Alert archive / Texas / Special Weather Statements in 2016

Special Weather Statement, NWS Austin/San Antonio, TX

April 17, 2016Blanco County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Apr 17, 2016, 3:18 PM CDT for Blanco County, Texas. It was in force for 27 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: Apr 17, 2016, 3:18 PM CDT (20:18 UTC)
Expired: Apr 17, 2016, 3:45 PM CDT
In force: 27 min
Issued by: NWS Austin/San Antonio, TX

County Blanco County, TX

The radar

The Ft Hood radar (KGRK), 67 km from the middle of the area, began a volume at 20:22 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

Fort Worth, TX (KFWD), launched 12:00Z, 8.3 hours before the alert went out and 262 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 383 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 Apr 17, 1:20 PM CDT, 1 hour 58 minutes earlier.

Area forecast discussion, Apr 17, 1:20 PM CDT, 1 hour 58 minutes before

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Hazardous weather outlook, Apr 17, 5:18 AM CDT, 10 hours before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
518 AM CDT SUN APR 17 2016

TXZ171>173-183>194-202>209-217>225-228-181030-
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-
518 AM CDT SUN APR 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

...A FLASH FLOOD WATCH IS IN EFFECT FROM 10AM SUNDAY TO 10AM
TUESDAY FOR MOST OF SOUTH CENTRAL TEXAS...

.DAY ONE...TODAY AND TONIGHT.

HEAVY RAINFALL WILL LIKELY LEAD TO AREAS OF RIVER AND FLASH
FLOODING ACROSS SOUTH CENTRAL TEXAS TODAY...INCLUDING BOTH THE
AUSTIN AND SAN ANTONIO METRO AREAS. THE MOST CONCERNING LOCATIONS
ARE ALONG AND EAST OF A KERRVILLE TO PEARSALL LINE. ON
AVERAGE...THIS AREA IS LIKELY TO RECEIVE 3 TO 6 INCHES WITH
ISOLATED HIGHER AMOUNTS OF 8 TO 12 INCHES POSSIBLE. IMPACTS WILL
BE GREATER IN THE LOCALIZED HIGHER AMOUNTS THAT ARE EXPECTED TO BE
NORTH OF I-10 AND EAST OF U.S. HIGHWAY 281. LOWER AMOUNTS OF
RAINFALL ARE EXPECTED FARTHER WEST ACROSS THE RIO GRANDE PLAINS
AND EDWARDS PLATEAU BUT ENOUGH COULD FALL TO CAUSE LOCALIZED
FLOODING ISSUES THERE AS WELL. PLEASE STAY ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS.

IN ADDITION TO THE THREAT OF HEAVY RAINFALL...THERE IS A SLIGHT
RISK FOR SEVERE THUNDERSTORMS. DAMAGING WIND GUSTS WILL BE THE
MAIN SEVERE WEATHER CONCERN. HOWEVER...AN ISOLATED TORNADO CAN NOT
BE RULED OUT ON SUNDAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THE STORM COMPLEX RESULTING IN HEAVY RAINS SUNDAY WILL CONTINUE TO
PRODUCE HEAVY RAINFALL POSSIBILITIES THROUGH MONDAY AND INTO
MONDAY NIGHT. ANY ADDITIONAL HEAVY RAINFALL ON MONDAY WILL LEAD TO
POSSIBLE RAPID FLASH FLOODING OR WORSEN ANY ONGOING FLOODING THAT
MAY DEVELOP TODAY.

IN ADDITION TO THE THREAT OF HEAVY RAINFALL...THERE IS A SLIGHT
RISK FOR SEVERE THUNDERSTORMS. DAMAGING WIND GUSTS AND QUARTER
SIZED HAIL WILL BE THE MAIN SEVERE WEATHER CONCERNS. AN ISOLATED
TORNADO CAN ALSO NOT BE RULED OUT ON MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED TODAY AND MONDAY.

TB3

In the hours before

Local storm report, Apr 17, 2:58 PM CDT, 20 minutes before

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Local storm report, Apr 17, 3:04 PM CDT, 14 minutes before

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Special weather statement, Apr 17, 3:09 PM CDT, 9 minutes before

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Local storm report, Apr 17, 3:10 PM CDT, 8 minutes before

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Local storm report, Apr 17, 3:15 PM CDT, 3 minutes before

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Special weather statement, Apr 17, 3:18 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
Apr 17, 3:53 AM CDT	Special Weather Statement	EWX	Edwards	67 min
Apr 17, 6:30 AM CDT	Areal Flood Advisory	EWX	Edwards, Val Verde	3 hr
Apr 17, 8:56 AM CDT	Special Weather Statement	EWX	Real	64 min
Apr 17, 10:03 AM CDT	Areal Flood Advisory	EWX	Edwards, Kinney	3 hr
Apr 17, 11:11 AM CDT	River Flood Warning	EWX	Val Verde	23 hr
Apr 17, 12:10 PM CDT	Areal Flood Advisory	EWX	Bastrop, Lee	3 hr
Apr 17, 12:30 PM CDT	Special Weather Statement	EWX	Uvalde	45 min
Apr 17, 12:48 PM CDT	Flash Flood Warning	EWX	Bastrop	6 hr
Apr 17, 1:15 PM CDT	Special Weather Statement	EWX	Real	45 min
Apr 17, 1:59 PM CDT	Special Weather Statement	EWX	Real	46 min
Apr 17, 2:23 PM CDT	Areal Flood Advisory	EWX	Travis, Williamson	6 hr
Apr 17, 2:27 PM CDT	Areal Flood Advisory	EWX	Real, Uvalde	3 hr
Apr 17, 2:51 PM CDT	Areal Flood Advisory	EWX	Hays, Travis	3 hr
Apr 17, 3:09 PM CDT	Special Weather Statement	EWX	Bexar	51 min
Apr 17, 3:34 PM CDT	Special Weather Statement	EWX	Atascosa	26 min
Apr 17, 4:00 PM CDT	Special Weather Statement	EWX	Bexar	45 min
Apr 17, 4:04 PM CDT	Special Weather Statement	EWX	Atascosa	41 min
Apr 17, 4:14 PM CDT	Tornado Warning	EWX	Atascosa	31 min
Apr 17, 4:23 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Kendall	52 min
Apr 17, 4:31 PM CDT	Special Weather Statement	EWX	Williamson	44 min
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	Gonzales	4 days
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	DeWitt	24 hr
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	Comal, Guadalupe	26 hr
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	Comal, Gonzales, Guadalupe	20 hr
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	Comal, Guadalupe	29 hr
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	Hays	35 hr
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	Caldwell, Gonzales	3 days
Apr 17, 4:41 PM CDT	River Flood Warning	EWX	Caldwell, Gonzales	46 hr
Apr 17, 4:45 PM CDT	Areal Flood Advisory	EWX	Bexar, Comal, Kendall	3 hr
Apr 17, 4:45 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	45 min
Apr 17, 5:10 PM CDT	Special Weather Statement	EWX	Gillespie	50 min
Apr 17, 5:13 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kendall, Kerr	22 min
Apr 17, 5:15 PM CDT	Areal Flood Advisory	EWX	Williamson	3 hr
Apr 17, 5:26 PM CDT	Special Weather Statement	EWX	Frio	34 min
Apr 17, 5:27 PM CDT	River Flood Warning	EWX	Bexar	34 hr
Apr 17, 5:27 PM CDT	River Flood Warning	EWX	Bexar	58 hr
Apr 17, 5:27 PM CDT	River Flood Warning	EWX	Bexar	36 hr
Apr 17, 5:27 PM CDT	River Flood Warning	EWX	Bexar, Guadalupe	32 hr
Apr 17, 5:27 PM CDT	River Flood Warning	EWX	Bexar, Wilson	59 hr
Apr 17, 5:27 PM CDT	River Flood Warning	EWX	Karnes	4 days
Apr 17, 5:45 PM CDT	Severe Thunderstorm Warning	EWX	Frio	30 min
Apr 17, 5:48 PM CDT	Special Weather Statement	EWX	Kendall	27 min
Apr 17, 5:52 PM CDT	Flash Flood Warning	EWX	Williamson	4 hr
Apr 17, 6:15 PM CDT	Special Weather Statement	EWX	Bandera	30 min
Apr 17, 6:30 PM CDT	Special Weather Statement	EWX	Medina	30 min
Apr 17, 6:44 PM CDT	Special Weather Statement	EWX	Bandera	31 min
Apr 17, 6:59 PM CDT	Special Weather Statement	EWX	Uvalde	31 min

Nearby

Special Weather Statements in Texas, 2016 Every special weather statement in 2016

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.