Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 16, NWS Brownsville, TX

May 15, 2021Cameron County, Hidalgo County, Willacy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 15, 2021, 1:26 PM CDT for Cameron County, Hidalgo County, Willacy County, Texas. It was in force for 28 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 15, 2021, 1:26 PM CDT (18:26 UTC)
Expired
May 15, 2021, 1:54 PM CDT
In force
28 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cameron County, TX, Hidalgo County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 53 km from the middle of the area, began a volume at 18:26 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, 6.4 hours before the alert went out and 55 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 2021-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1407 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 2021-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 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
1407 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted.

261 
WUUS54 KBRO 151826
SVRBRO
TXC061-215-489-151915-
/O.NEW.KBRO.SV.W.0016.210515T1826Z-210515T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Brownsville TX
126 PM CDT Sat May 15 2021

The National Weather Service in Brownsville has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hidalgo County in Deep South Texas...
  Northwestern Cameron County in Deep South Texas...
  Willacy County in Deep South Texas...

* Until 215 PM CDT.

* At 126 PM CDT, severe thunderstorms were located along a line
  extending from Monte Alto to La Villa to Olivarez to A.p. Solis
  Middle School, moving east at 45 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Harlingen, Weslaco, Donna, Mercedes, Raymondville, La Feria,
  Progreso, Edcouch, Santa Rosa and Lyford.

This includes the following highways...
 Interstate Highway 69 E between mile markers 21 and 51.
 US Highway 77 near mile marker 762.
 US Highway 281 between mile markers 792 and 820.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 2607 9786 2605 9796 2608 9820 2630 9799
      2644 9812 2660 9766 2658 9744 2654 9742
      2648 9745 2648 9743 2645 9746 2647 9740
      2642 9745 2640 9742 2639 9741 2640 9740
      2641 9738 2603 9775
TIME...MOT...LOC 1826Z 249DEG 40KT 2637 9797 2633 9792 2623 9801 2616
9808

HAIL...0.75IN
WIND...60MPH
 
$$

Farris
1 follow-up statement
800 
WWUS54 KBRO 151854
SVSBRO

Severe Weather Statement
National Weather Service Brownsville TX
154 PM CDT Sat May 15 2021

TXC061-215-489-151904-
/O.CAN.KBRO.SV.W.0016.000000T0000Z-210515T1915Z/
Hidalgo TX-Cameron TX-Willacy TX-
154 PM CDT Sat May 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HIDALGO...
NORTHWESTERN CAMERON AND WILLACY COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and 
heavy rain are still possible with these thunderstorms.

LAT...LON 2607 9786 2605 9796 2608 9820 2630 9799
      2644 9812 2660 9766 2658 9744 2654 9742
      2648 9745 2648 9743 2645 9746 2647 9740
      2642 9745 2640 9742 2639 9741 2640 9740
      2641 9738 2603 9775
TIME...MOT...LOC 1850Z 249DEG 40KT 2647 9768 2643 9763 2633 9772 2626
9780

$$

Farris

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 10:56 AM CDTSpecial Weather StatementBROHidalgo49 min
May 15, 11:25 AM CDTSpecial Weather StatementBROHidalgo50 min
May 15, 11:39 AM CDTAreal Flood AdvisoryBROHidalgo51 min
May 15, 12:14 PM CDTSpecial Weather StatementBROHidalgo, Starr46 min
May 15, 12:22 PM CDTTornado WarningBROHidalgo8 min
May 15, 12:23 PM CDTAreal Flood AdvisoryBROHidalgo112 min
May 15, 12:28 PM CDTTornado WarningBROHidalgo17 min
May 15, 12:41 PM CDTSevere Thunderstorm WarningBROCameron, Hidalgo49 min
May 15, 12:48 PM CDTAreal Flood AdvisoryBROHidalgo, Starr75 min
May 15, 1:02 PM CDTSevere Thunderstorm WarningBROCameron, Hidalgo, Willacy28 min
May 15, 1:12 PM CDTFlash Flood WarningBROHidalgo49 min
May 15, 1:30 PM CDTTornado WarningBROHidalgo, Willacy15 min
May 15, 1:53 PM CDTAreal Flood AdvisoryBROCameron, Hidalgo, Willacy52 min
May 15, 2:01 PM CDTSpecial Weather StatementBROCameron, Willacy29 min
May 15, 2:23 PM CDTSpecial Marine WarningBRO97 min
May 15, 2:29 PM CDTSpecial Weather StatementBROCameron46 min
May 15, 2:37 PM CDTAreal Flood AdvisoryBROCameron, Hidalgo, Willacy53 min
May 15, 3:15 PM CDTSpecial Weather StatementBROCameron30 min
May 15, 3:22 PM CDTSpecial Weather StatementBROCameron38 min
May 15, 3:25 PM CDTAreal Flood AdvisoryBROCameron, Willacy65 min
May 15, 5:20 PM CDTSpecial Marine WarningBRO25 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning 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.