Hail in San Antonio on Saturday, December 18, 2021
The Storm Prediction Center logged 5 hail reports in San Antonio on Saturday, December 18, 2021, between 9:58 am and 11:12 am CST, in 3 of the metro's 8 counties. The largest was 2.00 inches at 3 N Sutherland Springs (Wilson County) at 10:30 am. NOAA radar flagged 538 hail signatures inside the metro that day: 124 rated a 100% chance of hail and 98 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 4 places in Bandera, Bexar and Wilson counties, named as the National Weather Service described them.
- Sutherland Springs 2 reports, up to 2.00 in
- Floresville 1 report, up to 1.00 in
- Sandy Oaks 1 report, up to 1.00 in
- Tarpley 1 report, up to 1.00 in
Every hail report logged that day
Times are Central Standard 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 |
|---|---|---|---|---|
| 9:58 am | 1.00 | 2 N Sandy Oaks | Bexar | CORRECTS PREVIOUS HAIL REPORT FROM 2 N SANDY OAKS. HAIL REPORTED NEAR I-37 AND LOOP 1604. (EWX) |
| 10:15 am | 1.00 | 7 NNW Floresville | Wilson | REPORT FROM MPING: QUARTER (1.00 IN.). (EWX) |
| 10:16 am | 1.25 | 1 N Sutherland Springs | Wilson | TRAINED SPOTTER REPORTED HAIL SLIGHTLY BIGGER THAN QUARTERS 3 MILES SE OF LA VERNIA. (EWX) |
| 10:30 am | 2.00 | 3 N Sutherland Springs | Wilson | PUBLIC REPORTS VIA SOCIAL MEDIA HAIL UP TO 2 INCHES IN DIAMETER. (EWX) |
| 11:12 am | 1.00 | 2 SSE Tarpley | Bandera | PUBLIC REPORT OF 1 INCH HAIL NEAR TARPLEY. VIA SOCIAL MEDIA. (EWX) |
What NEXRAD radar recorded inside the metro
538 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; 124 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 |
|---|---|---|---|---|---|---|---|
| KCRP | 151 | 29 | 18 | 2 | 2.00 in | 8:33 am | 2:00 pm |
| KEWX | 138 | 29 | 29 | 6 | 2.75 in | 3:34 am | 2:02 pm |
| KDFX | 135 | 28 | 22 | 3 | 3.00 in | 6:22 am | 1:59 pm |
| KGRK | 106 | 30 | 21 | 4 | 2.25 in | 9:40 am | 2:06 pm |
| KSJT | 8 | 8 | 8 | 6 | 3.00 in | 10:35 am | 11:00 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 December 18, 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 Standard 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.