Alert archive / Texas / Tornado Warnings in 2015

Tornado Warning 6, NWS Brownsville, TX

August 31, 2015Cameron County, Texas

NWS Brownsville, TX issued this tornado warning at Aug 31, 2015, 4:08 PM CDT for Cameron County, Texas. It was in force for 25 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 31, 2015, 4:08 PM CDT (21:08 UTC)
Expired
Aug 31, 2015, 4:33 PM CDT
In force
25 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 5 km from the middle of the area, began a volume at 21:11 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 9.1 hours before the alert went out and 4 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 2015-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2712 joules per kilogram.LCLEL10008507005003002001001 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 2015-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 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
2712 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
738 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

Open this sounding in Storm Lab

The text

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

932 
WFUS54 KBRO 312108
TORBRO
TXC061-312145-
/O.NEW.KBRO.TO.W.0006.150831T2108Z-150831T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
408 PM CDT MON AUG 31 2015

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE  HAS ISSUED A

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

* UNTIL 445 PM CDT
    
* AT 407 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED OVER VETERANS INTERNATIONAL BRIDGE MOVING EAST
  AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SOUTHMOST...LINCOLN PARK...
  BROWNSVILLE PUBLIC LIBRARY SOUTHMOST BRANCH...
  VETERANS INTERNATIONAL BRIDGE...FORT BROWN MEMORIAL GOLF COURSE...
  LOPEZ HIGH SCHOOL...VILLA PANCHO AND BESTEIRO MIDDLE SCHOOL.

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 2584 9740 2586 9741 2584 9741 2584 9743
      2585 9745 2587 9744 2587 9746 2588 9746
      2588 9750 2590 9750 2589 9752 2590 9752
      2591 9737 2589 9736 2588 9737 2588 9736
      2587 9736 2586 9737 2584 9737
TIME...MOT...LOC 2107Z 259DEG 5KT 2585 9747 

$$

SPEECE
1 follow-up statement
253 
WWUS54 KBRO 312133
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
433 PM CDT MON AUG 31 2015

TXC061-312142-
/O.CAN.KBRO.TO.W.0006.000000T0000Z-150831T2145Z/
CAMERON TX-
433 PM CDT MON AUG 31 2015

...THE TORNADO WARNING FOR SOUTH CENTRAL CAMERON COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE TORNADO WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER APPEARS TO BE CAPABLE OF PRODUCING A
TORNADO. THEREFORE THE WARNING HAS BEEN CANCELLED. 

HOWEVER...WIND GUSTS UP TO 40 MPH AND PERIODS OF HEAVY RAIN ARE
STILL POSSIBLE WITH THIS THUNDERSTORM OVER SOUTH CENTRAL CAMERON
COUNTY.

LAT...LON 2584 9740 2586 9741 2584 9741 2584 9743
      2585 9745 2587 9744 2587 9746 2588 9746
      2588 9750 2590 9750 2589 9752 2590 9752
      2591 9737 2589 9736 2588 9737 2588 9736
      2587 9736 2586 9737 2584 9737
TIME...MOT...LOC 2131Z 259DEG 5KT 2586 9743 

$$

SPEECE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 7:53 AM CDTSpecial Weather StatementBROCameron37 min
Aug 31, 12:43 PM CDTSpecial Weather StatementBROCameron47 min
Aug 31, 1:38 PM CDTSpecial Weather StatementBROCameron, Willacy52 min
Aug 31, 2:05 PM CDTSpecial Weather StatementBROWillacy40 min
Aug 31, 2:18 PM CDTAreal Flood WarningBROCameron87 min
Aug 31, 3:03 PM CDTFlash Flood WarningBROCameron87 min
Aug 31, 3:26 PM CDTSevere Thunderstorm WarningBROKenedy47 min
Aug 31, 3:32 PM CDTSpecial Weather StatementBROBrooks58 min
Aug 31, 3:54 PM CDTAreal Flood AdvisoryBROBrooks96 min
Aug 31, 4:17 PM CDTFlash Flood WarningBROCameron88 min
Aug 31, 4:39 PM CDTSpecial Weather StatementBROJim Hogg, Zapata51 min
Aug 31, 5:09 PM CDTAreal Flood AdvisoryBROJim Hogg, Starr, Zapata96 min
Aug 31, 5:16 PM CDTSevere Thunderstorm WarningBROJim Hogg, Starr, Zapata35 min
Aug 31, 5:24 PM CDTAreal Flood AdvisoryBROJim Hogg, Starr, Zapata111 min
Aug 31, 5:41 PM CDTFlash Flood WarningBROJim Hogg, Starr79 min
Aug 31, 5:47 PM CDTSpecial Weather StatementBROCameron43 min
Aug 31, 5:53 PM CDTAreal Flood WarningBROCameron112 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.