Alert archive / Texas / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 157, NWS Austin/San Antonio, TX

October 28, 2022Burnet County, Gillespie County, Llano County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 28, 2022, 5:52 AM CDT for Burnet County, Gillespie County, Llano County, Texas. It was in force for 38 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: Oct 28, 2022, 5:52 AM CDT (10:52 UTC)
Expired: Oct 28, 2022, 6:30 AM CDT
In force: 38 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Burnet County, TX, Gillespie County, TX, Llano County, TX

The radar

The Austin/San Antonio radar (KEWX), 114 km from the middle of the area, began a volume at 10:54 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

Corpus Christi, TX (KCRP), launched 00:00Z, 10.9 hours before the alert went out and 342 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: 36 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 860 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Oct 28, 1:50 AM CDT, 4 hours 2 minutes earlier.

Area forecast discussion, Oct 28, 1:50 AM CDT, 4 hours 2 minutes before

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Hazardous weather outlook, Oct 28, 2:22 AM CDT, 3 hours 30 minutes before

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In the hours before

Special weather statement, Oct 28, 5:43 AM CDT, 9 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
543 AM CDT Fri Oct 28 2022

TXZ171-172-188-281130-
Gillespie TX-Llano TX-Burnet TX-
543 AM CDT Fri Oct 28 2022

...A strong thunderstorm will impact portions of north central
Gillespie, Llano and west central Burnet Counties through 630 AM
CDT...

At 542 AM CDT, Doppler radar was tracking a strong thunderstorm over
Castell, or 16 miles east of Mason, moving northeast at 35 mph.

HAZARD...Wind gusts up to 50 mph and penny size 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...
Kingsland, Llano, Buchanan Dam, Gainesville, Castell, Field Creek,
Inks Lake State Park, Lone Grove, Enchanted Rock State Natural Area,
Bluffton, Valley Spring, Baby Head, Prairie Mountain, Stolz and
Oxford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3076 9831 3043 9893 3050 9897 3092 9896
      3092 9861
TIME...MOT...LOC 1042Z 238DEG 31KT 3068 9897

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

MM

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 28, 5:43 AM CDT	Special Weather Statement	EWX	Llano	47 min
Oct 28, 6:26 AM CDT	Special Weather Statement	EWX	Medina	49 min
Oct 28, 6:30 AM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano, Travis, Williamson	45 min
Oct 28, 7:04 AM CDT	Special Weather Statement	EWX	Atascosa	11 min
Oct 28, 7:08 AM CDT	Special Weather Statement	EWX	Williamson	52 min
Oct 28, 7:13 AM CDT	Special Weather Statement	EWX	Atascosa	47 min
Oct 28, 7:45 AM CDT	Special Weather Statement	EWX	Travis, Williamson	45 min
Oct 28, 7:57 AM CDT	Wind Advisory	EWX	Dimmit, Edwards, Kinney, Maverick, Val Verde, Zavala	10 hr
Oct 28, 7:59 AM CDT	Special Weather Statement	EWX	Karnes	46 min
Oct 28, 8:45 AM CDT	Special Weather Statement	EWX	Karnes	45 min
Oct 28, 9:08 AM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Karnes	37 min
Oct 28, 9:21 AM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales, Karnes, Wilson	24 min

Nearby

Severe Thunderstorm Warnings in Texas, 2022 Every severe thunderstorm warning in 2022

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.