Preliminary NWS reports for San Antonio on May 26, 2025 via the Storm Prediction Center. NCEI check for San Antonio on May 26, 2025: NCEI final record: confirmed (StormEvents_details-ftp_v1.0_d2025_c20260819.csv.gz, compiled August 19, 2026). The San Antonio record that holds May 26, 2025 last changed October 17, 2026.
The Day In Numbers
| Reports of 1 inch or larger | 12 |
|---|---|
| Counties reporting | 2: Bexar, Kendall |
| Largest stone (inches) | 3 |
| Reports 1.75 inches or larger | 3 |
For San Antonio, the Storm Prediction Center date runs from 12:00 UTC on May 26, 2025 to 12:00 UTC the next day, soSan Antonio reports timed 00:00 to 11:59 UTC happened on the evening of May 26, 2025 in Texas. For San Antonio on May 26, 2025, stone size is the diameter in inches as reported to the National Weather Service.
Every Report
| Time (UTC) | Size (inches) | Location | County |
|---|---|---|---|
| 00:54 | 1 | 3 SSW Waring | Kendall |
| 01:14 | 1 | 6 S Sisterdale | Kendall |
| 01:28 | 1 | 2 SW Boerne | Kendall |
| 02:12 | 1 | 2 WSW Grey Forest | Bexar |
| 02:17 | 3 | 2 SSW Government Canyon | Bexar |
| 02:43 | 1.75 | 2 E Helotes | Bexar |
| 02:44 | 1 | Helotes | Bexar |
| 02:45 | 2.5 | 1 ESE San Geronimo | Bexar |
| 02:49 | 1 | 3 NW Leon Valley | Bexar |
| 02:56 | 1.5 | 3 NW Leon Valley | Bexar |
| 02:57 | 1 | 4 E Grey Forest | Bexar |
| 02:59 | 1 | 3 W Shavano Park | Bexar |
Largest Report On May 26, 2025
The largest stone reported on May 26, 2025 was 3 inches at 2 SSW Government Canyon, Bexar County, timed 02:17 UTC.No other San Antonio report on May 26, 2025 matched 3 inches. The note the San Antonio area forecast office attached to it on May 26, 2025 reads: “3 in hailstone measured from Culebra and Talley Rd; Time estimated via radar; (EWX)”
Reports By County On May 26, 2025
| County | Reports | Largest (inches) | Sizes in report order (inches) |
|---|---|---|---|
| Bexar | 9 | 3 | 1, 3, 1.75, 1, 2.5, 1, 1.5, 1, 1 |
| Kendall | 3 | 1 | 1, 1, 1 |
The 12 reports on May 26, 2025 were spread over 2 counties, and Bexar County held the largest stone at 3 inches. Bexar County logged 9 reports with a largest stone of 3 inches on May 26, 2025. Kendall County logged 3 reports with a largest stone of 1 inch on May 26, 2025.
What The Reporters Wrote
- 00:54 UTC, 3 SSW Waring, Kendall County, 1 inch: Quarter size hail reported at I10 at Big Joshua Creek; (EWX)
- 01:14 UTC, 6 S Sisterdale, Kendall County, 1 inch: Time estimated from radar; (EWX)
- 01:28 UTC, 2 SW Boerne, Kendall County, 1 inch: Report from mPING: Quarter (1.00 in.); (EWX)
- 02:12 UTC, 2 WSW Grey Forest, Bexar County, 1 inch: Quarter sized hail reported; (EWX)
- 02:17 UTC, 2 SSW Government Canyon, Bexar County, 3 inches: 3 in hailstone measured from Culebra and Talley Rd; Time estimated via radar; (EWX)
- 02:43 UTC, 2 E Helotes, Bexar County, 1.75 inches: Golf ball hail reported by trained spotter near Circle S Drive; (EWX)
- 02:44 UTC, Helotes, Bexar County, 1 inch: (EWX)
- 02:45 UTC, 1 ESE San Geronimo, Bexar County, 2.5 inches: (EWX)
- 02:49 UTC, 3 NW Leon Valley, Bexar County, 1 inch: Report from mPING; (EWX)
- 02:56 UTC, 3 NW Leon Valley, Bexar County, 1.5 inches: Report from mPING; (EWX)
- 02:57 UTC, 4 E Grey Forest, Bexar County, 1 inch: Report from mPING; (EWX)
- 02:59 UTC, 3 W Shavano Park, Bexar County, 1 inch: Report from mPING; (EWX)
Other Hail Days Within 30 Days Of May 26, 2025
4 other days in the San Antonio record had hail of 1 inch or larger within 30 days of May 26, 2025. A San Antonio roof hit on May 26, 2025 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, 20 days before May 26, 2025: May 6, 2025, 2 reports, largest 1 inch.
- San Antonio, 21 days before May 26, 2025: May 5, 2025, 1 report, largest 1 inch.
- San Antonio, 24 days before May 26, 2025: May 2, 2025, 10 reports, largest 1.5 inches.
- San Antonio, 26 days before May 26, 2025: April 30, 2025, 4 reports, largest 3 inches.
Re-Roof Permits In The 30 Days After May 26, 2025
The City of San Antonio permit file lists 893 re-roof permits issued from May 27, 2025 to June 25, 2025, the 30 days after May 26, 2025. For scale, the same file averages about 413 per 30 days from November 30, 2020 to September 25, 2026, so the May 26, 2025 window came in above that average. The 893 City of San Antonio permits counted after May 26, 2025 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 May 26, 2025: 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 May 26, 2025, pulled October 17, 2026. The San Antonio file for May 26, 2025 is preliminary: forecast offices logged its 12 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 May 26, 2025 it is checked against a file that reaches May 26, 2026, 365 days later. For May 26, 2025 in San Antonio the NCEI record does list hail, so a reviewed entry exists for this date. Sizes and counts for San Antonio on May 26, 2025 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 May 26, 2025 with your address, then get a documented inspection before you file anything. See the San Antonio hail history for how May 26, 2025 compares. For a San Antonio roof after May 26, 2025, the hail claim calculator shows whether a claim nets anything after your deductible. Before you sign anything in San Antonio after May 26, 2025, use the check-a-roofer guide. For a San Antonio roof hit on May 26, 2025, chapter 707 bars a Texas contractor from negotiating the claim for you. After May 26, 2025, see the San Antonio roofing company ranking and the company directory.
Previous storm day: May 2, 2025 | Next storm day: March 10, 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 May 26, 2025, pulled October 17, 2026, preliminary and subject to review. https://www.spc.noaa.gov/climo/reports/250526_rpts.html.
- NOAA National Centers for Environmental Information, Storm Events Database bulk files, the record the San Antonio May 26, 2025 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 893 permits counted after May 26, 2025. https://data.sanantonio.gov/dataset/building-permits.