Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Brownsville, TX

August 8, 2017Jim Hogg County, Texas

NWS Brownsville, TX issued this special weather statement at Aug 8, 2017, 7:21 PM CDT for Jim Hogg County, Texas. It was in force for 39 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 8, 2017, 7:21 PM CDT (00:21 UTC)
Expired
Aug 8, 2017, 8:00 PM CDT
In force
39 min
Issued by
NWS Brownsville, TX

County Jim Hogg County, TX

The radar

The Corpus Christi radar (KCRP), 118 km from the middle of the area, began a volume at 00:21 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 00:00Z, 0.4 hours before the alert went out and 131 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, Corpus Christi, TX at 00:00Z on 2017-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1003 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, Corpus Christi, TX at 00:00Z on 2017-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
1003 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1228 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

099 
WWUS84 KBRO 090021
SPSBRO

Special Weather Statement
National Weather Service Brownsville TX
721 PM CDT TUE AUG 8 2017
 
TXZ249-090100-
Jim Hogg TX-
721 PM CDT TUE AUG 8 2017

...SPECIAL WEATHER STATEMENT...

At 720 PM CDT, Doppler radar was tracking a strong thunderstorm over 
Hebbronville. This storm was nearly stationary.

Winds of up to 30 mph will be possible with this storm in addition 
to torrential rainfall.

Locations impacted include...
Hebbronville, Las Lomitas, Gruy Stadium, Jim Hogg County Airport,
Hebbronville High School, South Fork Estates and Hebbronville Border
Patrol Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2734 9855 2734 9852 2727 9852 2726 9853
      2725 9853 2725 9851 2724 9850 2724 9849
      2715 9849 2714 9848 2716 9881 2736 9874
      2736 9863 2734 9862 2734 9859 2736 9859
      2736 9855
TIME...MOT...LOC 0020Z 017DEG 2KT 2729 9865 

$$

Birchfield

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 7:41 PM CDTSpecial Weather StatementBROJim Hogg49 min
Aug 8, 7:55 PM CDTAreal Flood AdvisoryBROJim Hogg65 min
Aug 8, 8:05 PM CDTSpecial Weather StatementBROJim Hogg40 min
Aug 8, 8:14 PM CDTSpecial Weather StatementBROStarr46 min
Aug 8, 8:27 PM CDTSpecial Weather StatementBROJim Hogg48 min
Aug 8, 8:39 PM CDTAreal Flood AdvisoryBROJim Hogg, Starr81 min
Aug 8, 9:17 PM CDTSpecial Weather StatementBROJim Hogg43 min
Aug 9, 5:56 PM CDTSpecial Weather StatementBROCameron49 min

Nearby

Special Weather Statements in Texas, 2017Every special weather statement in 2017

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.