Showers and thunderstorms developed in an unstable airmass during the late afternoon of August 11th. Storms mainly developed across the I-40 corridor and shifted south through the evening hours.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS AMA wrote it up.
Showers and thunderstorms developed in an unstable airmass during the late afternoon of August 11th. Storms mainly developed across the I-40 corridor and shifted south through the evening hours. These storms quickly grew to be severe and produce large hail thanks to colder temperatures in the upper atmosphere. A few storms produced gusty winds and localized wind damage. Efficient rainfall led to high rainfall rates and some localized flash flooding.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Amarillo, TX wrote its last area forecast discussion before the first event at Aug 11, 12:29 PM CST, 4 hours 30 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Amarillo TX 129 PM CDT Mon Aug 11 2025 ...New KEY MESSAGES, SHORT TERM, LONG TERM, AVIATION... .KEY MESSAGES... Issued at 1256 PM CDT Mon Aug 11 2025 - Storms this evening may be strong to severe and could produce heavy rain that may lead to localized flash flooding. - Temperatures over the next week will gradually warm back up to near average. - A pattern change may lead to additional shower and thunderstorm chances next weekend. && .SHORT TERM... (This evening through Tuesday night) Issued at 1256 PM CDT Mon Aug 11 2025 Conditions are setting up for another active weather day across the Panhandles, with scattered to widespread thunderstorms expected for south and central portions of the TX Panhandle. Portions of the OK and northern TX Panhandles received heavy rain (localized 1-3" totals) from a line of storms last night, leaving those areas fairly worked over with lower rain chances. As the upper level system departs tomorrow, rain cooled air and lingering cloud cover will make for a pleasant August afternoon with light winds and highs in the 80s to low 90s. Model guidance suggest there may be enough lingering moisture and lift in the area to support some isolated afternoon pop-up convection, capable of brief heavy downpours and gusty winds (~20% POPs). Our focus later this evening into the overnight hours is on the central to southern TX Panhandle, where an upper level shortwave and diffuse sfc boundary will help fire up potentially strong-severe convection. In the wake of last night's thunderstorms, satellite imagery shows cloud cover dissipating surprisingly well over the area, spelling the potential for sufficient atmospheric destabilization to occur through the day. Highs in the 80s to low 90s combined with dew pts in the upper 50s to low 60s will help CAPE values reach 1000-2000 J/kg, in the presence of 20-30 kt bulk shear values, will create an environment supportive of potentially severe hail and damaging wind gusts. CAMs show the diffuse sfc boundary firing up a few scattered cells across the central Panhandle around 4-6 PM, before the upper wave helps initiate more widespread convection likely along/south of the I-40 corridor. One thing to watch will be where exactly the boundary sets up, along with the influence of any new outflow boundaries. While widespread precipitation is favored across the south, negative boundary interactions or a further south track of the trough could shunt the bulk of activity to Lubbock's CWA. But for now, expect showers and storms to fill in across the south-southeast later this evening- overnight. Several models have become more aggressive on forecast rainfall totals tonight, highlighting local bulls-eyes of 1-3" rain amounts. Thanks to 1.25-1.75" PWATs, we believe those totals will be achievable, especially for any areas that receive the strongest storms, multiple rounds of storms, or prolonged periods of moderate rain behind the initial line of storms. Highest probabilities to exceed 1" of rain exist generally along and south of the I-40 and Hwy 60 corridors. These conditions could produce localized flooding tonight, so we continue urging people to have access to weather alerts and utilize extra caution on the roadways. Harrel && .LONG TERM... (Wednesday through next Sunday) Issued at 1256 PM CDT Mon Aug 11 2025 Quieter weather with highs in the upper 80s to low 90s is looking favorable Wednesday, with a relatively stagnant synoptic pattern aloft. By Thu-Fri, high pressure may set back up over the high Plains, spelling the return of widespread 90s with even a few spotty triple digits. Lee sfc cyclogenesis off the Rockies also points to our typical Panhandle breeze coming back, generally in the 15-25 mph range. Long range ensembles show high pressure becoming displaced late Friday into the weekend, allowing SW flow aloft to usher in weak disturbances and improved deep layer moisture. Currently, expect near average highs in the 90s with 15-25% precipitation chances each day. Harrel && .AVIATION... (18Z TAFS) Issued at 1256 PM CDT Mon Aug 11 2025 Thunderstorm potential increases this evening into the overnight hours, especially around KAMA after 00z where storm confidence is highest. KDHT and KGUY have lower chances to be directly impacted, but have maintained PROB30 groups for those sites. Otherwise, winds will be mostly light and variable once storms clear with VFR sky conditions. Harrel && .AMA WATCHES/WARNINGS/ADVISORIES... TX...None. OK...None. && SHORT TERM...38 LONG TERM....38 AVIATION...38
Hazardous Weather Outlook National Weather Service Amarillo TX 210 PM CDT Mon Aug 11 2025 OKZ001>003-TXZ001>020-317-120715- Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb- Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson- Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth- Palo Duro Canyon- 210 PM CDT Mon Aug 11 2025 This Hazardous Weather Outlook is for the Texas and Oklahoma Panhandles. .DAY ONE...Through Tonight. Thunderstorms are possible across the Texas and Oklahoma Panhandles during the afternoon and evening hours today. A few storms may become severe, with damaging winds and large hail being the primary factors. Additionally, storms may produce heavy rain that may lead to localized flash flooding. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Thunderstorms will be possible on Tuesday and again this upcoming weekend across portions of the Panhandles. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
Special Weather Statement
National Weather Service Amarillo TX
517 PM CDT Mon Aug 11 2025
TXZ007-012-112245-
Potter TX-Moore TX-
517 PM CDT Mon Aug 11 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN POTTER AND SOUTHERN
MOORE COUNTIES THROUGH 545 PM CDT...
At 516 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles northeast of Valley De Oro, or 23 miles south of Dumas, moving
northeast at 10 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
This storm will remain over mainly rural areas of northwestern Potter
and southern Moore Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3544 10207 3553 10216 3555 10216 3568 10207
3558 10193 3544 10182
TIME...MOT...LOC 2216Z 235DEG 7KT 3554 10206
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
CORSpecial Weather Statement
National Weather Service Amarillo TX
538 PM CDT Mon Aug 11 2025
TXZ008-013-112315-
Hutchinson TX-Carson TX-
538 PM CDT Mon Aug 11 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN CARSON AND
SOUTHWESTERN HUTCHINSON COUNTIES THROUGH 615 PM CDT...
At 537 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southeast of Fritch, or 11 miles southwest of Borger, moving
northeast at 10 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Borger.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3547 10156 3557 10161 3568 10147 3544 10131
TIME...MOT...LOC 2237Z 241DEG 10KT 3554 10151
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
CORThe Amarillo radar (KAMA), 33 km away, was scanning. The volume nearest the first event began at 22:57 UTC.
9 hail, 5 thunderstorm wind, 3 flash flood. Local standard time, as filed.
A supercell thunderstorm produced large hail across the city of Panhandle. Hail sizes ranged between golfball and 2 inches on the east side of Panhandle.
Hail up to tennis ball size fell along Highway 287 south of Masterson.
A motorist driving north stopped due to large hail that was estimated to be ping pong ball size.
Several large tree branches were broken in the Westgate Mall parking lot as well as along Coulter Road.
A supercell thunderstorm moved across Amarillo north of I-40. It produced a swath of hail ranging from half dollar size to golfball size. One injury was noted when a female was moving plants outside and was hit in the head with a hailstone that was around golfball size.
A supercell thunderstorm brought a swath of hail to the southwest part of Amarillo. Hailstones ranged from around quarter size up to golfball size.
A supercell thunderstorm produced hail from quarter to golfball size to the north and northwest of Canyon.
Heavy rain produced an estimated 6 to 12 inches of fast flowing water on couple of residential streets in the northwest part of Amarillo.
Mostly dime size hail fell but some stones were as large as quarter size. Trees and vegetation were damaged.
An estimated three to four feet of fast flowing water occurred in a normally dry creek bed.
Heavy rainfall brought flooding along Williams Street. At least an inch of water entered a couple of homes in the neighborhood.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2025Every state in 2025This day in weather historyWarnings in Texas, August 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1272615, 1272622, 1272623, 1272624, 1280339, 1272626, 1272903, 1272628, 1272954, 1272629, 1272630, 1272631, 1272632, 1272633, 1272955, 1272960, 1272636.