Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 3, NWS Brownsville, TX
NWS Brownsville, TX issued this tornado warning at Mar 27, 1999, 11:22 PM CST for Hidalgo County, Texas. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Mar 27, 1999, 11:22 PM CST (05:22 UTC)
- Expired
- Mar 27, 1999, 11:45 PM CST
- In force
- 23 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Hidalgo County, TX
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 00:00Z, 5.4 hours before the alert went out and 79 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
- 1929 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBRO 280524 TORBRO TXC215-280545- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 1122 PM CST SAT MAR 27 1999 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN HIDALGO COUNTY IN TEXAS THIS INCLUDES THE CITIES OF...ALAMO...DONNA...EDCOUCH...EDINBURG... ELSA...LOPEZVILLE...MERCEDES...SAN JUAN...WESLACO * UNTIL 1145 PM CST * AT 1119 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES EAST OF LOPEZVILLE...MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 5 MILES NORTH OF DONNA AT 1135 PM CST 4 MILES SOUTH OF ELSA AT 1140 PM CST OVER MILA DOCE...4 MILES SOUTH OF EDCOUCH...5 MILES NORTH OF WESLACO AT 1145 PM CST 5 MILES SOUTH OF LA VILLA...5 MILES NORTH OF MERCEDES AT 1150 PM CST REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN BROWNSVILLE. SPEECE LAT...LON 2637 9818 2619 9822 2611 9789 2633 9788
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 Mar 27, 7:45 PM CST, 3 hours 37 minutes earlier.
Area forecast discussion, Mar 27, 7:45 PM CST, 3 hours 37 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 745 PM CST SAT MAR 27 1999 SIGNIFICANT WEATHER UNDERWAY OVER NORTHEAST MEXICO AND DEEP SOUTH TEXAS CAUSED BY UPPER AIR LOW AMBLING SLOWLY NORTHEAST FROM MEXICO..WILL TAPER OFF LATE LATER TONIGHT AS ENERGY MAKING STORMS RACES NORTHEAST. HOWEVER..STORM DEVELOPMENT IS EXPECTED AGAIN TOMORROW BUT STARTING MORE EAST THAN CURRENT POSITION KEEPING WITH LOWS EASTWARD MIGRATION. FORECAST UNDERWAY LOOKS APPROPRIATE WITH 60 POPS TONIGHT AND TOMORROW..POSSIBLY SEVERE STORMS..HEAVY RAINFALL. PRECIP ALGO SUPPORTS THE POPS. BY TOMORROW NIGHT..LAND AREA WILL BE UNDER THE INFLUENCE OF SUBSIDING AIR IN THE LOWS WAKE..GULF OF MEXICO WILL NOT HOWEVER..WHERE STORMY WEATHER WILL DOMINATE. SO FAR..MOST DAMAGE HAS BEEN FROM WIND. .BRO...SCA RIO GRANDE-BAFFIN BAY OUT 50 NM INCLUDING BAYS. GRADIENT IS STILL QUITE STRONG. 62
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 6:02 PM CST | Severe Thunderstorm Warning | BRO | Zapata | 28 min |
| Mar 27, 6:38 PM CST | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 37 min |
| Mar 27, 7:17 PM CST | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 43 min |
| Mar 27, 8:04 PM CST | Severe Thunderstorm Warning | BRO | Hidalgo | 41 min |
| Mar 27, 8:18 PM CST | Severe Thunderstorm Warning | BRO | Starr, Zapata | 42 min |
| Mar 27, 8:28 PM CST | Tornado Warning | BRO | Hidalgo | 32 min |
| Mar 27, 8:33 PM CST | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo, Kenedy, Willacy | 57 min |
| Mar 27, 9:04 PM CST | Severe Thunderstorm Warning | BRO | Jim Hogg, Starr, Zapata | 56 min |
| Mar 27, 9:54 PM CST | Flash Flood Warning | BRO | Jim Hogg, Starr | 4 hr |
| Mar 27, 10:00 PM CST | Severe Thunderstorm Warning | BRO | Jim Hogg, Starr | 60 min |
| Mar 27, 10:34 PM CST | Severe Thunderstorm Warning | BRO | Brooks, Hidalgo, Kenedy, Starr | 56 min |
| Mar 27, 10:50 PM CST | Tornado Warning | BRO | Hidalgo | 35 min |
| Mar 27, 11:28 PM CST | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo, Kenedy, Willacy | 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.