Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 31, NWS Brownsville, TX

July 9, 2021Cameron County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Jul 9, 2021, 5:22 AM CDT for Cameron County, Texas. It was in force for 38 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 9, 2021, 5:22 AM CDT (10:22 UTC)
Expired: Jul 9, 2021, 6:00 AM CDT
In force: 38 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 25 km from the middle of the area, began a volume at 10:24 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, 10.4 hours before the alert went out and 26 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: 1544 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

218 
WUUS54 KBRO 091022
SVRBRO
TXC061-091100-
/O.NEW.KBRO.SV.W.0031.210709T1022Z-210709T1100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Brownsville TX
522 AM CDT Fri Jul 9 2021

The National Weather Service in Brownsville has issued a

* Severe Thunderstorm Warning for...
  Central Cameron County in Deep South Texas...

* Until 600 AM CDT.

* At 521 AM CDT, a severe thunderstorm was located near Veterans
  International Bridge, or near Downtown Brownsville, moving north at
  45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Brownsville, Los Fresnos, Rancho Viejo, Rio Hondo, Southmost, 
  Olmito, Port Of Brownsville, Cameron Park, and Laureles.

This includes the following highways...
 Interstate Highway 69 E between mile markers 1 and 18.
 US Highway 281 between mile markers 828 and 838.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 2589 9752 2600 9764 2631 9758 2627 9719
      2626 9730 2625 9731 2625 9729 2622 9734
      2624 9719 2623 9722 2620 9730 2613 9729
      2614 9724 2611 9730 2608 9723 2595 9727
      2584 9737
TIME...MOT...LOC 1021Z 192DEG 41KT 2583 9750 

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

BA

1 follow-up statement

831 
WWUS54 KBRO 091056
SVSBRO

Severe Weather Statement
National Weather Service Brownsville TX
556 AM CDT Fri Jul 9 2021

TXC061-091106-
/O.EXP.KBRO.SV.W.0031.000000T0000Z-210709T1100Z/
Cameron TX-
556 AM CDT Fri Jul 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAMERON COUNTY WILL
EXPIRE AT 600 AM CDT...
    
The severe thunderstorm which prompted the warning has weakened 
below severe limits. Therefore, the warning will be allowed to 
expire. Torrential rainfall is still occurring with this storm!

LAT...LON 2589 9752 2600 9764 2631 9758 2627 9719
      2626 9730 2625 9731 2625 9729 2622 9734
      2624 9719 2623 9722 2620 9730 2613 9729
      2614 9724 2611 9730 2608 9723 2595 9727
      2584 9737
TIME...MOT...LOC 1056Z 192DEG 41KT 2621 9741 

$$

BA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 9:27 PM CDT	Areal Flood Advisory	BRO	Cameron	56 min
Jul 9, 1:47 AM CDT	Areal Flood Advisory	BRO	Cameron	118 min
Jul 9, 2:18 AM CDT	Rip Current Statement	BRO	Kenedy	17 hr
Jul 9, 3:41 AM CDT	Flash Flood Warning	BRO	Cameron	6 hr
Jul 9, 4:32 AM CDT	Special Weather Statement	BRO	Cameron	43 min
Jul 9, 5:03 AM CDT	Special Weather Statement	BRO	Cameron	42 min
Jul 9, 5:08 AM CDT	Areal Flood Advisory	BRO	Cameron	2 hr
Jul 9, 5:14 AM CDT	Special Marine Warning	BRO		46 min
Jul 9, 5:44 AM CDT	Flash Flood Warning	BRO	Cameron	4 hr
Jul 9, 5:51 AM CDT	Special Marine Warning	BRO		54 min
Jul 9, 6:05 AM CDT	Special Marine Warning	BRO		25 min
Jul 9, 6:24 AM CDT	Special Marine Warning	BRO		51 min
Jul 9, 6:47 AM CDT	Flash Flood Warning	BRO	Cameron	3 hr
Jul 9, 7:05 AM CDT	Special Marine Warning	BRO		55 min
Jul 9, 9:16 AM CDT	Small Craft Advisory	BRO		4 hr
Jul 9, 9:36 AM CDT	Areal Flood Advisory	BRO	Cameron	4 hr
Jul 9, 9:39 AM CDT	Areal Flood Advisory	BRO	Cameron	4 hr
Jul 9, 9:42 AM CDT	Areal Flood Advisory	BRO	Cameron	4 hr
Jul 9, 2:57 PM CDT	Special Weather Statement	BRO	Hidalgo	48 min
Jul 9, 3:36 PM CDT	Areal Flood Advisory	BRO	Cameron	26 min
Jul 9, 3:40 PM CDT	Areal Flood Advisory	BRO	Cameron	13 min
Jul 9, 3:44 PM CDT	Flash Flood Warning	BRO	Cameron	2 hr
Jul 9, 3:52 PM CDT	Flash Flood Warning	BRO	Cameron	42 min
Jul 9, 4:23 PM CDT	Flash Flood Warning	BRO	Cameron	2 hr
Jul 9, 4:59 PM CDT	Areal Flood Advisory	BRO	Willacy	51 min
Jul 9, 5:09 PM CDT	Special Weather Statement	BRO	Brooks	51 min
Jul 9, 5:10 PM CDT	Special Weather Statement	BRO	Kenedy	50 min
Jul 9, 5:45 PM CDT	Areal Flood Advisory	BRO	Cameron	51 min
Jul 9, 5:59 PM CDT	Special Weather Statement	BRO	Kleberg	16 min
Jul 9, 6:01 PM CDT	Special Weather Statement	BRO	Kenedy	14 min
Jul 9, 6:09 PM CDT	Areal Flood Advisory	BRO	Kenedy, Willacy	51 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.