Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 11, NWS Brownsville, TX
NWS Brownsville, TX issued this tornado warning at Aug 23, 1999, 10:20 PM CDT for Hidalgo County, Texas. It was in force for 40 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
- Aug 23, 1999, 10:20 PM CDT (03:20 UTC)
- Expired
- Aug 23, 1999, 11:00 PM CDT
- In force
- 40 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Hidalgo County, TX
The radar
The Brownsville radar (KBRO), 93 km from the middle of the area, began a volume at 03:20 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, 3.3 hours before the alert went out and 96 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
- 3593 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 631 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 57 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 240328 COR TORBRO TXC215-240400- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING...CORRECTION FOR PHARR ARRIVAL TIME NATIONAL WEATHER SERVICE BROWNSVILLE TX 1020 PM CDT MON AUG 23 1999 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN HIDALGO COUNTY IN TEXAS THIS INCLUDES THE CITIES OF...ALAMO...DONNA...EDCOUCH...EDINBURG... MCALLEN...MERCEDES...MISSION...PHARR...SAN JUAN...WESLACO...HIDALGO * UNTIL 1100 PM CDT * AT 1014 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH A POSSIBLE TORNADO ACROSS THE BORDER IN MEXICO ABOUT 9 MILES SOUTHWEST OF MISSION...MOVING EAST AT 20 MPH. THIS STORM WILL AFFECT THE CITIES AND TOWNS OF HIDALGO AND MCALLEN BY 1045 PM AND PHARR BY 11 PM. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. 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 HOMES 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, 8:30 PM CDT, 1 hour 50 minutes earlier.
Area forecast discussion, Aug 23, 8:30 PM CDT, 1 hour 50 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 830 PM CDT MON AUG 23 1999 STRONG THUNDERSTORMS PERSIST OVER THE MEXICAN MOUNTAINS JUST TO THE WEST OF ZAPATA COUNTY...EXTENDING NORTHWARD TO DEL RIO. NESDIS ESTIMATES AS MUCH AS 8.5 INCHES OF RAIN HAS FALLEN JUST WEST OF THE RIVER BETWEEN LRD AND DRT. THAT SHOULD MAKE FOR SOME GOOD FLOW COMING DOWN INTO FALCON LAKE. BRO SOUNDING AT 00Z SHOWS THE ATMOSPHERE CONTINUES TO STABILIZE AS REMNANTS OF BRET CONTINUE TO MOVE WEST INTO MEXICO. PW IS DOWN A BIT AS WELL. THE CLOSE PROXIMITY OF CONVECTION OUT WEST..AND PW STILL NEAR 2.0 INCHES WILL BE ENOUGH TO CONVINCE ME TO LEAVE IN ISOLATED POPS OVERNIGHT...BUT JUST FOR THE WEST ZONES. WILL TAKE POPS OUT FOR CENTRAL AND EASTERN COUNTIES. A FEW SMALL SHOWERS ALSO CONTINUE OVER THE COASTAL WATERS THIS EVENING. AM STILL WATCHING LOS OLMOS CREEK IN FALFURRIAS AS WATER CONTINUES TO BE HIGH. OFFICIALS HAVE INDICATED THAT THE RISE IS SLOWING AND FORECASTED CREST FROM WGRFC SHOWS NEAR 10 FOOT CREST OVERNIGHT WHICH SHOULD KEEP FLOODING AT A MINIMUM. WILL ISSUE ANOTHER RVS AS SOON AS NEW GAUGE DATA COMES IN. 63 .BRO...NONE.
In the hours before
Local storm report, Aug 23, 9:31 PM CDT, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
931 PM CDT MON AUG 23 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0929 PM WESLACO TX TORNADO
08/23/99 HIDALGO LOCAL SHERRIFS OFFICE
REPORTED A TORNADO 2 MILES
NORTH-NORTHEAST OF WESLACOLocal storm report, Aug 23, 9:31 PM CDT, 49 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION FOR OCCURRENCE TIME
NATIONAL WEATHER SERVICE BROWNSVILLE TX
931 PM CDT MON AUG 23 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0400 PM WESLACO TX TORNADO
08/23/99 HIDALGO LOCAL SHERRIFS OFFICE
REPORTED A TORNADO 2 MILES
NORTH-NORTHEAST OF WESLACO
SPEECEThe office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 9:50 PM CDT | Flash Flood Warning | BRO | Brooks, Kenedy | 4 hr |
| Aug 23, 10:10 PM CDT | Flash Flood Warning | BRO | Hidalgo | 3 hr |
| Aug 23, 11:07 PM CDT | Tornado Warning | BRO | Cameron, Hidalgo, Willacy | 53 min |
| Aug 24, 12:13 AM CDT | Tornado Warning | BRO | Cameron, Hidalgo | 62 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.