Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 12, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at May 12, 2021, 2:40 AM CDT for Cameron 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
- May 12, 2021, 2:40 AM CDT (07:40 UTC)
- Expired
- May 12, 2021, 3:14 AM CDT
- In force
- 34 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), 33 km from the middle of the area, began a volume at 07:41 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 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, 7.7 hours before the alert went out and 36 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.
302 WUUS54 KBRO 120740 SVRBRO TXC061-120830- /O.NEW.KBRO.SV.W.0012.210512T0740Z-210512T0830Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Brownsville TX 240 AM CDT Wed May 12 2021 The National Weather Service in Brownsville has issued a * Severe Thunderstorm Warning for... Central Cameron County in Deep South Texas... * Until 330 AM CDT. * At 240 AM CDT, a severe thunderstorm was located over Rio Hondo, moving south at 20 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... San Benito, Los Fresnos, Rio Hondo, Laureles, Brownsville, Miller Jordan Middle School, Palmer Laasko Elementary, San Benito Library, Rancho Viejo City Hall and Lozano. This includes Interstate Highway 69 E between mile markers 12 and 19. 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 2627 9765 2630 9749 2604 9741 2604 9763 TIME...MOT...LOC 0740Z 350DEG 18KT 2621 9758 HAIL...<.75IN WIND...60MPH $$ TOMASELLI
1 follow-up statement
835
WWUS54 KBRO 120814
SVSBRO
Severe Weather Statement
National Weather Service Brownsville TX
314 AM CDT Wed May 12 2021
TXC061-120824-
/O.CAN.KBRO.SV.W.0012.000000T0000Z-210512T0830Z/
Cameron TX-
314 AM CDT Wed May 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAMERON COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled. However gusty winds and heavy rain are still
possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
Deep South Texas.
LAT...LON 2627 9765 2630 9749 2604 9741 2604 9763
TIME...MOT...LOC 0812Z 350DEG 18KT 2604 9755
$$
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, 1:40 AM CDT | Severe Thunderstorm Warning | BRO | Cameron | 49 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, 2:51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.