Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 25, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at May 19, 2000, 10:01 PM CDT for Zapata County, Texas. It was in force for 44 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
- May 19, 2000, 10:01 PM CDT (03:01 UTC)
- Expired
- May 19, 2000, 10:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Zapata County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 3.0 hours before the alert went out and 198 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
- 3311 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 625 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 8.1
The text
As transmitted, in the capitals the NWS used until 2016.
449 WUUS54 KBRO 200302 SVRBRO TXC505-200345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BROWNSVILLE TX 1001 PM CDT FRI MAY 19 2000 THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN ZAPATA COUNTY IN DEEP SOUTH TEXAS * UNTIL 1045 PM CDT * AT 1001 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES NORTH OF SAN YGNACIO...MOVING SOUTH AT 20 MPH. THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE DIME SIZE HAIL...AND WINDS IN EXCESS OF 60 MPH. * THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF... NORTHERN ZAPATA COUNTIES. IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM WINDOWS. REMEMBER...SEVERE THUNDERSTORMS PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING...AND VERY HEAVY RAIN. $$ LAT...LON 2752 9899 2749 9951 2704 9940 2712 9898 SPEECE/MILLER
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 May 19, 8:55 PM CDT, 1 hour 6 minutes earlier.
Area forecast discussion, May 19, 8:55 PM CDT, 1 hour 6 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 855 PM CDT FRI MAY 19 2000 SHORT TERM...KBRO RADAR IMAGES SHOWS TWO MAIN CONV AREAS OF CONCERN FOR THE DEEP SOUTH TX CWA. THE FIRST IS LOCATED OVER WEBB COUNTY. THE SECOND IS LOCATED OVER THE NE CORNER OF MEX ABOUT 160 MILES W OF BRO. THE STATIONARY AREA OVER NE MEX APPEARS TO BE OROGRAPHICALLY DRIVEN AND HAS SHOWN NO INTENSFICATION ATTM. HOWEVER...THE AREA NEAR LRD HAS A CELLUAR MOVEMENT OF 15 MPH TO THE SE AND APPEARS TO BE BUILDING INTO AN AREA OF UNSTABLE LIS DOMINATING THE FAR WESTERN CWA AS PER MSAS DATA. LI VALUES DO BECOME STABLE TO THE SOUTH AS MSAS SHOWS A -7 TO -8 LI OVER WEBB COUNTY AND -5 TO -6 OVER ZAPATA COUNTY. IR SATL IMAGERY INDICATES VERY COLD CLD TOPS OVER WEBB COUNTY. THIS CELL WILL LIKELY LINGER LONG ENOUGH IN THE ABOVE MENTIONED INSTABILITY FIELD TO MAKE IT INTO ZAPATA COUNTY. MESO-ETA CHARTS INDICATE THAT THIS CONV IS FIRING ALONG AND AHEAD OF A FAIRLY POTENT 5H VORT MAX OVER THE CRP CWA. THIS FEATURE GRADUALLY DROPS SE AND IS LOCATED OVER THE BRO CWA AROUND 12Z SAT. ETA X-SECTIONS ALSO SHOWS A DRAMATIC INCREASE IN MEAN RH VALUES BETWEEN 06 AND 12Z SAT WHICH IS SUPPORTED BY THE 00Z BRO SOUNDING WHICH SHOWS PWAT VALUES JUMPING TO 2.05 INCHES AND LI VALUES REACHING -7.5. ALL IN ALL...THIS WILL RESULT IN STEADILY INCREASING CONV CHC THROUGH THE NIGHT AND SAT AM. SO OVERALL WILL NOT CHANGE THE DEEP SOUTH TX ZFP MUCH ATTM...OTHER THAN TO INCREASE POPS OVER THE WESTERNMOST ZONES. WILL LEAVE 20 % IN PLACE OVER THE EASTERN ZONES AS ANY CONV ACTIVITY HERE WILL LIKELY BE DELAYED UNTIL EARLY SAT. MARINE...SURFACE WINDS OVER THE BAY AREA ARE SLOWLY DECREASING ATTM BUT WILL REMAIN STRONG THROUGH THE OVERNIGHT HOURS. THE LINGERING PGF WILL MAINTAIN CHOPPY BAY WATERS THROUGH THE NIGHT AND GULF SWELLS FROM 4 TO 5 FT. THIS IS HANDLED WELL IN THE CURRENT CWF AND NO MAJOR CHANGES ARE NEEDED ATTM. SYNOPTIC...60/MESO...54/HMT...ABBOTT .WFO BRO INTERNET ADDRESS... WWW.SRH.NOAA.GOV/BRO .BRO...NONE.
In the hours before
Special weather statement, May 19, 6:30 PM CDT, 3 hours 31 minutes before
TXZ248>257-200400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BROWNSVILLE TX 630 PM CDT FRI MAY 19 2000 ...ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THIS WEEKEND FOR DEEP SOUTH TEXAS... A COMBINATION OF A STATIONARY FRONT AND A WARM...MOIST AND UNSTABLE AIRMASS OVER SOUTHERN TEXAS WILL PROVIDE THE MECHANISM FOR ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS OVER PORTIONS OF SOUTHERN TEXAS TONIGHT AND SATURDAY. AT THIS MOMENT...THE BEST CHANCES FOR SEVERE WEATHER APPEAR TO BE CONCENTRATED OVER SOUTH CENTRAL AND WESTERN TEXAS TONIGHT AND SATURDAY. HOWEVER...ISOLATED TO SCATTERED THUNDERSTORMS PRODUCING LOCALLY HEAVY RAINS WILL REMAIN A POSSIBILITY FOR DEEP SOUTH TEXAS THROUGHOUT THE WEEKEND. THE BEST CHANCES FOR SHOWERS AND THUNDERSTORMS FOR DEEP SOUTH TEXAS WILL BE THROUGHOUT THE DAY SATURDAY. HOWEVER...THE POTENTIAL FOR SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE SATURDAY NIGHT AND INTO SUNDAY. RESIDENTS OF DEEP SOUTH TEXAS SHOULD STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION...BROADCASTING FROM THE NATIONAL WEATHER SERVICE OFFICE HERE IN BROWNSVILLE.
Nearby
Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000
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.