Alert archive / Texas / Tornado Warnings in 2018

Tornado Warning 1, NWS Brownsville, TX

May 4, 2018Brooks County, Texas

NWS Brownsville, TX issued this tornado warning at May 4, 2018, 6:14 PM CDT for Brooks County, Texas. It was in force for 31 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: May 4, 2018, 6:14 PM CDT (23:14 UTC)
Expired: May 4, 2018, 6:45 PM CDT
In force: 31 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Brooks County, TX

The radar

The Corpus Christi radar (KCRP), 113 km from the middle of the area, began a volume at 23:13 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, 11.2 hours before the alert went out and 124 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: 1166 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 538 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.4

Open this sounding in Storm Lab

The text

As transmitted.

683 
WFUS54 KBRO 042314
TORBRO
TXC047-042345-
/O.NEW.KBRO.TO.W.0001.180504T2314Z-180504T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Brownsville TX
614 PM CDT FRI MAY 4 2018

The National Weather Service in Brownsville has issued a

* Tornado Warning for...
  Northwestern Brooks County in Deep South Texas...

* Until 645 PM CDT.
    
* At 613 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles south of Ramirez, or 14 miles west of
  Falfurrias, and is moving slowly soutwestward.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  northwestern Brooks County and just south of Highway 285.

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 outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 2726 9836 2721 9830 2710 9847 2714 9847
      2714 9849 2724 9849 2724 9851 2725 9851
      2725 9853 2727 9853
TIME...MOT...LOC 2313Z 046DEG 4KT 2722 9839 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

CB

2 follow-up statements

001 
WWUS54 KBRO 042329
SVSBRO

Severe Weather Statement
National Weather Service Brownsville TX
629 PM CDT FRI MAY 4 2018

TXC047-042345-
/O.CON.KBRO.TO.W.0001.000000T0000Z-180504T2345Z/
Brooks TX-
629 PM CDT FRI MAY 4 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHWESTERN BROOKS COUNTY...
    
At 628 PM CDT, a severe thunderstorm capable of producing a tornado
was located 9 miles south of Ramirez, or 15 miles west of Falfurrias,
and is moving slowly southwestward just south of Highway 285.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northwestern Brooks County just south of Highway 285.

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 outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 2726 9836 2721 9830 2710 9847 2714 9847
      2714 9849 2724 9849 2724 9851 2725 9851
      2725 9853 2727 9853
TIME...MOT...LOC 2328Z 046DEG 4KT 2721 9840 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

CB

789 
WWUS54 KBRO 042346
SVSBRO

Severe Weather Statement
National Weather Service Brownsville TX
646 PM CDT FRI MAY 4 2018

TXC047-042355-
/O.EXP.KBRO.TO.W.0001.000000T0000Z-180504T2345Z/
Brooks TX-
646 PM CDT FRI MAY 4 2018

...THE TORNADO WARNING FOR NORTHWESTERN BROOKS COUNTY HAS EXPIRED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning has been allowed to expire. However gusty 
winds and torrential rainfall are still possible with this 
thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Brownsville.

LAT...LON 2726 9836 2721 9830 2710 9847 2714 9847
      2714 9849 2724 9849 2724 9851 2725 9851
      2725 9853 2727 9853
TIME...MOT...LOC 2345Z 046DEG 4KT 2720 9841 

$$

CB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 4:51 PM CDT	Special Weather Statement	BRO	Starr	39 min
May 4, 5:32 PM CDT	Special Weather Statement	BRO	Jim Hogg	43 min
May 4, 5:59 PM CDT	Special Weather Statement	BRO	Jim Hogg	46 min
May 4, 6:49 PM CDT	Special Weather Statement	BRO	Brooks	56 min

Nearby

Tornado Warnings in Texas, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.