Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 9, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at Apr 24, 2001, 2:41 AM CDT for Cameron County, Willacy County, Texas. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 24, 2001, 2:41 AM CDT (07:41 UTC)
- Expired
- Apr 24, 2001, 3:45 AM CDT
- In force
- 64 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
Counties Cameron County, TX, Willacy County, TX
The radar
The Brownsville radar (KBRO), 46 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 nearest sounding before it
Brownsville Intl, TX (KBRO), launched 00:00Z, 7.7 hours before the alert went out and 48 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
- 2100 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
672 WUUS54 KBRO 240743 SVRBRO TXC061-489-240845- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 241 AM CDT TUE APR 24 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CAMERON COUNTY IN DEEP SOUTH TEXAS SOUTHEASTERN WILLACY COUNTY IN DEEP SOUTH TEXAS * UNTIL 345 AM CDT * AT 241 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 15 MILES NORTHEAST OF RIO HONDO TO LOS FRESNOS TO 8 MILES WEST OF BROWNSVILLE...MOVING EAST AT 10 MPH. THESE SEVERE THUNDERSTORM WILL LIKELY PRODUCE DIME SIZE HAIL...AND WINDS UP TO 60 MPH. * THE SEVERE THUNDERSTORMS WILL BE NEAR... CAMERON PARK BY 300 AM CDT. BROWNSVILLE BY 305 AM CDT. LAGUNA VISTA BY 325 AM CDT. LAGUNA HEIGHTS BY 335 AM CDT. PORT ISABEL BY 345 AM CDT. OTHER LOCATIONS IN THE PATH OF THESE STORMS INCLUDE...INDIAN LAKE AND BAYVIEW. IN ADDITION TO HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. $$ LAT...LON 2652 9765 2589 9784 2583 9702 2649 9701 SPEECE
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Brownsville, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 23, 9:35 PM CDT, 5 hours 6 minutes earlier.
Area forecast discussion, Apr 23, 9:35 PM CDT, 5 hours 6 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 935 PM CDT MON APR 23 2001 SHORT TERM...KBRO RADAR SHOWS A BKN LINE OF CONV FORMING UP ALONG AND TO THE SOUTH AND EAST OF THE COLD FRONT EXTENDING SOUTHWEST FROM LA ROUGHLY PARRALELING THE TX COASTLINE. THIS LINE HAS FORMED OVER JIM HOGG...NE STARR AND W HIDALGO COUNTIES WITH THE LINE MOVING LITTLE WITH CELLULAR MOVEMENT TO THE N-NW AT 5 TO 10 MPH. THE STRONGEST CELL IS NOW LOCATED OVER NW HIDALGO COUNTY. MSAS LIS SHOWS THE MOST UNSTABLE AIR (AROUND -8) ALONG THE COASTAL AREAS WITH MORE STABLE LIS (NEAR -4) OVER ZAPATA COUNTY. WITH THE LOSS OF THE AFTERNOON HEATING...AND THE LACK OF A GOOD UPPER LEVEL WIND ENVIRONMENT...IT APPEARS THAT THE MAIN THREAT HAS SHIFTED AWAY FROM SVR WX TOWARDS A POSSIBLE HVY RAIN EVENT DUE TO THE SLOW MOVEMENT OF THE CELLS. HOWEVER...THE WIDELY SCT TO SCT NATURE OF THE CELLS DO NOT APPEAR TO WARRENT A FLOOD/FLASH FLOOD WATCH ATTM. IN ADDITION FLASH FLOOD TREASHOLDS OVER THE CWA REMAIN FAIRLY HIGH DUE TO THE DRY SOIL CONDITIONS OVER THE FORECAST AREA. RUC AND MESO-ETA DATA SHOW GOOD 5H PVA PERSISTING OVER THE CWA WITH THE BEST PVA EVIDENT FROM 06-12Z TUES MORNING AS THE SURFACE FRONT PUSHES THROUGH THE REGION. THIS WILL MAINTAIN THE BEST CONV CHCS MAINLY AFTER MIDNIGHT. OVERALL...CURRENT FORECAST WORDING LOOKS GOOD WITH NO CHANGES REQUIRED ATTM. MARINE...BOY020 REPORTS SWELLS OF 6 TO 7 FT WITH SE WINDS FROM 10 TO 15 KTS. MTRPIL CHECKS IN WITH A SE WIND FROM 10 TO 15 KTS. THIS IS REFLECTED WELL IN THE CURRENT CWF AND WILL MAINTAIN THIS WORDING ATTM. SYNOPTIC/MARINE/AVIATION...60/MESO...WATKINS INTERNET ADDRESS...WWW.SRH.NOAA.GOV/BRO .BRO...NONE. @ RUKWBCe&KDENFXUS64 KBRO 240237 AFDBRO DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 935 PM CDT MON APR 23 2001 SHORT TERM...KBRO RADAR SHOWS A BKN LINE OF CONV FORMING UP ALONG AND TO THE SOUTH AND EAST OF THE COLD FRONT EXTENDING SOUTHWEST FROM LA ROUGHLY PARRALELING THE TX COASTLINE. THIS LINE HAS FORMED OVER JIM HOGG...NE STARR AND W HIDALGO COUNTIES WITH THE LINE MOVING LITTLE WITH CELLULAR MOVEMENT TO THE N-NW AT 5 TO 10 MPH. THE STRONGEST CELL IS NOW LOCATED OVER NW HIDALGO COUNTY. MSAS LIS SHOWS THE MOST UNSTABLE AIR (AROUND -8) ALONG THE COASTAL AREAS WITH MORE STABLE LIS (NEAR -4) OVER ZAPATA COUNTY. WITH THE LOSS OF THE AFTERNOON HEATING...AND THE LACK OF A GOOD UPPER LEVEL WIND ENVIRONMENT...IT APPEARS THAT THE MAIN THREAT HAS SHIFTED AWAY FROM SVR WX TOWARDS A POSSIBLE HVY RAIN EVENT DUE TO THE SLOW MOVEMENT OF THE CELLS. HOWEVER...THE WIDELY SCT TO SCT NATURE OF THE CELLS DO NOT APPEAR TO WARRENT A FLOOD/FLASH FLOOD WATCH ATTM. IN ADDITION FLASH FLOOD TREASHOLDS OVER THE CWA REMAIN FAIRLY HIGH DUE TO THE DRY SOIL CONDITIONS OVER THE FORECAST AREA. RUC AND MESO-ETA DATA SHOW GOOD 5H PVA PERSISTING OVER THE CWA WITH THE BEST PVA EVIDENT FROM 06-12Z TUES MORNING AS THE SURFACE FRONT PUSHES THROUGH THE REGION. THIS WILL MAINTAIN THE BEST CONV CHCS MAINLY AFTER MIDNIGHT. OVERALL...CURRENT FORECAST WORDING LOOKS GOOD WITH NO CHANGES REQUIRED ATTM. MARINE...BOY020 REPORTS SWELLS OF 6 TO 7 FT WITH SE WINDS FROM 10 TO 15 KTS. MTRPIL CHECKS IN WITH A SE WIND FROM 10 TO 15 KTS. THIS IS REFLECTED WELL IN THE CURRENT CWF AND WILL MAINTAIN THIS WORDING ATTM. SYNOPTIC/MARINE/AVIATION...60/MESO...WATKINS INTERNET ADDRESS...WWW.SRH.NOAA.GOV/BRO .BRO...NONE.
In the hours before
Local storm report, Apr 23, 11:55 PM CDT, 2 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BROWNSVILLE,TX
1150 PM CST MON APR 23 2001
TIME(CST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1030 PM RACHAL TX DOWNED POWER LINES
04/23/01 BROOKS BROOKS COUNTY EMC
SPEECEThe office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 9:47 PM CDT | Severe Thunderstorm Warning | BRO | Brooks, Kenedy | 58 min |
| Apr 23, 10:08 PM CDT | Severe Thunderstorm Warning | BRO | Brooks | 52 min |
| Apr 23, 10:39 PM CDT | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 66 min |
| Apr 23, 11:05 PM CDT | Flash Flood Warning | BRO | Brooks | 3 hr |
| Apr 23, 11:35 PM CDT | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo, Kenedy, Willacy | 55 min |
| Apr 24, 12:33 AM CDT | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo, Kenedy, Willacy | 57 min |
| Apr 24, 1:34 AM CDT | Severe Thunderstorm Warning | BRO | Kenedy, Willacy | 56 min |
| Apr 24, 1:34 AM CDT | Severe Thunderstorm Warning | BRO | Cameron | 56 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001
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.