Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 3, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at Apr 23, 2001, 10:08 PM CDT for Brooks County, Texas. It was in force for 52 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 23, 2001, 10:08 PM CDT (03:08 UTC)
- Expired
- Apr 23, 2001, 11:00 PM CDT
- In force
- 52 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Brooks County, TX
The radar
The Corpus Christi radar (KCRP), 109 km from the middle of the area, began a volume at 03:11 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 23, 10:30 PM CDT | Thunderstorm Wind 60 E | Rachal, TX | Thunderstorm winds knocked down power lines. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 3.1 hours before the alert went out and 116 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
- 1834 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 724 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- -24 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KBRO 240309 SVRBRO TXC047-240400- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 1008 PM CDT MON APR 23 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BROOKS COUNTY IN SOUTH CENTRAL TEXAS * UNTIL 1100 PM CDT * AT 1006 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 15 MILES SOUTHWEST OF FALFURRIAS TO 28 MILES SOUTHWEST OF FALFURRIAS...MOVING EAST AT 20 MPH. THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE DIME SIZE HAIL... AND WINDS IN EXCESS OF 60 MPH. * THE SEVERE THUNDERSTORMS WILL REMAIN OVER MAINLY RURAL AREAS OF... CENTRAL...EASTERN AND SOUTHEASTERN BROOKS COUNTY. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WINDS...LARGE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...AND VERY HEAVY RAIN ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. $$ LAT...LON 2715 9846 2679 9843 2680 9802 2712 9799 SPEECE/WATKINS
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, 33 minutes earlier.
Area forecast discussion, Apr 23, 9:35 PM CDT, 33 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.
The 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, 10:39 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 |
| Apr 24, 2:41 AM CDT | Severe Thunderstorm Warning | BRO | Cameron, Willacy | 64 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.