Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 17, NWS Austin/San Antonio, TX

March 2, 2023Gillespie County, Llano County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 2, 2023, 5:34 PM CST for Gillespie County, Llano County, Texas. It was in force for 56 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: Mar 2, 2023, 5:34 PM CST (23:34 UTC)
Expired: Mar 2, 2023, 6:30 PM CST
In force: 56 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Gillespie County, TX, Llano County, TX

The radar

The Austin/San Antonio radar (KEWX), 117 km from the middle of the area, began a volume at 23:34 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
Mar 2, 5:08 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.6 hours before the alert went out and 295 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: 229 J/kg
Mixed-layer CIN: -360 J/kg
Mixed-layer LCL: 1472 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 343 m²/s²
0-3 km storm-relative helicity: 436 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 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 Mar 2, 5:16 PM CST, 18 minutes earlier.

Area forecast discussion, Mar 2, 5:16 PM CST, 18 minutes before

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Hazardous weather outlook, Mar 2, 4:37 AM CST, 12 hours 57 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
437 AM CST Thu Mar 2 2023

TXZ171>173-183>194-202>209-217>225-228-031200-
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-
437 AM CST Thu Mar 2 2023

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...Today And Tonight.

A strong upper level system and accompanying cold front are
expected to move over the area late this afternoon. Scattered
showers and thunderstorms are possible across most of south
central Texas. Some of these could become strong to severe with
straight line winds, isolated tornadoes, and large hail possible.

In the wake of the cold front, strong, gusty northwesterly winds
and much drier air will move into the area. A High Wind Warning
and Wind Advisory are in effect for Thursday afternoon and
evening. Critical fire weather conditions are likely over the
Edwards Plateau and Rio Grande Plains Thursday and Thursday
evening. A Red Flag Warning is in effect.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Elevated fire weather conditions are possible in the Hill Country,
Edwards Plateau, and Rio Grande Plains Friday and Saturday for
mainly low humidity values.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Local storm report, Mar 2, 3:43 PM CST, 1 hour 51 minutes before

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Special weather statement, Mar 2, 4:03 PM CST, 1 hour 31 minutes before

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Local storm report, Mar 2, 4:10 PM CST, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
410 PM CST THU MAR 2 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0400 PM     NON-TSTM WND GST COMSTOCK                29.68N 101.17W
03/02/2023  M81 MPH          VAL VERDE          TX   MESONET

            A WEST TEXAS MESONET REPORTED SUSTAINED WIND
            OF 52 MPH WITH A PEAK GUST OF 81 MPH BEHIND
            A FRONT.

&&

EH

Special weather statement, Mar 2, 4:34 PM CST, 1 hour before

Special Weather Statement
National Weather Service Austin/San Antonio TX
434 PM CST Thu Mar 2 2023

TXZ184-022300-
Edwards TX-
434 PM CST Thu Mar 2 2023

...A strong thunderstorm will impact portions of northern Edwards
County through 500 PM CST...

At 434 PM CST, Doppler radar was tracking a strong thunderstorm 14
miles northwest of Rocksprings, moving northeast at 65 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...
Us-377 Near The Kimble-Edwards County Line.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3029 9978 3025 9975 2998 10047 3029 10062
TIME...MOT...LOC 2234Z 244DEG 56KT 3014 10041

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

RUNYEN

Local storm report, Mar 2, 4:53 PM CST, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
453 PM CST THU MAR 2 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0441 PM     NON-TSTM WND GST 3 N DEL RIO             29.40N 100.90W
03/02/2023  M73 MPH          VAL VERDE          TX   ASOS

            DEL RIO INTL (KDRT) GUSTED TO 73 MPH BEHIND
            FRONT. VISIBILITIES WITH BLOWING DUST ALSO
            REDUCED AT THE SITE TO 1/2 TO 3/4 OF A MILE.

&&

MB

Local storm report, Mar 2, 4:58 PM CST, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
458 PM CST THU MAR 2 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0448 PM     NON-TSTM WND GST 1 NNW LAUGHLIN AFB      29.37N 100.79W
03/02/2023  M62 MPH          VAL VERDE          TX   ASOS

            DEL RIO LAUGHLIN AFB (KDLF) GUSTED TO 62 MPH
            BEHIND FRONT.

&&

MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 1, 9:46 PM CST	Severe Thunderstorm Warning	EWX	Frio, Medina, Zavala	59 min
Mar 1, 10:40 PM CST	Severe Thunderstorm Warning Destructive damage threat	EWX	Atascosa, Frio	65 min
Mar 1, 11:39 PM CST	Severe Thunderstorm Warning Considerable damage threat	EWX	Atascosa, Karnes, Wilson	66 min
Mar 2, 12:38 AM CST	Severe Thunderstorm Warning Considerable damage threat	EWX	DeWitt, Karnes	67 min
Mar 2, 1:23 AM CST	Severe Thunderstorm Warning Considerable damage threat	EWX	DeWitt, Lavaca	15 min
Mar 2, 1:54 AM CST	Special Weather Statement	EWX	Bandera	51 min
Mar 2, 2:11 AM CST	Special Weather Statement	EWX	Comal	49 min
Mar 2, 2:39 AM CST	Special Weather Statement	EWX	Comal	51 min
Mar 2, 2:50 AM CST	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Comal, Kendall, Medina	55 min
Mar 2, 2:55 AM CST	Special Weather Statement	EWX	Caldwell	50 min
Mar 2, 3:34 AM CST	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Comal, Guadalupe, Hays	56 min
Mar 2, 4:23 AM CST	Special Weather Statement	EWX	Caldwell	52 min
Mar 2, 4:29 AM CST	Special Weather Statement	EWX	Blanco	46 min
Mar 2, 4:53 AM CST	Special Weather Statement	EWX	Gillespie	52 min
Mar 2, 4:59 AM CST	Severe Thunderstorm Warning	EWX	Blanco, Gillespie, Llano	46 min
Mar 2, 5:15 AM CST	Special Weather Statement	EWX	Williamson	45 min
Mar 2, 5:41 AM CST	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Gillespie, Llano, Travis	26 min
Mar 2, 6:06 AM CST	Special Weather Statement	EWX	Burnet	39 min
Mar 2, 3:34 PM CST	Special Weather Statement	EWX	Val Verde	26 min
Mar 2, 4:03 PM CST	Special Weather Statement	EWX	Val Verde	27 min
Mar 2, 4:34 PM CST	Special Weather Statement	EWX	Edwards	26 min
Mar 2, 4:42 PM CST	Severe Thunderstorm Warning	EWX	Edwards	33 min
Mar 2, 5:07 PM CST	Severe Thunderstorm Warning	EWX	Gillespie, Kerr	53 min
Mar 2, 5:11 PM CST	Severe Thunderstorm Warning	EWX	Edwards, Real	36 min
Mar 2, 5:59 PM CST	Severe Thunderstorm Warning Considerable damage threat	EWX	Gillespie	46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2023 Every severe thunderstorm 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.