Alert archive / Texas / Excessive Heat Warnings in 2023
Excessive Heat Warning 3, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this excessive heat warning at Jun 21, 2023, 12:56 PM CDT for 5 counties in Texas. It took effect at Jun 22, 2023, 1:00 PM CDT. It was in force for 3 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 21, 2023, 12:56 PM CDT (17:56 UTC)
- In effect from
- Jun 22, 2023, 1:00 PM CDT
- Expired
- Jun 25, 2023, 9:00 PM CDT
- In force
- 3 days
- Issued by
- NWS Austin/San Antonio, TX
Counties Atascosa County, TX, Dimmit County, TX, Frio County, TX, Maverick County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 95 km from the middle of the area, began a volume at 17:56 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 nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 5.9 hours before the alert went out and 147 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
- 350 J/kg
- Mixed-layer CIN
- -640 J/kg
- Mixed-layer LCL
- 3049 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this excessive heat 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 excessive heat warning went out at Jun 21, 12:27 PM CDT, 29 minutes earlier.
Area forecast discussion, Jun 21, 12:27 PM CDT, 29 minutes before
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</html>Hazardous weather outlook, Jun 21, 9:37 AM CDT, 3 hours 19 minutes before
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 937 AM CDT Wed Jun 21 2023 TXZ171>173-183>194-202>209-217>225-228-221445- 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- 937 AM CDT Wed Jun 21 2023 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...This Afternoon And Tonight. A heatwave of historical significance continues today. Combined with humidity in place across the region, it will be difficult for folks to stay cool. Residents and visitors will need to take precautions to avoid heat-related illness. An Excessive Heat Warning is in effect for all of South Central Texas through this evening. Maximum heat indices of 105 to 118 degrees and high temperatures of 100 to 112 are expected. Confidence in scattered severe thunderstorms over Hill Country and portions of the I-35 Corridor later this afternoon and tonight has increased slightly. Two rounds of activity are possible. Isolated to widely scattered storms capable of large hail and damaging winds will be possible primarily over Hill Country during the 3-10 PM timeframe this afternoon. Additional storms may develop to our north in the Panhandle later this evening, potentially reaching areas primarily along and east of I-35 between midnight and 6 AM tomorrow morning. Damaging winds and large hail would also be possible in these storms. The Storm Prediction Center has introduced a level 2 out of 5 risk for severe thunderstorms over portions of Hill Country and the I-35 Corridor, and has expanded the level 1 out of 5 risk into the entirety of the Coastal Plains in light of this potential. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Slightly less hot temperatures are expected Thursday and Friday, then hotter temperatures return Saturday through Tuesday. A combination of hot temperatures and high humidity creating high heat indices will lead to Excessive Heat Warnings and/or Heat Advisories each day. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
In the hours before
Local storm report, Jun 21, 9:34 AM CDT, 3 hours 22 minutes before
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</html>The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 7:43 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 19 min |
| Jun 21, 12:56 PM CDT | Heat Advisory | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 6 days |
| Jun 21, 3:20 PM CDT | Special Weather Statement | EWX | Real | 40 min |
| Jun 21, 3:55 PM CDT | Special Weather Statement | EWX | Kimble | 50 min |
| Jun 21, 4:38 PM CDT | Special Weather Statement | EWX | Kerr | 52 min |
| Jun 21, 4:42 PM CDT | Special Weather Statement | EWX | Bandera | 48 min |
| Jun 21, 4:46 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Kerr | 59 min |
| Jun 21, 4:48 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Real | 57 min |
| Jun 21, 5:15 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie | 45 min |
| Jun 21, 5:29 PM CDT | Severe Thunderstorm Warning | EWX | Kerr | 46 min |
| Jun 21, 5:36 PM CDT | Special Weather Statement | EWX | Real | 39 min |
| Jun 21, 5:45 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Gillespie, Kendall, Kerr, Llano | 60 min |
| Jun 21, 5:53 PM CDT | Areal Flood Advisory | EWX | Bandera, Edwards, Kerr, Real, Uvalde | 3 hr |
| Jun 21, 5:55 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kinney, Real, Uvalde | 50 min |
| Jun 21, 6:19 PM CDT | Tornado Warning | EWX | Llano | 26 min |
| Jun 21, 6:30 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Comal, Gillespie, Hays, Kendall and 3 more | 42 min |
| Jun 21, 6:35 PM CDT | Areal Flood Advisory | EWX | Blanco, Burnet, Gillespie, Llano | 3 hr |
| Jun 21, 6:43 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Gillespie, Llano | 16 min |
| Jun 21, 6:47 PM CDT | Special Weather Statement | EWX | Uvalde | 43 min |
Nearby
Excessive Heat Warnings in Texas, 2023Every excessive heat warning in 2023
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.