Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 15, NWS Brownsville, TX

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

NWS Brownsville, TX issued this severe thunderstorm warning at May 15, 2021, 1:02 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, 1:02 PM CDT (18:02 UTC)
Expired: May 15, 2021, 1:30 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), 73 km from the middle of the area, began a volume at 18:02 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, 6.0 hours before the alert went out and 75 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: 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.

122 
WUUS54 KBRO 151802
SVRBRO
TXC061-215-489-151830-
/O.NEW.KBRO.SV.W.0015.210515T1802Z-210515T1830Z/

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

The National Weather Service in Brownsville has issued a

* Severe Thunderstorm Warning for...
  Central Hidalgo County in Deep South Texas...
  Western Cameron County in Deep South Texas...
  Southwestern Willacy County in Deep South Texas...

* Until 130 PM CDT.

* At 102 PM CDT, a severe thunderstorm was located over Edinburg
  Regional Medical Center, or over Edinburg, 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...
  Edinburg, Harlingen, Raymondville, Elsa, Edcouch, Santa Rosa,
  Lyford, Palmhurst, La Villa and North McAllen.

This includes the following highways...
 Interstate Highway 69 E between mile markers 42 and 45.
 Interstate Highway 69 C between mile markers 3 and 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2625 9813 2625 9827 2627 9849 2650 9778
      2627 9779 2622 9780 2624 9781
TIME...MOT...LOC 1802Z 254DEG 39KT 2626 9817 

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

Farris

1 follow-up statement

779 
WWUS54 KBRO 151811
SVSBRO

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

TXC061-215-489-151830-
/O.CON.KBRO.SV.W.0015.000000T0000Z-210515T1830Z/
Hidalgo TX-Cameron TX-Willacy TX-
111 PM CDT Sat May 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR CENTRAL HIDALGO...WESTERN CAMERON AND SOUTHWESTERN WILLACY
COUNTIES...

At 111 PM CDT, a severe thunderstorm was located over San Carlos
Elementary School, or near Elsa, 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...
Edinburg, Harlingen, Raymondville, Elsa, Edcouch, Santa Rosa, Lyford,
Palmhurst, La Villa and North McAllen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 2625 9813 2625 9827 2627 9849 2650 9778
      2627 9779 2622 9780 2624 9781
TIME...MOT...LOC 1811Z 254DEG 39KT 2629 9806 

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

Farris

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 10:56 AM CDT	Special Weather Statement	BRO	Hidalgo	49 min
May 15, 11:25 AM CDT	Special Weather Statement	BRO	Hidalgo	50 min
May 15, 11:39 AM CDT	Areal Flood Advisory	BRO	Hidalgo	51 min
May 15, 12:14 PM CDT	Special Weather Statement	BRO	Hidalgo, Starr	46 min
May 15, 12:22 PM CDT	Tornado Warning	BRO	Hidalgo	8 min
May 15, 12:23 PM CDT	Areal Flood Advisory	BRO	Hidalgo	112 min
May 15, 12:28 PM CDT	Tornado Warning	BRO	Hidalgo	17 min
May 15, 12:41 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo	49 min
May 15, 12:48 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Starr	75 min
May 15, 1:12 PM CDT	Flash Flood Warning	BRO	Hidalgo	49 min
May 15, 1:26 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Willacy	28 min
May 15, 1:30 PM CDT	Tornado Warning	BRO	Hidalgo, Willacy	15 min
May 15, 1:53 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	52 min
May 15, 2:01 PM CDT	Special Weather Statement	BRO	Cameron, Willacy	29 min
May 15, 2:23 PM CDT	Special Marine Warning	BRO		97 min
May 15, 2:29 PM CDT	Special Weather Statement	BRO	Cameron	46 min
May 15, 2:37 PM CDT	Areal Flood Advisory	BRO	Cameron, Hidalgo, Willacy	53 min
May 15, 3:15 PM CDT	Special Weather Statement	BRO	Cameron	30 min
May 15, 3:22 PM CDT	Special Weather Statement	BRO	Cameron	38 min
May 15, 3:25 PM CDT	Areal Flood Advisory	BRO	Cameron, Willacy	65 min
May 15, 5:20 PM CDT	Special Marine Warning	BRO		25 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.