On the map: every storm report logged this day.
On the map
Storm reports for August 25, 2017
On August 25, 2017, 11 hail, 11 damaging-wind and 13 tornado reports were logged across 5 states.
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On August 25, 2017, 11 hail, 11 damaging-wind and 13 tornado reports were logged across 5 states. The largest hail reported was 1.75″ (golf ball size) in Ziebach County, SD.
Storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Radar hail estimates start October 2019.
Storm reports by state
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| TX | 0 | 2 | 13 | – |
| SD | 9 | 5 | 0 | 1.75″ |
| CO | 2 | 0 | 0 | 1.00″ |
| FL | 0 | 2 | 0 | – |
| GA | 0 | 2 | 0 | – |
Hail reports (11)
| Time (UTC) | Size | Location |
|---|---|---|
| 16:10 | 1.75″ | Ziebach County, SD |
| 21:50 | 1.75″ | Tripp County, SD |
| 22:50 | 1.50″ | Brule County, SD |
| 20:15 | 1.00″ | Pennington County, SD |
| 22:38 | 1.00″ | Tripp County, SD |
| 22:45 | 1.00″ | Brule County, SD |
| 23:51 | 1.00″ | Phillips County, CO |
| 20:23 | 0.75″ | Pennington County, SD |
| 20:27 | 0.75″ | Potter County, SD |
| 21:20 | 0.75″ | Todd County, SD |
| 00:10 | 0.75″ | Phillips County, CO |
Damage, injuries and deaths
National Weather Service offices recorded about $3.9 million in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (38 events in 5 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Fort Bend County, TX | 4 | 0 | 0 | $1.8 million |
| Brazoria County, TX | 5 | 0 | 0 | $780,000 |
| Waller County, TX | 2 | 0 | 0 | $700,000 |
| Matagorda County, TX | 1 | 0 | 0 | $500,000 |
| Harris County, TX | 1 | 0 | 0 | $100,000 |
| Calhoun County, TX | 1 | 0 | 0 | $10,000 |
| Ector County, TX | 1 | 0 | 0 | $8,000 |
| Jefferson County, FL | 1 | 0 | 0 | $2,000 |
| Galveston County, TX | 1 | 0 | 0 | $1,000 |
What the National Weather Service wrote
- Fort Bend County, TX (near Katy) · Tornado EF1 · $800,000
“Tornado touched down near Trailer World RV and Boat Storage facility then crossed Interstate 10. It did minor damage to Bucees car wash area then ripped large air conditioning units off top of Pepperl Fuchs buiding. Finally in damaged awnings near Builders First building.” - Matagorda County, TX (near Sargent) · Tornado EF1 · $500,000
“A brief yet strong tornado moved onshore along the coast in Sargent causing significant damage to one home and overturning a motor home. Numerous trees were snapped and/or downed along the path as well as minor roof damage to several homes and businesses.” - Fort Bend County, TX (near Sugarland Jct) · Tornado EF1 · $500,000
“Tornado tracked across Sienna Plantation subdivision downing trees and damaging roofs on about 25 homes. Vieux Carre Ct and Steve Ct were hardest hit.” - Waller County, TX (near Katy) · Tornado EF1 · $500,000
“Tornado touched down near Trailer World RV and Boat Storage facility then crossed Interstate 10. It did minor damage to Bucees car wash area then ripped large air conditioning units off top of Pepperl-Fuchs building. Finally in damaged awnings near Builders First building before lifting.” - Brazoria County, TX (near Iowa Colony) · Tornado EF1 · $500,000
“An EF-1 tornado touched down southeast of Juliff and tracked from Brazoria into Fort Bend County. Damage occurred to some roofs Several trees there were either snapped or downed. Damage path crossed county line from Brazoria to Fort Bend County. This entry is for the Brazoria County segment.” - Waller County, TX (near Katy) · Tornado EF1 · $200,000
“Tornado appeared to touch down at an RV and boat storage facility then cross Interstate 10. It then damaged Pepperl Fuchs facility on north side of Interstate. Tornado crossed from Fort Bend into Waller County.”
Event narratives from NWS Storm Data, shortened. Up to six per day, chosen by deaths, injuries, damage and size.
Source: NOAA National Centers for Environmental Information (NCEI), Storm Events Database, as entered by National Weather Service offices; data through July 31, 2026. Damage is in dollars of the year, not adjusted for inflation.
NWS Tornado Damage Surveys for August 25, 2017
National Weather Service survey teams mapped 6 tornado paths from this storm day (2 EF1, 4 EF0), 19 miles in all. The map above draws each surveyed path as the NWS mapped it, colored by the EF rating of each stretch, in place of the straight start-to-end line.
| Rating | Peak wind | Path length | Max width | Deaths / injuries | On the ground | Surveyed by |
|---|---|---|---|---|---|---|
| EF1 | 100 mph | 2.2 mi | – | 0 / 0 | 19:39–19:39 UTC | NWS Houston/Galveston |
| EF1 | 85 mph | 1.6 mi | 100 yd | 0 / 0 | 05:50–05:53 UTC | NWS Houston/Galveston |
| EF0 | 85 mph | 5.8 mi | 100 yd | 0 / 0 | 02:44–02:52 UTC | NWS Houston/Galveston |
| EF0 | 80 mph | 4.4 mi | 70 yd | 0 / 0 | 05:25–05:34 UTC | NWS Houston/Galveston |
| EF0 | 85 mph | 4.0 mi | 20 yd | 0 / 0 | 23:09–23:25 UTC | NWS Houston/Galveston |
| EF0 | 80 mph | 0.8 mi | – | 0 / 0 | 00:00–20:04 UTC | NWS Houston/Galveston |
Source: NOAA National Weather Service Damage Assessment Toolkit (DAT): the tornado paths and EF-rating zones NWS survey teams mapped after each storm. Survey data are preliminary and can be revised; NOAA's official record is Storm Data (NCEI). Paths are simplified to about 30 m. Times are when the tornado was on the ground, in UTC.
Guides: What radar-estimated hail (MESH) is and isn't · Storm reports: preliminary vs final
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