Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 10, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at May 12, 2021, 1:40 AM CDT for Cameron County, Texas. It was in force for 49 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 12, 2021, 1:40 AM CDT (06:40 UTC)
- Expired
- May 12, 2021, 2:29 AM CDT
- In force
- 49 min
- Issued by
- NWS Brownsville, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 80.0 mph
County Cameron County, TX
The radar
The Brownsville radar (KBRO), 17 km from the middle of the area, began a volume at 06:43 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 12, 1:45 AM CDT | TSTM WND DMG | La Feria, TX | REPORT RECEIVED VIA SOCIAL MEDIA OF A PALM TREE UPROOTED IN LA FERIA. TIME ESTIMATED VIA RADAR. |
| May 12, 2:18 AM CDT | TSTM WND DMG | 1 Nnw Brownsville, TX | NWS EMPLOYEE REPORTED SEVERAL TREE LIMBS WITH 5 INCH DIAMETER SNAPPED OFF TREES IN HIS NEIGHBORHOOD. TIME ESTIMATED VIA RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 11, 8:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 00:00Z, 6.7 hours before the alert went out and 19 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.
- Mixed-layer CAPE
- 2611 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 772 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.3
The text
As transmitted.
401
WUUS54 KBRO 120640
SVRBRO
TXC061-120745-
/O.NEW.KBRO.SV.W.0010.210512T0640Z-210512T0745Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Brownsville TX
140 AM CDT Wed May 12 2021
The National Weather Service in Brownsville has issued a
* Severe Thunderstorm Warning for...
Cameron County in Deep South Texas...
* Until 245 AM CDT.
* At 140 AM CDT, a severe thunderstorm was located over Santa Maria
High School, or near Santa Maria, moving east at 30 mph.
This is a very dangerous storm.
HAZARD...80 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
* Locations impacted include...
Harlingen, San Benito, La Feria, Los Fresnos, Santa Rosa, Rancho
Viejo, Rio Hondo, Palm Valley, Los Indios and Olmito.
This includes the following highways...
Interstate Highway 69 E between mile markers 1 and 33.
US Highway 281 between mile markers 814 and 838.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2585 9745 2588 9746 2588 9750 2590 9750
2589 9752 2592 9753 2594 9758 2602 9767
2603 9766 2602 9774 2605 9777 2603 9779
2606 9780 2605 9786 2628 9786 2628 9737
2592 9736 2591 9737 2589 9736 2584 9737
TIME...MOT...LOC 0640Z 269DEG 24KT 2610 9781
HAIL...<.75IN
WIND...80MPH
$$
TOMASELLI2 follow-up statements
904
WWUS54 KBRO 120707 RRA
SVSBRO
Severe Weather Statement
National Weather Service Brownsville TX
207 AM CDT Wed May 12 2021
TXC061-120745-
/O.CON.KBRO.SV.W.0010.000000T0000Z-210512T0745Z/
Cameron TX-
207 AM CDT Wed May 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR CAMERON COUNTY...
At 207 AM CDT, a severe thunderstorm was located over Miller Jordan
Middle School, or over San Benito, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Harlingen, San Benito, La Feria, Los Fresnos, Santa Rosa, Rancho
Viejo, Rio Hondo, Palm Valley, Los Indios and Olmito.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2585 9745 2588 9746 2588 9750 2590 9750
2589 9752 2592 9753 2594 9758 2602 9767
2603 9766 2602 9774 2605 9777 2603 9779
2606 9780 2605 9786 2628 9786 2628 9737
2592 9736 2591 9737 2589 9736 2584 9737
TIME...MOT...LOC 0707Z 269DEG 24KT 2610 9761
HAIL...<.75IN
WIND...60MPH
$$
TOMASELLI557
WWUS54 KBRO 120729
SVSBRO
Severe Weather Statement
National Weather Service Brownsville TX
229 AM CDT Wed May 12 2021
TXC061-120739-
/O.CAN.KBRO.SV.W.0010.000000T0000Z-210512T0745Z/
Cameron TX-
229 AM CDT Wed May 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR CAMERON COUNTY IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
Deep South Texas.
LAT...LON 2585 9745 2588 9746 2588 9750 2590 9750
2589 9752 2592 9753 2594 9758 2602 9767
2603 9766 2602 9774 2605 9777 2603 9779
2606 9780 2605 9786 2628 9786 2628 9737
2592 9736 2591 9737 2589 9736 2584 9737
TIME...MOT...LOC 0728Z 269DEG 24KT 2610 9745
$$
TOMASELLIThe office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 8:51 PM CDT | Special Weather Statement | BRO | Zapata | 39 min |
| May 11, 9:11 PM CDT | Severe Thunderstorm Warning | BRO | Jim Hogg, Zapata | 49 min |
| May 11, 9:39 PM CDT | Special Weather Statement | BRO | Zapata | 51 min |
| May 11, 9:48 PM CDT | Severe Thunderstorm Warning | BRO | Zapata | 42 min |
| May 11, 9:54 PM CDT | Severe Thunderstorm Warning | BRO | Brooks, Jim Hogg | 51 min |
| May 11, 10:26 PM CDT | Severe Thunderstorm Warning | BRO | Starr, Zapata | 49 min |
| May 11, 10:45 PM CDT | Special Weather Statement | BRO | Brooks, Kenedy | 60 min |
| May 11, 11:04 PM CDT | Areal Flood Advisory | BRO | Zapata | 4 hr |
| May 11, 11:14 PM CDT | Severe Thunderstorm Warning | BRO | Starr, Zapata | 46 min |
| May 11, 11:21 PM CDT | Areal Flood Advisory | BRO | Jim Hogg, Starr, Zapata | 4 hr |
| May 11, 11:22 PM CDT | Areal Flood Advisory | BRO | Jim Hogg, Zapata | 94 min |
| May 11, 11:51 PM CDT | Special Weather Statement | BRO | Hidalgo, Kenedy, Starr | 54 min |
| May 11, 11:56 PM CDT | Severe Thunderstorm Warning | BRO | Starr | 36 min |
| May 12, 12:06 AM CDT | Areal Flood Advisory | BRO | Starr | 3 hr |
| May 12, 12:21 AM CDT | Areal Flood Advisory | BRO | Brooks, Hidalgo, Starr | 3 hr |
| May 12, 12:25 AM CDT | Areal Flood Advisory | BRO | Starr | 3 hr |
| May 12, 12:28 AM CDT | Special Weather Statement | BRO | Hidalgo | 62 min |
| May 12, 12:38 AM CDT | Special Weather Statement | BRO | Starr | 52 min |
| May 12, 12:44 AM CDT | Severe Thunderstorm Warning | BRO | Hidalgo, Willacy | 30 min |
| May 12, 12:50 AM CDT | Special Weather Statement | BRO | Kenedy | 55 min |
| May 12, 1:00 AM CDT | Severe Thunderstorm Warning | BRO | Kenedy | 60 min |
| May 12, 1:04 AM CDT | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo | 41 min |
| May 12, 1:12 AM CDT | Areal Flood Advisory | BRO | Hidalgo, Starr | 3 hr |
| May 12, 1:12 AM CDT | Special Marine Warning | BRO | 48 min | |
| May 12, 1:19 AM CDT | Areal Flood Advisory | BRO | Hidalgo, Willacy | 3 hr |
| May 12, 1:34 AM CDT | Special Marine Warning | BRO | 26 min | |
| May 12, 1:46 AM CDT | Areal Flood Advisory | BRO | Cameron, Hidalgo | 3 hr |
| May 12, 1:50 AM CDT | Severe Thunderstorm Warning | BRO | Hidalgo | 40 min |
| May 12, 1:53 AM CDT | Special Marine Warning | BRO | 22 min | |
| May 12, 2:24 AM CDT | Areal Flood Advisory | BRO | Cameron | 3 hr |
| May 12, 2:27 AM CDT | Special Weather Statement | BRO | Cameron | 63 min |
| May 12, 2:39 AM CDT | Special Marine Warning | BRO | 41 min | |
| May 12, 2:40 AM CDT | Severe Thunderstorm Warning | BRO | Cameron | 34 min |
| May 12, 2:51 AM CDT | Severe Thunderstorm Warning | BRO | Cameron | 39 min |
| May 12, 3:31 AM CDT | Special Weather Statement | BRO | Cameron | 59 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.