Alert archive / Texas / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 98, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 9, 2024, 6:29 PM CDT for Llano County, Texas. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 9, 2024, 6:29 PM CDT (23:29 UTC)
- Expired
- May 9, 2024, 7:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Llano County, TX
The radar
The Ft Hood radar (KGRK), 124 km from the middle of the area, began a volume at 23:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 9, 5:46 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.5 hours before the alert went out and 255 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 4728 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 693 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- 5.5
- Supercell composite
- 32.6
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at May 9, 5:56 PM CDT, 33 minutes earlier.
Area forecast discussion, May 9, 5:56 PM CDT, 33 minutes before
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</html>Hazardous weather outlook, May 9, 5:12 AM CDT, 13 hours 17 minutes before
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 512 AM CDT Thu May 9 2024 TXZ171>173-183>194-202>209-217>225-228-101015- 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- 512 AM CDT Thu May 9 2024 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...Today And Tonight. Areas of fog can be expected across south central Texas this morning. Some dense fog is possible from the Hill Country into the Interstate 35 corridor. There is a risk for strong to severe storms for areas along and northeast of a Rocksprings to San Antonio to Cuero line this afternoon and evening. Large, possibly very large hail and damaging winds are the main severe weather threats. In addition, a tornado can't be ruled out. Hot and humid conditions continue today, with high temperatures ranging from near 90 to near 106 across the Rio Grande Plains. Heat index values up to 108 are expected with the highest values near the Coastal Plains. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
In the hours before
Special weather statement, May 9, 2:27 PM CDT, 4 hours 2 minutes before
Special Weather Statement National Weather Service Austin/San Antonio TX 227 PM CDT Thu May 9 2024 TXZ202>205-217>222-228-092300- Kinney-Uvalde-Medina-Bexar-Maverick-Zavala-Frio-Atascosa-Wilson- Karnes-Dimmit- Including the cities of Brackettville, Uvalde, Hondo, San Antonio, Eagle Pass, Crystal City, Pearsall, Pleasanton, Floresville, Karnes City, and Carrizo Springs 227 PM CDT Thu May 9 2024 ...Elevated Heat Index Values this Afternoon... Hot and humid conditions will result in heat index values of 103 to 107 degrees this afternoon, with a few locations above this. These early season hot temperatures and high humidity may cause heat illness for those that are not acclimated to the heat or are not taking proper heat precautions. If spending time outdoors this afternoon drink plenty of water and take frequent breaks out of the heat and direct sun. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 3:12 AM CDT | Dense Fog Advisory | EWX | Bandera, Bastrop, Bexar, Caldwell, Comal, Fayette and 11 more | 5 hr |
| May 9, 5:51 PM CDT | Tornado Warning | EWX | Llano | 39 min |
| May 9, 6:44 PM CDT | Special Weather Statement | EWX | Blanco | 31 min |
| May 9, 6:58 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Gillespie, Llano | 62 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2024Every severe thunderstorm warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.