A weak cold front moved through South Central Texas generating isolated thunderstorms. One of these storms produced a severe wind gust.
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The episode as NWS EWX wrote it up.
A weak cold front moved through South Central Texas generating isolated thunderstorms. One of these storms produced a severe wind gust.
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 Jul 24, 5:52 PM CST, 23 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 652 PM CDT Tue Jul 24 2018 .AVIATION... There are isolated thunderstorms in the DRT area and there will likely be a few lightning strikes during the next hour or so. Once these storms move away VFR conditions will prevail through the rest of the period. All other airports in the region will be VFR through this period. Winds will be 10 to 15 kts until around sunset. && .PREV DISCUSSION... /ISSUED 306 PM CDT Tue Jul 24 2018/ SHORT TERM (Tonight through Wednesday Night)... Higher dewpoints have pooled in some areas along and east of Interstate 35 bringing some high heat index values. Had to expand the Heat Advisory to some zones along and east of I-35 for this reason. The advisory will expire at 8 PM tonight along with the original few counties near San Antonio also under an advisory. A weak front has pushed through most if not all of the forecast area. The north winds are usually refreshing, but not today as hot air from the north continues its grip on South Central Texas. Actually have higher heat index values than we have seen the past few days when we had record heat. There were a few showers that developed this morning but they dissipated rather quickly. High res models still show some possible development well to the SE this afternoon and evening...then the SW Rio Grande area overnight. For this reason will be keeping in some low pop. The upper ridge will slowly move farther west over the next few days, and that should keep our temperatures and heat index values below heat advisory criteria as better mixing and lower daytime dewpoints work their way back into the forecast. Temps will still be hovering around 100 most areas...so still above normal. No measurable chance of rain on Wednesday. LONG TERM (Thursday through Tuesday)... As the upper low parks itself over Southern California by the end of the week, our area will keep dry with a return of the typical S and SE wind. Hot temps expected but nothing that looks extreme at this point. There are some shifts in the upper pattern that takes place late in the weekend which brings a small promise of rain chances early next week. The ridge amplifies out west...deepening a Central Plains and Midwest trough. Models show a cold front moving south into Texas Mon-Wed. For this reason have included some Slight to Chance pop early next week. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 77 99 78 101 76 / - - 0 0 0 Austin Bergstrom Intl Airport 75 99 76 100 74 / - - 0 0 0 New Braunfels Muni Airport 77 99 74 100 74 / 10 - 0 0 0 Burnet Muni Airport 76 99 74 100 74 / - - 0 0 0 Del Rio Intl Airport 81 102 79 103 77 / 20 - 0 0 0 Georgetown Muni Airport 75 100 75 101 75 / - - 0 0 0 Hondo Muni Airport 77 102 73 102 72 / 20 - 0 0 0 San Marcos Muni Airport 77 99 74 100 73 / 10 - 0 0 0 La Grange - Fayette Regional 77 98 74 100 74 / - - 0 0 0 San Antonio Intl Airport 78 99 76 100 75 / 10 - 0 0 0 Stinson Muni Airport 78 100 76 101 75 / 20 - 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM CDT this evening for Atascosa-Bastrop- Bexar-Caldwell-Comal-Fayette-Frio-Gonzales-Guadalupe-Hays-Medina- Uvalde-Wilson. && Mesoscale/Aviation...05 Synoptic/Grids...Oaks Public Service/Data Collection...YB
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 1249 PM CDT Tue Jul 24 2018 TXZ171>173-183>194-202>209-217>225-228-251800- Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde- Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala- Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit- 1249 PM CDT Tue Jul 24 2018 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...This Afternoon And Tonight. While not quite as hot as Monday, temperatures and heat indices this afternoon will remain well above normal. Heat indices may range from 106 to 112, mainly in areas along and east of interstate 35. There is a slight chance for an isolated shower or thunderstorm this afternoon and evening. Gusty winds will be possible with any storm that does form. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Above to well above normal daytime temperatures and heat indices will continue through Sunday. Take extra precautions if you must work or spend time outside. Wear light weight and loose fitting clothing, drink plenty of water, and take frequent breaks, preferably in an air conditioned area. When possible reschedule strenuous activities to the early morning or late evening hours. Young children, the elderly, and pets should never be left unattended in vehicles under any circumstances. This is especially true during hot weather when vehicle interiors can reach lethal temperatures in a matter of minutes. Look before you lock! .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
Special Weather Statement
National Weather Service Austin/San Antonio TX
330 PM CDT TUE JUL 24 2018
TXZ222-224-225-242130-
Karnes TX-Lavaca TX-De Witt TX-
330 PM CDT TUE JUL 24 2018
...SIGNIFICANT WEATHER ADVISORY FOR DEWITT...KARNES AND LAVACA
COUNTIES UNTIL 430 PM CDT...
At 329 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Karnes City, moving southwest at 15 mph.
Wind gusts up to 50 mph will be possible with this storm. Other
isolated thunderstorms from Gonzales to Halletsville may also
contain strong wind gusts as they move southwest at 15 mph.
Locations impacted include...
Cuero, Yoakum, Kenedy, Karnes City, Hallettsville, Yorktown, Shiner,
Runge, Nordheim, Sublime, Thomaston, Ezzell, Hochheim, Speaks,
Westhoff, Worthing, Coy City, Cotton Patch, Edgar and Terryville.
LAT...LON 2906 9694 2910 9698 2887 9730 2892 9743
2867 9778 2872 9792 2869 9801 2885 9815
2915 9765 2911 9761 2940 9724 2961 9688
2958 9679 2934 9656
TIME...MOT...LOC 2029Z 049DEG 14KT 2896 9781
MOSpecial Weather Statement
National Weather Service Austin/San Antonio TX
633 PM CDT TUE JUL 24 2018
TXZ183-202-250015-
Kinney TX-Val Verde TX-
633 PM CDT TUE JUL 24 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN KINNEY AND
SOUTHEASTERN VAL VERDE COUNTIES UNTIL 715 PM CDT...
At 631 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Comstock to near Cienegas Terrace to 9
miles south of Standart. Movement was southwest at 15 mph.
Wind gusts of 50 to 55 mph will be possible with these storms.
Locations impacted include...
Del Rio, Comstock, Lake View, Amistad Village, Amistad Recreation
Area - Governors Landing, Diablo East, Black Brush Point, Amistad
Acres, Laughlin AFB, Box Canyon, Amistad Recreation Area - Long
Point, Val Verde Park, Cienegas Terrace, Amistad Recreation Area -
Rock Quarry Campground, San Pedro Canyon, Rough Canyon, Spur 406
Campground, Salem Point and Amistad Recreation Area
- 277 South Boat Ramp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
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.
Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.
&&
LAT...LON 2963 10131 2976 10109 2942 10086 2919 10053
2910 10068 2912 10072 2917 10078 2920 10077
2926 10081 2936 10100 2946 10106 2947 10115
2952 10118 2953 10126 2962 10125 2963 10127
2958 10131
TIME...MOT...LOC 2331Z 066DEG 11KT 2968 10112 2940 10093 2921 10067The Laughlin AFB radar (KDFX), 49 km away, was scanning. The volume nearest the first event began at 00:12 UTC.
1 thunderstorm wind. Local standard time, as filed.
A thunderstorm produced a wind gust measured at 50 kts. by the ASOS at Laughlin AFB. No damage was reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2018Every state in 2018This day in weather historyWarnings in Texas, July 2018
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: 773718.