Hail, Llano
- When
- May 10, 7:20 PM CST to 7:27 PM CST
- Where
- Llano County, Llano
- Measured
- 1 in hail
- Reported by
- CoCoRaHS
- Coordinates
- 30.750, -98.670
A CoCoRaHS observer reported hail ranging from a quarter-inch to 1 inch lasting for 5 to 7 minutes.
A cold front moved across South-Central Texas on the evening of May 10, encountering an unstable airmass and producing a line of strong to severe storms with damaging wind gusts and some severe hail. Most of the observed wind damage occurred in the Austin area.
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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 EWX wrote it up.
A cold front moved across South-Central Texas on the evening of May 10, encountering an unstable airmass and producing a line of strong to severe storms with damaging wind gusts and some severe hail. Most of the observed wind damage occurred in the Austin area.
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 Austin/San Antonio, TX wrote its last area forecast discussion before the first event at May 10, 5:30 PM CST, 1 hour 50 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Austin/San Antonio TX 630 PM CDT Sun May 10 2026 ...New AVIATION... .KEY MESSAGES... - Line of strong to severe storms likely this evening into tonight. - Seasonably warm temperatures and dry weather expected Monday and the rest of the week. && .UPDATE... Issued at 518 PM CDT Sun May 10 2026 A Severe Thunderstorm Watch has been issued for most of South Central Texas through midnight tonight. The main severe threats are damaging wind gusts (some up to 75 mph) and large hail. Can't rule out an isolated tornado mainly across the Hill Country area. In addition, locally heavy rain is forecast with the passage of the cold front this evening and part of the overnight hours. && .SHORT TERM... (Tonight through Monday night) Issued at 1225 PM CDT Sun May 10 2026 A line of strong to severe storms is expected to move northwest to southeast across most of South-Central Texas this evening into tonight. The primary severe threat posed by these storms is damaging wind, with a more isolated potential for large hail and locally heavy rain. Strong lines of storms can produce wide swaths of gusts of 50-60 mph with stronger pockets of gusts near and above 75 mph possible. Frequent lightning is also likely. The severe risk is expected to be highest when storms first enter the Hill Country and Austin area earlier in the evening, and the SPC has highlighted a Level 3 of 5 (Enhanced) risk of severe weather for these areas primarily due to the strong wind concerns. Storms should remain strong to severe as they move farther south with a continued threat for strong winds and locally heavy rain, but the severe risk is expected to gradually decline later in the night. An upper-level shortwave trough currently diving southeast over the Rockies and an accompanying cold front will provide the lift to trigger widespread thunderstorms this evening. This front is already moving across North Texas as of early afternoon Sunday and will be encroaching upon our area soon. There is a low to medium chance of a few isolated thunderstorms developing earlier in the day (with mainly a lightning, gusty wind, and small hail threat), mainly over the Coastal Plains, in the late afternoon and early evening. The dry- line should also push slightly eastward into Val Verde County ahead of the approaching front and may itself be a trigger for some isolated thunderstorms in the late afternoon over the southern Edwards Plateau, but the cold front will produce the majority of the storm and severe activity. Most models indicate an initial arrival of storms in the Hill Country near or just after sunset, starting by about 7 PM, reaching the I-35 corridor over the following hours and moving across the Coastal Plains closer to midnight. It is worth noting that storms of this variety with conditions favoring a wind- driven line of storms can often accelerate in forward speed during their development, so it is plausible that storm arrival could be a few hours earlier than the model consensus. In general, the focus is this evening. The greatest chances for severe weather for any particular location will likely be in the first 1-2 hours of storm onset. Stay indoors and have multiple ways to receive weather information. The highest likelihood for stormy weather and a more contiguous line of storms is generally over the Hill Country, I-35 corridor, and Coastal Plains, where the forward momentum of these storms is expected to be greatest. There is some uncertainty over the western extent of the line of storms over the Rio Grande Plains and areas west of US-83, but overall storm activity is still likely to be at least scattered in those areas with isolated severe potential. This evening's storms will likely be moving briskly, keeping regional rain totals mostly in the 0.5-1 inch range. However, a few pockets of heavier downpours could produce isolated and locally higher totals in the 2-4 inch range. Once the main line of storms and cold front passes, residual lightning and light rain from the trailing stratiform cloud deck may continue for a few hours, but will subside with the entirety of South-Central Texas dry by sunrise on Monday. Light northerly winds throughout the day will keep temperatures in check, though temperatures should still warm into the upper 70s (with the most moderated temperatures in the Hill Country and Austin area) to mid 80s (with the warmest temperatures in the Rio Grande Plains) under mostly sunny conditions. && .LONG TERM... (Tuesday through next Sunday) Issued at 1225 PM CDT Sun May 10 2026 Dry and warm weather is expected to continue for much of the week as a ridge builds overhead and maintains strength. Widespread highs in the 90s are expected by Thursday and Friday, continuing into the weekend. The last few afternoons of the week are forecast to be breezy as a tight pressure gradient sets up over the Plains. Rain chances stay near-zero for the entire work week, but some rain potential may start to reenter the picture early next week as the ridge weakens and a few upper-level disturbances start to impinge on our area within largely zonal flow. && .AVIATION... (00Z TAFS) Issued at 615 PM CDT Sun May 10 2026 A line of strong to severe thunderstorms associated with a cold front is forecast to push across the area terminals this evening/night period. Storms are forecast to affect the KDRT first between 01Z through 03Z Monday, then KAUS from 02Z through 04Z Monday, and for KSAT/KSSF between 03Z and 05Z Monday. Several hires models show the line of storms bowing through this evening/night with the potential for strong wind gusts of 35 knots to 45 knots. Also, large hail is possible with stronger storms. In addition, heavy rain and strong wind gusts could bring visibilities to 2 miles. The storms are forecast to quickly move to the south and into the Coastal Plains after midnight tonight. The winds decrease overnight, however, stay around the 8 to 10 knots. MVFR cigs are forecast middle of the overnight period through late Monday morning with VFR conditions returning for the afternoon. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 67 81 65 85 / 90 10 0 0 Austin Bergstrom Intl Airport 67 81 65 85 / 90 10 0 0 New Braunfels Muni Airport 67 82 64 85 / 90 10 0 0 Burnet Muni Airport 64 78 61 83 / 90 10 0 0 Del Rio Intl Airport 69 85 67 88 / 60 20 0 0 Georgetown Muni Airport 66 79 63 83 / 90 10 0 0 Hondo Muni Airport 67 84 64 87 / 70 20 0 0 San Marcos Muni Airport 67 82 64 85 / 90 10 0 0 La Grange - Fayette Regional 68 81 66 83 / 90 10 0 0 San Antonio Intl Airport 68 84 65 87 / 80 10 0 0 Stinson Muni Airport 68 84 66 87 / 70 10 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...17 LONG TERM....17 AVIATION...17
Special Weather Statement
National Weather Service Austin/San Antonio TX
458 PM CDT Sun May 10 2026
TXZ183-102245-
Val Verde TX-
458 PM CDT Sun May 10 2026
...Strong thunderstorms will impact portions of northwestern Val
Verde County through 545 PM CDT...
At 458 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles northwest of Pandale to 9 miles north
of Pumpville to 15 miles southeast of Dryden. Movement was southeast
at 15 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Langtry, Shumla, Pumpville, and Pandale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3029 10176 3028 10117 2974 10140 2975 10142
2977 10140 2975 10144 2978 10145 2979 10147
2976 10154 2981 10154 2980 10157 2977 10158
2977 10163 2976 10164 2977 10166 2976 10171
2978 10176
TIME...MOT...LOC 2158Z 297DEG 15KT 3025 10165 3008 10173 2987 10194
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
PlattSpecial Weather Statement
National Weather Service Austin/San Antonio TX
543 PM CDT Sun May 10 2026
TXZ183-102330-
Val Verde TX-
543 PM CDT Sun May 10 2026
...Strong thunderstorms will impact portions of northern Val Verde
County through 630 PM CDT...
At 542 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles west of Juno to 16 miles north of
Shumla to 6 miles west of Langtry. Movement was southeast at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Comstock, Langtry, Juno, Shumla, Seminole Canyon State Park, Pecos
River Boat Ramp, Bakers Crossing, Devils River State Nat Area Del
Norte and U.S. Highway 90.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
south central Texas.
&&
LAT...LON 2987 10176 3027 10136 2999 10075 2953 10126
2962 10125 2963 10126 2957 10129 2959 10131
2965 10130 2965 10136 2970 10137 2975 10142
2977 10140 2975 10144 2979 10147 2976 10154
2981 10154 2977 10158 2976 10164 2978 10176
TIME...MOT...LOC 2242Z 301DEG 23KT 3013 10129 3001 10137 2980 10167
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH
PlattSpecial Weather Statement
National Weather Service Austin/San Antonio TX
636 PM CDT Sun May 10 2026
TXZ183-184-110015-
Val Verde TX-Edwards TX-
636 PM CDT Sun May 10 2026
...Strong thunderstorms will impact portions of western Edwards and
eastern Val Verde Counties through 715 PM CDT...
At 636 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles west of Loma Alta to near Comstock.
Movement was southeast at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Del Rio, Comstock, Loma Alta, Lake View, Amistad Acres, Carta Valley,
Amistad Village, Black Brush Point, Seminole Canyon State Park, Box
Canyon, Diablo East, Governors Landing, Long Point, Cienegas Terrace,
Pecos River Boat Ramp, 277 South Boat Ramp, 277 North Campground,
Rough Canyon Recreation Area, Spur 406 Campground, and Rock Quarry
Campground.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
If on or near Lake Amistad, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
south central Texas.
&&
LAT...LON 3009 10093 2978 10055 2936 10097 2937 10101
2946 10106 2947 10115 2952 10117 2954 10126
2957 10124 2962 10125 2963 10127 2958 10128
2958 10131 2965 10130 2966 10134 2965 10136
2968 10137 2970 10137
TIME...MOT...LOC 2336Z 304DEG 22KT 2991 10090 2969 10113
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH
PlattSpecial Weather Statement
National Weather Service Austin/San Antonio TX
801 PM CDT Sun May 10 2026
TXZ184>188-110145-
Gillespie TX-Kerr TX-Edwards TX-Real TX-Bandera TX-
801 PM CDT Sun May 10 2026
...Strong thunderstorms will impact portions of northwestern Bandera,
Kerr, Gillespie, northeastern Edwards and northeastern Real Counties
through 845 PM CDT...
At 800 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Castell to 14 miles southeast of Yates
Crossing to near Telegraph. Movement was southeast at 45 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 damage to outdoor objects is
possible.
Locations impacted include...
Kerrville, Fredericksburg, Ingram, Hunt, Stonewall, Cherry Spring,
Luckenbach, Cain City, Tivydale, Doss, Willow City, Rocky Hill, LBJ
State Park, Kerr Wildlife Management Area, Waltonia, Harper, Mountain
Home, Blumenthal, Eckert, and Crabapple.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
south central Texas.
&&
LAT...LON 3049 9860 3022 9859 3014 9882 3014 9892
3010 9892 2975 9984 3028 9995 3029 9930
3050 9930
TIME...MOT...LOC 0100Z 332DEG 40KT 3065 9901 3045 9943 3031 9996
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
PlattSpecial Weather Statement
National Weather Service Austin/San Antonio TX
804 PM CDT Sun May 10 2026
TXZ193-110145-
Bastrop TX-
804 PM CDT Sun May 10 2026
...A strong thunderstorm will impact portions of central Bastrop
County through 845 PM CDT...
At 803 PM CDT, Doppler radar was tracking a strong thunderstorm near
Rosanky, or 9 miles south of Bastrop, moving north at 15 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Bastrop, Rosanky, Wyldwood, Circle D-KC Estates, Upton, Red Rock,
Bastrop State Park, Hills Prairie, Rockne, Watterson, Alum Creek, and
Buescher State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Austin San Antonio.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
south central Texas.
&&
LAT...LON 2991 9725 2991 9745 3014 9748 3014 9715
TIME...MOT...LOC 0103Z 182DEG 11KT 2997 9734
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
CMThe Ft Hood radar (KGRK), 123 km away, was scanning. The volume nearest the first event began at 01:17 UTC.
14 thunderstorm wind, 4 hail. Local standard time, as filed.
A CoCoRaHS observer reported hail ranging from a quarter-inch to 1 inch lasting for 5 to 7 minutes.
A photograph of hail 1.5 inches in diameter was received on social media.
Up to quarter-sized hail was reported in Burnet.
Quarter-sized hail was reported on State Highway 195 between Florence and Sun City.
A 56 kt gust was recorded by the AWOS at Georgetown Municipal Airport from a line of severe thunderstorms.
Strong thunderstorm wind gusts downed large tree limbs in the Steiner Ranch area.
Strong thunderstorm winds downed trees and snapped tree limbs across North Austin. Some power lines were downed.
Numerous medium to large tree limbs were downed by strong thunderstorm winds across South Austin.
A large snapped tree limb was observed in Pflugerville.
A 56 kt gust was recorded by the ASOS at Austin-Bergstrom International Airport from a line of severe thunderstorms.
Power lines were downed across the Austin metropolitan area from strong thunderstorm winds and downed trees. Over 18,000 electricity customers lost power during the storms.
A 53 kt wind gust was recorded by an Edwards Aquifer Authority mesonet station along Parkers Creek.
A 65 kt gust was recorded by the ASOS at South Texas Regional Airport from a line of severe thunderstorms.
A CoCoRaHS observer observed a 58 mph wind gust shortly before the arrival of thunderstorms.
A deck awning was blown down by strong thunderstorm winds.
Thunderstorm winds snapped large tree limbs near Frost Bank Center.
Thunderstorm winds resulted in isolated instances of downed trees and signage around Bastrop.
A tin outbuilding was destroyed by strong thunderstorm winds near Charlotte, leaving behind partly crumbled metal sheeting.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2026Every state in 2026This day in weather historyWarnings in Texas, May 2026
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: 1334994, 1334995, 1334996, 1334997, 1335011, 1334998, 1334999, 1335000, 1335001, 1335012, 1335004, 1335015, 1335017, 1335018, 1335005, 1335006, 1335007, 1335010.