Alert archive / Texas / Tornado Warnings in 2015

Tornado Warning 7, NWS Brownsville, TX

September 11, 2015Willacy County, Texas

NWS Brownsville, TX issued this tornado warning at Sep 11, 2015, 5:37 PM CDT for Willacy County, Texas. It was in force for 23 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 11, 2015, 5:37 PM CDT (22:37 UTC)
Expired
Sep 11, 2015, 6:00 PM CDT
In force
23 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon

County Willacy County, TX

The radar

The Brownsville radar (KBRO), 63 km from the middle of the area, began a volume at 22:38 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.

What was reported inside it

TimeReportWhereRemark
Sep 11, 5:40 PM CDTTSTM WND DMG2 W San Perlita, TX2 POWER POLES DOWN AND 2 DAMAGED. ALONG HIGHWAY 186 NEAR WIND TURBINE FARM WEST OF SAN PERLITA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 10.6 hours before the alert went out and 65 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-pSkew-T log-p diagram, Brownsville Intl, TX at 12:00Z on 2015-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3607 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 12:00Z on 2015-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
3607 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
581 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

396 
WFUS54 KBRO 112237
TORBRO
TXC489-112300-
/O.NEW.KBRO.TO.W.0007.150911T2237Z-150911T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
537 PM CDT FRI SEP 11 2015

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE  HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL WILLACY COUNTY IN DEEP SOUTH TEXAS...

* UNTIL 600 PM CDT
    
* AT 536 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR WILLAMAR...OR NEAR LYFORD...AND MOVING
  SOUTHEAST AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WILLAMAR...PORFIRIO AND LOS COYOTES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 2642 9779 2653 9769 2641 9756 2632 9766
TIME...MOT...LOC 2236Z 306DEG 6KT 2643 9769 

$$

CASTILLO
1 follow-up statement
517 
WWUS54 KBRO 112301
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
601 PM CDT FRI SEP 11 2015

TXC489-112310-
/O.EXP.KBRO.TO.W.0007.000000T0000Z-150911T2300Z/
WILLACY TX-
601 PM CDT FRI SEP 11 2015

...THE TORNADO WARNING FOR CENTRAL WILLACY COUNTY HAS EXPIRED...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...LARGE HAIL AND DAMAGING WINDS REMAIN LIKELY
AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.
HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE
WITH THIS THUNDERSTORM.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
WILLACY COUNTY UNTIL 615 PM CDT.

LAT...LON 2642 9779 2653 9769 2641 9756 2632 9766
TIME...MOT...LOC 2256Z 306DEG 6KT 2643 9769 

$$

CASTILLO

The office that day

Everything else NWS Brownsville, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 10, 7:01 PM CDTSpecial Weather StatementBROJim Hogg44 min
Sep 10, 7:26 PM CDTAreal Flood AdvisoryBROBrooks, Jim Hogg94 min
Sep 10, 7:35 PM CDTSpecial Weather StatementBROJim Hogg25 min
Sep 10, 8:40 PM CDTSpecial Weather StatementBROJim Hogg50 min
Sep 10, 9:45 PM CDTSpecial Weather StatementBROStarr45 min
Sep 10, 9:56 PM CDTAreal Flood AdvisoryBROStarr, Zapata94 min
Sep 11, 11:47 AM CDTFlash Flood WatchBROCameron, Hidalgo, Starr, Willacy14 hr
Sep 11, 3:57 PM CDTSpecial Weather StatementBROBrooks93 min
Sep 11, 4:13 PM CDTSpecial Marine WarningBRO2 hr
Sep 11, 4:33 PM CDTAreal Flood AdvisoryBROKenedy117 min
Sep 11, 4:47 PM CDTSpecial Weather StatementBROHidalgo43 min
Sep 11, 5:03 PM CDTSpecial Weather StatementBROKenedy57 min
Sep 11, 5:12 PM CDTSpecial Weather StatementBROWillacy48 min
Sep 11, 5:18 PM CDTAreal Flood AdvisoryBROCameron, Hidalgo87 min
Sep 11, 5:23 PM CDTSevere Thunderstorm WarningBROWillacy52 min
Sep 11, 5:29 PM CDTAreal Flood AdvisoryBROWillacy2 hr
Sep 11, 5:46 PM CDTSpecial Weather StatementBROHidalgo59 min
Sep 11, 5:54 PM CDTSpecial Marine WarningBRO2 hr
Sep 11, 5:59 PM CDTAreal Flood AdvisoryBROKenedy, Willacy2 hr
Sep 11, 6:15 PM CDTSpecial Weather StatementBROHidalgo60 min
Sep 11, 6:25 PM CDTSpecial Weather StatementBROHidalgo, Willacy50 min
Sep 11, 6:33 PM CDTSpecial Weather StatementBROHidalgo57 min
Sep 11, 6:48 PM CDTSpecial Marine WarningBRO117 min
Sep 11, 6:53 PM CDTAreal Flood AdvisoryBROCameron, Hidalgo, Willacy112 min

Nearby

Tornado Warnings in Texas, 2015Every tornado warning in 2015Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.