Preliminary NWS reports for San Antonio on March 10, 2026 via the Storm Prediction Center. NCEI check for San Antonio on Mar 10, 2026: NCEI final record: confirmed (StormEvents_details-ftp_v1.0_d2026_c20260918.csv.gz, compiled September 18, 2026). The San Antonio record that holds Mar 10, 2026 last changed October 17, 2026.
The Day In Numbers
| Reports of 1 inch or larger | 5 |
|---|---|
| Counties reporting | 2: Bandera, Kendall |
| Largest stone (inches) | 2.75 |
| Reports 1.75 inches or larger | 4 |
For San Antonio, the Storm Prediction Center date runs from 12:00 UTC on March 10, 2026 to 12:00 UTC the next day, soSan Antonio reports timed 00:00 to 11:59 UTC happened on the evening of March 10, 2026 in Texas. For San Antonio on Mar 10, 2026, stone size is the diameter in inches as reported to the National Weather Service.
Every Report
| Time (UTC) | Size (inches) | Location | County |
|---|---|---|---|
| 00:30 | 2.5 | Lost Maples State Natur | Bandera |
| 00:40 | 2.75 | 6 E Vanderpool | Bandera |
| 00:45 | 2.5 | 3 NNW Medina | Bandera |
| 01:25 | 1.5 | 1 N Comfort | Kendall |
| 01:30 | 2 | Comfort | Kendall |
Largest Report On March 10, 2026
The largest stone reported on March 10, 2026 was 2.75 inches at 6 E Vanderpool, Bandera County, timed 00:40 UTC.No other San Antonio report on Mar 10, 2026 matched 2.75 inches. The note the San Antonio area forecast office attached to it on March 10, 2026 reads: “Hail up to baseball size; broken windshield on car; On RM 337 between Vanderpool and Medina; Time estimated via radar; (EWX)”
Reports By County On Mar 10, 2026
| County | Reports | Largest (inches) | Sizes in report order (inches) |
|---|---|---|---|
| Bandera | 3 | 2.75 | 2.5, 2.75, 2.5 |
| Kendall | 2 | 2 | 1.5, 2 |
The 5 reports on March 10, 2026 were spread over 2 counties, and Bandera County held the largest stone at 2.75 inches. Bandera County logged 3 reports with a largest stone of 2.75 inches on March 10, 2026. Kendall County logged 2 reports with a largest stone of 2 inches on March 10, 2026.
What The Reporters Wrote
- 00:30 UTC, Lost Maples State Natur, Bandera County, 2.5 inches: ; (EWX)
- 00:40 UTC, 6 E Vanderpool, Bandera County, 2.75 inches: Hail up to baseball size; broken windshield on car; On RM 337 between Vanderpool and Medina; Time estimated via radar; (EWX)
- 00:45 UTC, 3 NNW Medina, Bandera County, 2.5 inches: Hail ranging from 2.00 to 2.25 inches; (EWX)
- 01:25 UTC, 1 N Comfort, Kendall County, 1.5 inches: (EWX)
- 01:30 UTC, Comfort, Kendall County, 2 inches: Social media picture of lime size hail with a lime next to it for reference; Time estimated via radar; (EWX)
Other Hail Days Within 30 Days Of Mar 10, 2026
1 other day in the San Antonio record had hail of 1 inch or larger within 30 days of March 10, 2026. A San Antonio roof hit on March 10, 2026 and again on one of these dates can carry damage from both, which matters when a claim is filed for only one date.
- San Antonio, 3 days before Mar 10, 2026: March 7, 2026, 2 reports, largest 1.5 inches.
Re-Roof Permits In The 30 Days After Mar 10, 2026
The City of San Antonio permit file lists 405 re-roof permits issued from March 11, 2026 to April 9, 2026, the 30 days after March 10, 2026. For scale, the same file averages about 413 per 30 days from November 30, 2020 to September 25, 2026, so the Mar 10, 2026 window came in below that average. The 405 City of San Antonio permits counted after March 10, 2026 include every re-roof permit in that window, not only roofs hit by hail, and a permit shows work that was filed, not that hail caused it. Dataset for the City of San Antonio count after March 10, 2026: https://data.sanantonio.gov/dataset/building-permits, City of San Antonio, Development Services Department, loaded through September 25, 2026.
Reading A Preliminary Record Against The Final One
The reports above come from the Storm Prediction Center file for San Antonio on March 10, 2026, pulled October 17, 2026. The San Antonio file for Mar 10, 2026 is preliminary: forecast offices logged its 5 reports as they arrived, and a spotter, a broadcaster or a social media post can each be the source. The NCEI Storm Events record is the reviewed version, and for San Antonio on Mar 10, 2026 it is checked against a file that reaches May 26, 2026, 77 days later. For March 10, 2026 in San Antonio the NCEI record does list hail, so a reviewed entry exists for this date. Sizes and counts for San Antonio on Mar 10, 2026 can still differ between the two records, so use the NCEI entry when the two disagree.
If Your Roof Was Under This
Compare the San Antonio report locations for March 10, 2026 with your address, then get a documented inspection before you file anything. See the San Antonio hail history for how Mar 10, 2026 compares. For a San Antonio roof after March 10, 2026, the hail claim calculator shows whether a claim nets anything after your deductible. Before you sign anything in San Antonio after Mar 10, 2026, use the check-a-roofer guide. For a San Antonio roof hit on March 10, 2026, chapter 707 bars a Texas contractor from negotiating the claim for you. After Mar 10, 2026, see the San Antonio roofing company ranking and the company directory.
Previous storm day: May 26, 2025 | Next storm day: May 26, 2026 | All San Antonio storm days | Earliest storm day: January 23, 2024 | Latest storm day: September 11, 2026
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Sources
- NOAA Storm Prediction Center, preliminary local storm reports for San Antonio on March 10, 2026, pulled October 17, 2026, preliminary and subject to review. https://www.spc.noaa.gov/climo/reports/260310_rpts.html.
- NOAA National Centers for Environmental Information, Storm Events Database bulk files, the record the San Antonio March 10, 2026 status line above checks (record reaches May 26, 2026, pulled October 17, 2026, reviewed record). https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/.
- City of San Antonio, Development Services Department, re-roof permit file, loaded through September 25, 2026, used for the 405 permits counted after March 10, 2026. https://data.sanantonio.gov/dataset/building-permits.