1 WSW Boerne | Kendall | TWO DIFFERENT SOCIAL MEDIA REPORTS OF QUARTER SIZED HAIL IN BOERNE. (EWX) |
| 1:29 am | 2.00 | 7 NNE New Braunfels | Comal | (EWX) |
| 1:30 am | 1.75 | 7 WNW Zorn | Comal | NWS EMPLOYEE REPORTED GOLF BALL SIZED HAIL JUST TO THE NORTHEAST OF NEW BRAUNFELS. (EWX) |
| 1:44 am | 1.00 | 4 SW Sea World | Bexar | REPORT RELAYED VIA THE MEDIA OF QUARTER SIZED HAIL ON THE WEST SIDE OF SAN ANTONIO. (EWX) |
What NEXRAD radar recorded inside the metro
293 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; 167 were rated 100% and 53 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 |
|---|---|---|---|---|---|---|---|
| KDFX | 83 | 52 | 50 | 19 | 3.50 in | 12:06 am | 2:51 am |
| KEWX | 82 | 42 | 49 | 16 | 3.50 in | 12:00 am | 2:29 am |
| KGRK | 73 | 44 | 41 | 7 | 3.00 in | 12:05 am | 3:09 am |
| KCRP | 38 | 12 | 19 | 5 | 2.25 in | 1:28 am | 2:49 am |
| KSJT | 17 | 17 | 17 | 6 | 2.75 in | 12:03 am | 12:43 am |
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 March 23, 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 San Antonio when its coordinates fall inside one of the metro's 8 counties (Bexar, Comal, Guadalupe, Kendall, Medina, Wilson, Atascosa and Bandera counties). 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.