Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 33, NWS Brownsville, TX

July 20, 2021Hidalgo County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Jul 20, 2021, 7:26 PM CDT for Hidalgo County, Texas. It was in force for 34 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: Jul 20, 2021, 7:26 PM CDT (00:26 UTC)
Expired: Jul 20, 2021, 8:00 PM CDT
In force: 34 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 95 km from the middle of the area, began a volume at 00:27 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 00:00Z, 0.4 hours before the alert went out and 97 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: 1409 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1156 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: -21 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.4

Open this sounding in Storm Lab

The text

As transmitted.

391 
WUUS54 KBRO 210026
SVRBRO
TXC215-210100-
/O.NEW.KBRO.SV.W.0033.210721T0026Z-210721T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Brownsville TX
726 PM CDT Tue Jul 20 2021

The National Weather Service in Brownsville has issued a

* Severe Thunderstorm Warning for...
  Southwestern Hidalgo County in Deep South Texas...

* Until 800 PM CDT.

* At 725 PM CDT, a severe thunderstorm was located over Palmview High
  School, or over Palmhurst, moving south at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Edinburg, Mission, Pharr, San Juan, Hidalgo, Palmview, Penitas,
  Sullivan City, La Joya and Palmhurst.

This includes the following highways...
 US Highway 83 between mile markers 842 and 850.
 Interstate Highway 69 C between mile markers 1 and 5.
 US Highway 281 between mile markers 784 and 796.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2607 9818 2607 9825 2610 9829 2612 9827
      2612 9828 2610 9830 2613 9833 2617 9834
      2616 9839 2620 9844 2622 9844 2622 9848
      2620 9848 2625 9856 2622 9856 2626 9859
      2644 9820 2606 9809 2607 9813 2605 9815
TIME...MOT...LOC 0025Z 340DEG 22KT 2626 9835 

HAIL...<.75IN
WIND...60MPH
 
$$

BA

1 follow-up statement

877 
WWUS54 KBRO 210056
SVSBRO

Severe Weather Statement
National Weather Service Brownsville TX
756 PM CDT Tue Jul 20 2021

TXC215-210106-
/O.EXP.KBRO.SV.W.0033.000000T0000Z-210721T0100Z/
Hidalgo TX-
756 PM CDT Tue Jul 20 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HIDALGO COUNTY
WILL EXPIRE AT 800 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 2607 9818 2607 9825 2610 9829 2612 9827
      2612 9828 2610 9830 2613 9833 2617 9834
      2616 9839 2620 9844 2622 9844 2622 9848
      2620 9848 2625 9856 2622 9856 2626 9859
      2644 9820 2606 9809 2607 9813 2605 9815
TIME...MOT...LOC 0056Z 340DEG 22KT 2611 9829 

$$

BA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:56 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	34 min
Jul 20, 8:03 PM CDT	Areal Flood Advisory	BRO	Hidalgo	57 min
Jul 21, 12:02 PM CDT	Special Weather Statement	BRO	Cameron	43 min
Jul 21, 12:28 PM CDT	Special Weather Statement	BRO	Cameron	47 min
Jul 21, 1:15 PM CDT	Special Weather Statement	BRO	Starr	45 min
Jul 21, 1:16 PM CDT	Areal Flood Advisory	BRO	Cameron	119 min
Jul 21, 1:31 PM CDT	Special Weather Statement	BRO	Starr	44 min
Jul 21, 1:48 PM CDT	Special Weather Statement	BRO	Starr	42 min
Jul 21, 2:00 PM CDT	Special Weather Statement	BRO	Hidalgo	45 min
Jul 21, 2:05 PM CDT	Areal Flood Advisory	BRO	Hidalgo	115 min
Jul 21, 2:25 PM CDT	Special Weather Statement	BRO	Starr	35 min
Jul 21, 2:37 PM CDT	Areal Flood Advisory	BRO	Cameron	7 min
Jul 21, 2:44 PM CDT	Flash Flood Warning	BRO	Cameron	63 min
Jul 21, 2:44 PM CDT	Special Weather Statement	BRO	Hidalgo	31 min
Jul 21, 2:56 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo	5 hr
Jul 21, 2:59 PM CDT	Special Weather Statement	BRO	Starr	31 min
Jul 21, 3:22 PM CDT	Special Weather Statement	BRO	Kenedy	23 min
Jul 21, 3:39 PM CDT	Areal Flood Advisory	BRO	Hidalgo	111 min
Jul 21, 3:53 PM CDT	Areal Flood Advisory	BRO	Hidalgo	52 min
Jul 21, 4:15 PM CDT	Flash Flood Warning Considerable damage threat	BRO	Hidalgo	105 min
Jul 21, 4:27 PM CDT	Areal Flood Advisory	BRO	Brooks	63 min
Jul 21, 4:40 PM CDT	Areal Flood Advisory	BRO	Cameron	110 min
Jul 21, 4:56 PM CDT	Special Weather Statement	BRO	Cameron	49 min
Jul 21, 5:31 PM CDT	Areal Flood Advisory	BRO	Cameron	89 min
Jul 21, 5:40 PM CDT	Special Weather Statement	BRO	Cameron	50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every 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.