Alert archive / Texas / Tornado Warnings in 2012
Tornado Warning 11, NWS Brownsville, TX
NWS Brownsville, TX issued this tornado warning at Apr 20, 2012, 6:30 PM CDT for Cameron County, Texas. It was in force for 30 min. 8 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
- Apr 20, 2012, 6:30 PM CDT (23:30 UTC)
- Expired
- Apr 20, 2012, 7:00 PM CDT
- In force
- 30 min
- Issued by
- NWS Brownsville, TX
- Area
- Storm-based polygon
County Cameron County, TX
The radar
The Brownsville radar (KBRO), 32 km from the middle of the area, began a volume at 23:30 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 |
|---|---|---|---|
| Apr 20, 6:35 PM CDT | TORNADO | 6 Ssw Harlingen, TX | REPORT OF FUNNEL AND TOUCH DOWN SOUTHWEST OF HIGHWAY 77 IN HARLINGEN. RESIDENT AT INTERSECTION OF RANGERVILLE ROAD AND CR 800 REPORTED SPLIT TREE BLOWN ACROSS ROAD AND DEBRIS IN BACKYARD. |
| Apr 20, 6:36 PM CDT | HAIL 0.88 | Harlingen, TX | NICKEL SIZE HAIL REPORTED AT 2425 ED CAREY ROAD. |
| Apr 20, 6:38 PM CDT | FUNNEL CLOUD | 2 N San Benito, TX | FUNNEL CLOUD REPORTED ON NORTH SIDE OF SAN BENITO. |
| Apr 20, 6:44 PM CDT | HAIL 1 | Harlingen, TX | QUARTER SIZED HAIL REPORTED NEAR HARLINGEN HIGH SCHOOL. |
| Apr 20, 6:45 PM CDT | HAIL 1 | Harlingen, TX | QUARTER SIZE REPORTED NEAR THE TREASURE HILLS AREA OF HARLINGEN. |
| Apr 20, 6:48 PM CDT | FUNNEL CLOUD | Harlingen, TX | PUBLIC REPORTS FUNNEL CLOUD EAST OF HARLINGEN AIRPORT |
| Apr 20, 6:52 PM CDT | FUNNEL CLOUD | Harlingen, TX | PUBLIC REPORT OF FUNNEL CLOUD NEAR HARLINGEN AIRPORT |
| Apr 20, 7:10 PM CDT | HAIL 1 | 5 Ssw Rancho Viejo, TX | MOSTLY NICKEL SIZED BUT SEVERAL STONES OF QUARTER SIZED EMBEDDED. |
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 |
|---|---|---|---|
| Apr 20, 2:29 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 12:00Z, 11.5 hours before the alert went out and 34 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
- 1336 J/kg
- Mixed-layer CIN
- -192 J/kg
- Mixed-layer LCL
- 742 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
011 WFUS54 KBRO 202330 TORBRO TXC061-210000- /O.NEW.KBRO.TO.W.0011.120420T2330Z-120421T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 630 PM CDT FRI APR 20 2012 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A * TORNADO WARNING FOR... WESTERN CAMERON COUNTY IN DEEP SOUTH TEXAS. * UNTIL 700 PM CDT * AT 630 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A TORNADO ON RADAR OVER HARLINGEN...MOVING SOUTHEAST AT 40 MPH. * THE TORNADO WILL BE NEAR... SAN BENITO BY 630 PM CDT. LA PALOMA BY 635 PM CDT. RANCHO VIEJO BY 645 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432. && LAT...LON 2616 9778 2627 9771 2601 9744 2594 9757 TIME...MOT...LOC 2330Z 317DEG 34KT 2613 9767 $$ JGG
4 follow-up statements
320 WWUS54 KBRO 202335 SVSBRO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BROWNSVILLE TX 635 PM CDT FRI APR 20 2012 TXC061-210000- /O.CON.KBRO.TO.W.0011.000000T0000Z-120421T0000Z/ CAMERON- 635 PM CDT FRI APR 20 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR WESTERN CAMERON COUNTY... AT 635 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO TRACK A TORNADO ON RADAR 3 MILES WEST OF SAN BENITO...MOVING SOUTHEAST AT 40 MPH. THIS STORM HAS STRONG ROTATION AND MAY PRODUCE A SIGNIFICANT TORNADO. THE TORNADO WILL BE NEAR... EL CAMINO ANGOSTO BY 635 PM CDT. LAGO BY 640 PM CDT. RANCHO VIEJO BY 645 PM CDT. OLMITO BY 650 PM CDT. THE HIGHWAY 77 CORRRIDOR...AND FAR NORTHERN BROWNSVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM! ACT QUICKLY. GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING...AWAY FROM WINDOWS. COVER YOUR HEAD WITH PILLOWS OR BLANKETS. && LAT...LON 2616 9778 2627 9771 2601 9744 2594 9757 TIME...MOT...LOC 2335Z 317DEG 34KT 2611 9766 $$ JGG
906
WWUS54 KBRO 202345
SVSBRO
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
645 PM CDT FRI APR 20 2012
TXC061-210000-
/O.CON.KBRO.TO.W.0011.000000T0000Z-120421T0000Z/
CAMERON-
645 PM CDT FRI APR 20 2012
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL
CAMERON COUNTY...
AT 645 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
TRACK A TORNADO ON RADAR 4 MILES SOUTH OF SAN BENITO...MOVING
SOUTHEAST AT 35 MPH. SPOTTERS REPORTED A FUNNEL CLOUD NEAR SAN
BENITO AT 642 PM.
THE TORNADO WILL BE NEAR...
VILLA CAVAZOS BY 645 PM CDT.
SAN PEDRO BY 650 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM! ACT QUICKLY. GO TO A SMALL INTERIOR ROOM
ON THE LOWEST FLOOR OF A STURDY BUILDING...AWAY FROM WINDOWS. COVER
YOUR HEAD WITH PILLOWS OR BLANKETS.
&&
LAT...LON 2594 9757 2613 9775 2620 9765 2605 9748
2601 9744
TIME...MOT...LOC 2345Z 330DEG 30KT 2603 9762
$$
JGG376
WWUS54 KBRO 202352
SVSBRO
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
652 PM CDT FRI APR 20 2012
TXC061-210000-
/O.CON.KBRO.TO.W.0011.000000T0000Z-120421T0000Z/
CAMERON-
652 PM CDT FRI APR 20 2012
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR SOUTHERN
CAMERON COUNTY...
AT 651 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
TRACK A TORNADO ON RADAR 4 MILES WEST OF OLMITO...MOVING SOUTHEAST
AT 35 MPH. MULTIPLE FUNNEL CLOUD REPORTS CONTINUE AND RADAR
INDICATES STRONG ROTATION. SAN PEDRO AND NORTHWESTERN BROWNSVILLE
ARE IN THE PATH OF THIS STORM.
THE TORNADO WILL BE NEAR...
SAN PEDRO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM! ACT QUICKLY. GO TO A SMALL INTERIOR ROOM
ON THE LOWEST FLOOR OF A STURDY BUILDING...AWAY FROM WINDOWS. COVER
YOUR HEAD WITH PILLOWS OR BLANKETS.
&&
LAT...LON 2601 9744 2594 9757 2603 9765 2609 9753
2605 9748
TIME...MOT...LOC 2351Z 330DEG 30KT 2599 9759
$$
JGG295
WWUS54 KBRO 202358
SVSBRO
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
658 PM CDT FRI APR 20 2012
TXC061-210008-
/O.EXP.KBRO.TO.W.0011.000000T0000Z-120421T0000Z/
CAMERON-
658 PM CDT FRI APR 20 2012
...THE TORNADO WARNING FOR SOUTHERN CAMERON COUNTY WILL EXPIRE AT 700
PM CDT...
A NEW TORNADO WARNING HAS BEEN ISSUED.
LAT...LON 2601 9744 2594 9757 2603 9765 2609 9753
2605 9748
TIME...MOT...LOC 2358Z 330DEG 30KT 2594 9756
$$
JGGThe office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 3:54 AM CDT | Small Craft Advisory | BRO | 42 hr | |
| Apr 20, 3:54 AM CDT | Small Craft Advisory for Winds | BRO | 30 hr | |
| Apr 20, 3:09 PM CDT | Severe Thunderstorm Warning | BRO | Brooks, Jim Hogg | 51 min |
| Apr 20, 3:57 PM CDT | Severe Thunderstorm Warning | BRO | Brooks, Jim Hogg, Starr | 48 min |
| Apr 20, 4:12 PM CDT | Tornado Warning | BRO | Jim Hogg | 10 min |
| Apr 20, 4:14 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 46 min |
| Apr 20, 4:18 PM CDT | Severe Thunderstorm Warning | BRO | Brooks, Kenedy | 42 min |
| Apr 20, 4:36 PM CDT | Areal Flood Advisory | BRO | Brooks | 114 min |
| Apr 20, 4:37 PM CDT | Severe Thunderstorm Warning | BRO | Kenedy | 38 min |
| Apr 20, 4:38 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo | 52 min |
| Apr 20, 4:58 PM CDT | Severe Thunderstorm Warning | BRO | Kenedy | 47 min |
| Apr 20, 5:04 PM CDT | Special Marine Warning | BRO | 2 hr | |
| Apr 20, 5:08 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo | 52 min |
| Apr 20, 5:16 PM CDT | Severe Thunderstorm Warning | BRO | Kenedy, Willacy | 27 min |
| Apr 20, 5:17 PM CDT | Areal Flood Advisory | BRO | Hidalgo, Starr | 118 min |
| Apr 20, 5:20 PM CDT | Areal Flood Advisory | BRO | Kenedy | 115 min |
| Apr 20, 5:27 PM CDT | Tornado Warning | BRO | Willacy | 14 min |
| Apr 20, 5:30 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 45 min |
| Apr 20, 5:40 PM CDT | Severe Thunderstorm Warning | BRO | Willacy | 50 min |
| Apr 20, 5:53 PM CDT | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo | 52 min |
| Apr 20, 5:56 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo | 24 min |
| Apr 20, 6:11 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo, Willacy | 29 min |
| Apr 20, 6:18 PM CDT | Severe Thunderstorm Warning | BRO | Cameron | 42 min |
| Apr 20, 6:30 PM CDT | Areal Flood Advisory | BRO | Cameron, Willacy | 2 hr |
| Apr 20, 6:56 PM CDT | Severe Thunderstorm Warning | BRO | Cameron | 49 min |
| Apr 20, 6:57 PM CDT | Tornado Warning | BRO | Cameron | 12 min |
Nearby
Tornado Warnings in Texas, 2012Every tornado warning in 2012Tornadoes in 2012
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.