Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Brownsville, TX

August 5, 2021Starr County, Texas

NWS Brownsville, TX issued this special weather statement at Aug 5, 2021, 5:46 PM CDT for Starr County, Texas. It was in force for 29 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 5, 2021, 5:46 PM CDT (22:46 UTC)
Expired
Aug 5, 2021, 6:15 PM CDT
In force
29 min
Issued by
NWS Brownsville, TX
Hail
0.88 in
Wind
40

County Starr County, TX

The radar

The Brownsville radar (KBRO), 143 km from the middle of the area, began a volume at 22:45 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, 10.8 hours before the alert went out and 146 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 2021-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2122 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 2021-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -58 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
2122 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
840 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-58 m²/s²
0-3 km storm-relative helicity
-32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

397 
WWUS84 KBRO 052246
SPSBRO

Special Weather Statement
National Weather Service Brownsville TX
546 PM CDT Thu Aug 5 2021
 
TXZ252-353-052315-
Northern Hidalgo TX-Starr TX-
546 PM CDT Thu Aug 5 2021

...A strong thunderstorm will impact portions of southern Jim Hogg,
northwestern Hidalgo and northeastern Starr Counties through 615 PM
CDT...

At 546 PM CDT, Doppler radar was tracking a strong thunderstorm near 
San Isidro, or 13 miles northwest of Mccook, moving northwest at 20 
mph.

HAZARD...Winds in excess of 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Puerto Rico, La Gloria, La Reforma, Santa Catarina, San Isidro, Santa
Elena, Delmita and Diamond O Ranch Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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 2678 9863 2678 9842 2664 9831 2650 9847
      2670 9875 2679 9864
TIME...MOT...LOC 2246Z 131DEG 23KT 2666 9847 

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

$$

Mejia

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 3:09 PM CDTSpecial Weather StatementBROKenedy36 min
Aug 5, 3:43 PM CDTSpecial Weather StatementBROWillacy32 min
Aug 5, 5:00 PM CDTSpecial Weather StatementBROWillacy30 min
Aug 5, 5:02 PM CDTSpecial Weather StatementBROBrooks28 min
Aug 5, 5:06 PM CDTSpecial Weather StatementBROJim Hogg24 min
Aug 5, 5:22 PM CDTAreal Flood AdvisoryBROJim Hogg, Zapata68 min
Aug 5, 5:26 PM CDTSpecial Weather StatementBROHidalgo34 min

Nearby

Special Weather Statements in Texas, 2021Every special weather statement in 2021

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.