Preliminary NWS reports for Houston on August 18, 2025 via the Storm Prediction Center. NCEI check for Houston on Aug 18, 2025: NCEI final record: confirmed (StormEvents_details-ftp_v1.0_d2025_c20260819.csv.gz, compiled August 19, 2026). The Houston record that holds Aug 18, 2025 last changed October 10, 2026.
The Day In Numbers
| Reports of 1 inch or larger | 4 |
|---|---|
| Counties reporting | 1: Harris |
| Largest stone (inches) | 1.25 |
| Reports 1.75 inches or larger | 0 |
For Houston, the Storm Prediction Center date runs from 12:00 UTC on August 18, 2025 to 12:00 UTC the next day, soHouston reports timed 00:00 to 11:59 UTC happened on the evening of August 18, 2025 in Texas. For Houston on Aug 18, 2025, stone size is the diameter in inches as reported to the National Weather Service.
Every Report
| Time (UTC) | Size (inches) | Location | County |
|---|---|---|---|
| 00:40 | 1 | 8 NNE Jersey Village | Harris |
| 00:40 | 1 | 8 NNE Jersey Village | Harris |
| 01:08 | 1.25 | 8 SW Spring | Harris |
| 01:36 | 1.25 | 2 NW Bellaire | Harris |
Largest Report On August 18, 2025
The largest stone reported on August 18, 2025 was 1.25 inches at 8 SW Spring, Harris County, timed 01:08 UTC.2 Houston reports on Aug 18, 2025 tied at 1.25 inches, and this is the earliest of them. The note the Houston area forecast office attached to it on August 18, 2025 reads: “Report from mPING: Half Dollar (1.25 in.); (HGX)”
Reports By County On Aug 18, 2025
| County | Reports | Largest (inches) | Sizes in report order (inches) |
|---|---|---|---|
| Harris | 4 | 1.25 | 1, 1, 1.25, 1.25 |
All 4 reports on August 18, 2025 came from Harris County. Harris County logged 4 reports with a largest stone of 1.25 inches on August 18, 2025.
What The Reporters Wrote
- 00:40 UTC, 8 NNE Jersey Village, Harris County, 1 inch: Storm spotter reported marble to quarter size hail near FM 1960 and Veterans Memorial Drive; (HGX)
- 00:40 UTC, 8 NNE Jersey Village, Harris County, 1 inch: Fort Bend emergency manager reported golf ball size hail in Champions Forest; (HGX)
- 01:08 UTC, 8 SW Spring, Harris County, 1.25 inches: Report from mPING: Half Dollar (1.25 in.); (HGX)
- 01:36 UTC, 2 NW Bellaire, Harris County, 1.25 inches: Report from mPING: Half Dollar (1.25 in.); (HGX)
Other Hail Days Within 30 Days Of Aug 18, 2025
No other day in the Houston record has a hail report of 1 inch or larger within 30 days before or after August 18, 2025. The Houston record that holds Aug 18, 2025 runs January 1, 2024 to October 9, 2026.
Reading A Preliminary Record Against The Final One
The reports above come from the Storm Prediction Center file for Houston on August 18, 2025, pulled October 10, 2026. The Houston file for Aug 18, 2025 is preliminary: forecast offices logged its 4 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 Houston on Aug 18, 2025 it is checked against a file that reaches June 2, 2026, 288 days later. For August 18, 2025 in Houston the NCEI record does list hail, so a reviewed entry exists for this date. Sizes and counts for Houston on Aug 18, 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 Houston report locations for August 18, 2025 with your address, then get a documented inspection before you file anything. See the Houston hail history for how Aug 18, 2025 compares. For a Houston roof after August 18, 2025, the hail claim calculator shows whether a claim nets anything after your deductible. Before you sign anything in Houston after Aug 18, 2025, use the check-a-roofer guide. For a Houston roof hit on August 18, 2025, chapter 707 bars a Texas contractor from negotiating the claim for you. After Aug 18, 2025, see the Houston roofing company ranking and the company directory.
Previous storm day: May 5, 2025 | Next storm day: April 30, 2026 | All Houston storm days | Earliest storm day: March 15, 2024 | Latest storm day: June 2, 2026
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Sources
- NOAA Storm Prediction Center, preliminary local storm reports for Houston on August 18, 2025, pulled October 10, 2026, preliminary and subject to review. https://www.spc.noaa.gov/climo/reports/250818_rpts.html.
- NOAA National Centers for Environmental Information, Storm Events Database bulk files, the record the Houston August 18, 2025 status line above checks (record reaches June 2, 2026, pulled October 10, 2026, reviewed record). https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/.