Alert archive / Texas / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 127, NWS Austin/San Antonio, TX

April 28, 2006Kinney County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 28, 2006, 11:56 PM CDT for Kinney County, Texas. It was in force for 64 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: Apr 28, 2006, 11:56 PM CDT (04:56 UTC)
Expired: Apr 29, 2006, 1:00 AM CDT
In force: 64 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Kinney County, TX

The radar

The Laughlin AFB radar (KDFX), 16 km from the middle of the area, began a volume at 04:56 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 7:43 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 4.9 hours before the alert went out and 41 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: 1904 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1541 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 367 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 7.4

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 Apr 28, 11:50 PM CDT, 6 minutes earlier.

Area forecast discussion, Apr 28, 11:50 PM CDT, 6 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1150 PM CDT FRI APR 28 2006

.AVIATION...
THE DRY LINE NEAR KDRT-KJCT WILL ADVANCE EASTWARD ACROSS THE HILL
COUNTRY AND SOUTH CENTRAL TEXAS THRU 12Z PRODUCING A SQUALL LINE
WITH THE POTENTIAL FOR SEVERE TSRA. SOUTHEAST SURFACE WINDS OF 15-
25 KTS WILL PREVAIL AHEAD OF THE DRY LINE WITH MVFR CIGS PREVAILING.
SKIES WILL CLEAR FROM THE WEST BEHIND THE DRY LINE/SQUALL LINE
WITH GUSTY NORTHWEST WINDS OF 15-25 KTS.

&&

.PREV DISCUSSION... (ISSUED 1140 PM CDT FRI APR 28 2006)

UPDATE...
UPDATES ZONES TO INCLUDE MAVERICK, ZAVALA, DIMMIT AND FRIO
COUNTIES IN TORNADO WATCH #259.

PREV DISCUSSION... (ISSUED 834 PM CDT FRI APR 28 2006)

UPDATE...
ISOLATED SEVERE THUNDERSTORMS HAVE FIRED OVER THE HILL COUNTRY.
FARTHER WEST, THE DRY LINE IS BREEDING MORE THUNDERSTORMS AND
MOVING EAST AT 15 MPH. AT THIS RATE, THE LINE OF SHOWERS AND
THUNDERSTORMS WILL MOVE THRU DEL RIO AROUND MIDNIGHT, 4AM EAGLE
PASS, LEAKEY, LLANO 8AM PARALLELING I-35. WITH THE MOIST TAP FROM
THE PACIFIC AND GULF, AND PRECIPITABLE WATER VALUES APPROACHING
1.5 INCHES, WE CAN EXPECT DRENCHING RAINS WITH THE THUNDERSTORMS.
NO UPDATES TO THE FORECAST AT THIS TIME.

PREV DISCUSSION... (ISSUED 332 PM CDT FRI APR 28 2006)

DISCUSSION...
AREA NATIONAL WEATHER SERVICE RADAR INDICATES SEVERE THUNDERSTORMS
ALREADY DEVELOPING IN WESTERN VAL VERDE COUNTY. ATMOSPHERIC
INSTABILITY WILL CONTINUE TO INCREASE THROUGH THE REST OF THE DAY
AHEAD OF THE UPPER TROUGH CURRENTLY OVER THE NM/TX/MEX BORDER.
THIS INSTABILITY COUPLED WITH ABUNDANT MOISTURE AND GOOD VERTICAL
SHEAR WILL ALLOW DEVELOPING STORMS TO RAPIDLY INTENSIFY INTO
SUPERCELLS WITH DAMAGING WINDS AND LARGE HAIL. THIS ENVIRONMENT
WILL ALSO FAVOR THE POTENTIAL FOR ISOLATED TORNADOS. THE STORMS
WILL FOCUS ALONG THE DRY-LINE BOUNDARY AND PROGRESS EASTWARD
THROUGH EARLY SATURDAY MORNING...AND SHOULD EXIT THE EASTERN-MOST
COUNTIES OF THE CWA BY NOON.

AS THE TROF AXIS CONTINUES TO MOVE EASTWARD, NORTHWEST WINDS WILL
BRING DRY SFC CONDITIONS ALLOWING FOR A WARM AFTERNOON. DRY CONDITIONS
WILL CONTINUE THROUGH THE WEEKEND...RESULTING IN WARM AFTERNOONS
AND MILD NIGHTS. WINDS WILL BEGIN TO SHIFT TO SE-S SUNDAY
AFTERNOON DRAWING IN GULF MOISTURE. THIS WILL LEAD TO INCREASING
HUMIDITIES AND CLOUDS THROUGH MID-WEEK. NEXT BEST CHANCE FOR
RAIN WILL BE THE END OF NEXT WEEK AS ANOTHER FRONTAL BOUNDARY
DRAPES ACROSS THE REGION.

EWX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

06/01

Hazardous weather outlook, Apr 28, 4:27 PM CDT, 7 hours 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
427 PM CDT FRI APR 28 2006

TXZ171>173-183>194-202>209-217>225-228-291100-
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-
427 PM CDT FRI APR 28 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TONIGHT
ISOLATED SEVERE THUNDERSTORMS WILL CONTINUE LATE THIS AFTERNOON
INTO THE EVENING HOURS. BY LATE EVENING...THE STORMS WILL ORGANIZE
INTO A SQUALL LINE THAT WILL MOVE EAST ACROSS THE AREA DURING THE
OVERNIGHT AND EARLY MORNING HOURS. LARGE HAIL...DAMAGING WINDS AND
ISOLATED TORNADOES CAN BE EXPECTED.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
THE SQUALL LINE WILL BE ONGOING EARLY IN THE MORNING BEFORE MOVING
INTO SOUTHEAST TEXAS BY NOON. LARGE HAIL AND DAMAGING WINDS CAN BE
EXPECTED.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT INTO EARLY SATURDAY.

In the hours before

Local storm report, Apr 28, 8:52 PM CDT, 3 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
852 PM CDT FRI APR 28 2006

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

0833 PM     HAIL             5 N WILLOW CITY         30.47N 98.70W
04/28/2006  E1.50 INCH       GILLESPIE          TX   BROADCAST MEDIA

&&

JPB

Local storm report, Apr 28, 9:50 PM CDT, 2 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
950 PM CDT FRI APR 28 2006

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

0925 PM     HAIL             MARBLE FALLS            30.58N 98.27W
04/28/2006  M1.50 INCH       BURNET             TX   BROADCAST MEDIA

0925 PM     TSTM WND DMG     MARBLE FALLS            30.58N 98.27W
04/28/2006                   BURNET             TX   BROADCAST MEDIA

            POWER LINES DOWN

&&

JPB

Local storm report, Apr 28, 10:56 PM CDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1056 PM CDT FRI APR 28 2006

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

1034 PM     HAIL             FREDERICKSBURG          30.27N 98.87W
04/28/2006  E0.88 INCH       GILLESPIE          TX   FIRE DEPT/RESCUE

&&

JPB

Local storm report, Apr 28, 11:33 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1133 PM CDT FRI APR 28 2006

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

0945 PM     HAIL             4 W MOUNTAIN HOME       30.17N 99.43W
04/28/2006  M0.75 INCH       KERR               TX   TRAINED SPOTTER

&&

JPB

Local storm report, Apr 28, 11:38 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1138 PM CDT FRI APR 28 2006

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

1135 PM     HAIL             7 S HARPER              30.20N 99.25W
04/28/2006  E0.75 INCH       GILLESPIE          TX   TRAINED SPOTTER

0945 PM     HAIL             3 NNW MOUNTAIN HOME     30.21N 99.39W
04/28/2006  E0.75 INCH       KERR               TX   TRAINED SPOTTER

&&

JPB

Local storm report, Apr 28, 11:50 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1150 PM CDT FRI APR 28 2006

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

1141 PM     HAIL             DEL RIO                 29.38N 100.90W
04/28/2006  M0.75 INCH       VAL VERDE          TX   LAW ENFORCEMENT

&&

JPB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 7:04 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	56 min
Apr 28, 7:20 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	55 min
Apr 28, 7:57 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	63 min
Apr 28, 8:06 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	39 min
Apr 28, 8:25 PM CDT	Severe Thunderstorm Warning	EWX	Llano	65 min
Apr 28, 8:43 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	32 min
Apr 28, 8:44 PM CDT	Severe Thunderstorm Warning	EWX	Blanco	46 min
Apr 28, 8:55 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kerr, Real	35 min
Apr 28, 8:58 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	62 min
Apr 28, 9:22 PM CDT	Tornado Warning	EWX	Burnet	23 min
Apr 28, 9:28 PM CDT	Severe Thunderstorm Warning	EWX	Kerr	62 min
Apr 28, 9:41 PM CDT	Severe Thunderstorm Warning	EWX	Travis, Williamson	23 min
Apr 28, 9:43 PM CDT	Tornado Warning	EWX	Kerr	32 min
Apr 28, 9:53 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	67 min
Apr 28, 10:08 PM CDT	Severe Thunderstorm Warning	EWX	Llano	52 min
Apr 28, 10:15 PM CDT	Tornado Warning	EWX	Kerr	30 min
Apr 28, 10:23 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet	67 min
Apr 28, 11:05 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	55 min
Apr 28, 11:12 PM CDT	Severe Thunderstorm Warning	EWX	Travis, Williamson	48 min
Apr 28, 11:25 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	50 min
Apr 28, 11:31 PM CDT	Severe Thunderstorm Warning	EWX	Blanco	44 min
Apr 29, 1:45 AM CDT	Severe Thunderstorm Warning	EWX	Williamson	60 min
Apr 29, 11:45 AM CDT	Red Flag Warning	EWX	Atascosa, Dimmit, Frio, Maverick, Zavala	4 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2006 Every severe thunderstorm warning in 2006

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.