Alert archive / Texas / Excessive Heat Warnings in 2023

Excessive Heat Warning 2, NWS Austin/San Antonio, TX

June 16, 202333 counties in Texas

NWS Austin/San Antonio, TX issued this excessive heat warning at Jun 16, 2023, 9:55 AM CDT for 33 counties in Texas. It was in force for 5 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 16, 2023, 9:55 AM CDT (14:55 UTC)
Expired: Jun 21, 2023, 9:00 PM CDT
In force: 5 days
Issued by: NWS Austin/San Antonio, TX

All 33 counties

Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Dimmit County, TX, Edwards County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lavaca County, TX, Lee County, TX, Llano County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX

The radar

The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 14:54 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, 2.9 hours before the alert went out and 218 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 3139 J/kg
Mixed-layer CIN: -327 J/kg
Mixed-layer LCL: 1478 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

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 16, 5:59 AM CDT, 3 hours 56 minutes earlier.

Area forecast discussion, Jun 16, 5:59 AM CDT, 3 hours 56 minutes before

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Hazardous weather outlook, Jun 16, 3:31 AM CDT, 6 hours 24 minutes before

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The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 7:24 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	19 min
Jun 16, 4:54 PM CDT	Special Weather Statement	EWX	Gillespie	51 min
Jun 16, 5:15 PM CDT	Special Weather Statement	EWX	Llano	45 min
Jun 16, 5:45 PM CDT	Special Weather Statement	EWX	Gillespie	45 min
Jun 16, 5:52 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	38 min
Jun 16, 6:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EWX	Gillespie, Kendall, Kerr	16 min
Jun 16, 6:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EWX	Gillespie, Kendall, Kerr	49 min
Jun 16, 6:30 PM CDT	Areal Flood Advisory	EWX	Gillespie	3 hr
Jun 16, 6:52 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Kendall, Kerr	53 min

Nearby

Excessive Heat Warnings in Texas, 2023 Every 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.