Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 7, NWS Brownsville, TX
NWS Brownsville, TX issued this tornado warning at Aug 23, 1999, 3:18 PM CDT for Cameron County, Hidalgo County, Texas. It was in force for 27 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
- Aug 23, 1999, 3:18 PM CDT (20:18 UTC)
- Expired
- Aug 23, 1999, 3:45 PM CDT
- In force
- 27 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
Counties Cameron County, TX, Hidalgo County, TX
The radar
The Brownsville radar (KBRO), 56 km from the middle of the area, began a volume at 20:21 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 |
|---|---|---|---|
| Aug 23, 3:30 PM CDT | Tornado F0 | Weslaco, TX | F0 tornado touched down briefly near 10th Street and Bridge Avenue. |
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
Brownsville Intl, TX (KBRO), launched 12:00Z, 8.3 hours before the alert went out and 59 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
- 1033 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1044 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBRO 232021 RRA TORBRO TXC061-215-232045- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 318 PM CDT MON AUG 23 1999 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN CAMERON COUNTY IN TEXAS SOUTHEASTERN HIDALGO COUNTY IN TEXAS THIS INCLUDES THE CITIES OF...ALAMO...DONNA...EDCOUCH...WESLACO * UNTIL 345 PM CDT * AT 315 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH A POSSIBLE TORNADO NEAR DONNA...MOVING NORTHEAST AT 20 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... EDCOUCH AND ELSA AT 335 PM CDT NEAR SANTA ROSA AT 350 PM CDT GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMESn OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Aug 23, 2:45 PM CDT, 33 minutes earlier.
Area forecast discussion, Aug 23, 2:45 PM CDT, 33 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 245 PM CDT MON AUG 23 1999 THE REMNANTS OF BRET IS MOVING NORTH OF LAREDO CAUSING SOME SHOWERS AND THUNDERSTORMS NEAR THE WATERSHED. JUST A FEW ISOLATED SHOWERS DOTTED DEEP SOUTH TEXAS TODAY...THEREFORE WILL END THE FLASH FLOOD WATCH LATER THIS AFTERNOON. THE REMNANTS OF BRET IS PROGGED TO CONT TO MOVE WEST-NORTHWEST AND DISSIPATE WITHIN THE NEXT 48 HOURS. WILL DECREASE POPS RAPIDLY IN THE NEXT FEW DAYS AS BOUNDARY LAYER RHS ARE BELOW 50 PERCENT WITHIN THE NEXT 36 HOURS. TEMPERATURES WILL INCREASE AS CLOUD COVER WILL DECREASE AND WILL MAKE ADJUSTMENTS ACCORDINGLY. WINDS WILL BE FAIRLY LIGHT FROM THE SOUTHEAST FOR THE NEXT FEW DAYS AS THE INFLUENCE OF BRET WILL NOT BE EFFECTING THE AREA. ALL MODELS SEEM TO BE IN AGREEMENT IN DECREASING MOISTURE VERY RAPIDLY IN THE NEXT FEW DAYS. CWF...BOY020 IS FROM THE EAST AT 6 KNOTS WITH SEAS GOING DOWN TO 4 FEET. THIS SHOULD CONT FOR THE NEXT FEW DAYS CAUSING WINDS TO BE BELOW SMALL CRAFT ADVISORY. LONG TERM PROGS...THE AIRMASS CONT TO BE DRY AND STABLE FOR THE EXTENDED PERIOD...ALTHOUGH A TROUGH OF LOW PRESSURE SETTLES OVER THE WESTERN GULF. DO NOT EXPECT ANY SHOWER ACTIVITY FOR THE NEXT FEW DAYS AS HIGH PRESSURE RIDGES IN FROM NEW MEXICO. 55 .BRO...NONE. .BRO 077/092/077/094/077 10/00/00/00 .MFE 075/094/076/098/076 10/00/00/00 .RGD 075/098/075/105/075 10/00/00/00 .SPI 078/088/080/090/080 10/00/00/00
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:20 PM CDT | Flash Flood Warning | BRO | Kenedy, Willacy | 3 hr |
| Aug 22, 10:15 PM CDT | Flash Flood Warning | BRO | Brooks, Kenedy | 6 hr |
| Aug 23, 4:18 AM CDT | Flash Flood Warning | BRO | Brooks, Kenedy | 8 hr |
| Aug 23, 4:18 AM CDT | Flash Flood Warning | BRO | Willacy | 8 hr |
| Aug 23, 11:59 AM CDT | Flash Flood Warning | BRO | Cameron | 4 hr |
| Aug 23, 2:59 PM CDT | Tornado Warning | BRO | Kenedy, Willacy | 31 min |
| Aug 23, 3:34 PM CDT | Tornado Warning | BRO | Kenedy | 41 min |
| Aug 23, 3:44 PM CDT | Tornado Warning | BRO | Cameron, Hidalgo, Willacy | 61 min |
| Aug 23, 4:27 PM CDT | Tornado Warning | BRO | Willacy | 63 min |
| Aug 23, 6:55 PM CDT | Flash Flood Warning | BRO | Hidalgo | 3 hr |
Nearby
Tornado Warnings in Texas, 1999Every tornado warning in 1999Tornadoes in 1999
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.