Alert archive / Texas / Special Weather Statements in 2020

Special Weather Statement, NWS Austin/San Antonio, TX

August 2, 2020Hays County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Aug 2, 2020, 2:18 PM CDT for Hays County, Texas. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 2, 2020, 2:18 PM CDT (19:18 UTC)
Expired: Aug 2, 2020, 3:00 PM CDT
In force: 42 min
Issued by: NWS Austin/San Antonio, TX

County Hays County, TX

The radar

The Austin/San Antonio radar (KEWX), 22 km from the middle of the area, began a volume at 19:19 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 12:00Z, 7.3 hours before the alert went out and 245 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: 1512 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 841 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: -43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 2, 2:16 PM CDT, 2 minutes earlier.

Area forecast discussion, Aug 2, 2:16 PM CDT, 2 minutes before

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Hazardous weather outlook, Aug 2, 3:48 AM CDT, 10 hours 30 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
348 AM CDT Sun Aug 2 2020

TXZ171>173-183>194-202>209-217>225-228-030900-
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-
348 AM CDT Sun Aug 2 2020

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

.DAY ONE...Today And Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Aug 2, 12:47 PM CDT, 1 hour 31 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
1247 PM CDT Sun Aug 2 2020

TXZ192-021830-
Travis TX-
1247 PM CDT Sun Aug 2 2020

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL TRAVIS COUNTY UNTIL
130 PM CDT...

At 1247 PM CDT, Doppler radar was tracking a strong thunderstorm over
Mansfield Dam, or 10 miles southwest of Anderson Mill, moving south
at 10 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Austin, Lakeway, Lago Vista, Bee Cave, West Lake Hills, Hudson Bend,
The Hills, Rollingwood, Bear Creek, Barton Creek, Mansfield Dam,
Shady Hollow, Point Venture, Sunset Valley and Lost Creek.

LAT...LON 3043 9786 3019 9776 3017 9791 3021 9797
      3023 9799 3041 9800
TIME...MOT...LOC 1747Z 348DEG 10KT 3036 9793

KCW

Special weather statement, Aug 2, 1:16 PM CDT, 1 hour 2 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
116 PM CDT Sun Aug 2 2020

TXZ192-193-208-021900-
Caldwell TX-Bastrop TX-Travis TX-
116 PM CDT Sun Aug 2 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CALDWELL...SOUTH
CENTRAL TRAVIS AND WEST CENTRAL BASTROP COUNTIES UNTIL 200 PM CDT...

At 116 PM CDT, Doppler radar was tracking a strong thunderstorm over
Austin Bergstrom Int Airport, moving southeast at 20 mph.

Half inch hail will be possible with this storm.

Locations impacted include...
Austin, Austin Bergstrom Int Airport, Mustang Ridge, Niederwald,
Onion Creek, Creedmoor, McKinney Falls State Park, Maha, Del Valle,
Mendoza, Pilot Knob and Garfield.

LAT...LON 3000 9746 2996 9773 3000 9775 3003 9771
      3007 9778 3019 9783 3029 9766
TIME...MOT...LOC 1816Z 329DEG 18KT 3018 9771

KCW

Special weather statement, Aug 2, 1:29 PM CDT, 49 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
129 PM CDT Sun Aug 2 2020

TXZ191-206-207-021915-
Guadalupe TX-Comal TX-Hays TX-
129 PM CDT Sun Aug 2 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL HAYS...NORTHERN
GUADALUPE AND EAST CENTRAL COMAL COUNTIES UNTIL 215 PM CDT...

At 129 PM CDT, Doppler radar was tracking a strong thunderstorm near
Woodcreek, or near Wimberley, moving south at 20 mph.

Half inch hail will be possible with this storm.

Locations impacted include...
San Marcos, Kyle, Wimberley, Woodcreek, Staples, Hunter, Hays City,
Redwood and San Marcos Regional Airport.

LAT...LON 2990 9786 2988 9789 2986 9790 2986 9788
      2984 9785 2983 9784 2980 9784 2979 9783
      2978 9783 2979 9782 2977 9781 2976 9810
      3009 9815 3013 9795
TIME...MOT...LOC 1829Z 347DEG 19KT 3004 9804

KCW

Special weather statement, Aug 2, 1:47 PM CDT, 31 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
147 PM CDT Sun Aug 2 2020

TXZ191-192-208-021930-
Caldwell TX-Hays TX-Travis TX-
147 PM CDT Sun Aug 2 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CALDWELL...
SOUTHEASTERN HAYS AND SOUTH CENTRAL TRAVIS COUNTIES UNTIL 230 PM
CDT...

At 147 PM CDT, Doppler radar was tracking a strong thunderstorm over
Buda, moving south at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Austin, San Marcos, Kyle, Buda, Lockhart, Martindale, Uhland, Mustang
Ridge, Niederwald, Onion Creek, Manchaca, Mountain City, San Leanna,
Hays, Creedmoor, San Marcos Regional Airport, Maxwell, Reehdville
and Redwood.

LAT...LON 2986 9762 2980 9784 2981 9785 2983 9784
      2985 9786 2985 9789 2982 9792 2983 9792
      3011 9797 3017 9777
TIME...MOT...LOC 1847Z 343DEG 14KT 3008 9786

KCW

Local storm report, Aug 2, 2:04 PM CDT, 14 minutes before

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Special weather statement, Aug 2, 2:18 PM CDT, 0 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
Aug 2, 12:32 PM CDT	Special Weather Statement	EWX	Travis	43 min
Aug 2, 12:47 PM CDT	Special Weather Statement	EWX	Travis	43 min
Aug 2, 1:16 PM CDT	Special Weather Statement	EWX	Travis	44 min
Aug 2, 1:29 PM CDT	Special Weather Statement	EWX	Hays	46 min
Aug 2, 1:47 PM CDT	Special Weather Statement	EWX	Caldwell	43 min
Aug 2, 1:51 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Guadalupe, Hays	35 min
Aug 2, 2:25 PM CDT	Special Weather Statement	EWX	Caldwell, Gonzales, Guadalupe	35 min
Aug 2, 2:46 PM CDT	Special Weather Statement	EWX	Kinney	29 min
Aug 2, 3:10 PM CDT	Special Weather Statement	EWX	Comal	50 min
Aug 2, 3:23 PM CDT	Special Weather Statement	EWX	Guadalupe	52 min
Aug 2, 3:50 PM CDT	Special Weather Statement	EWX	Fayette	40 min
Aug 2, 4:24 PM CDT	Special Weather Statement	EWX	Karnes	51 min
Aug 2, 4:25 PM CDT	Special Weather Statement	EWX	Lee	50 min
Aug 2, 4:40 PM CDT	Special Weather Statement	EWX	Bexar	50 min
Aug 2, 5:10 PM CDT	Special Weather Statement	EWX	Fayette	35 min
Aug 2, 5:39 PM CDT	Special Weather Statement	EWX	Fayette	51 min

Nearby

Special Weather Statements in Texas, 2020 Every special weather statement in 2020

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.