Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 124, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 29, 1987, 2:35 AM CDT for Val Verde County, Texas. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- May 29, 1987, 2:35 AM CDT (07:35 UTC)
- Expired
- May 29, 1987, 4:49 AM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Val Verde County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 7.6 hours before the alert went out and 66 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
- 4195 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 880 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 10.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, May 28, 10:33 PM CDT, 4 hours 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 1030 PM CDT THU MAY 28 1987 ...TORNADO WATCH IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES CENTRAL TEXAS...BURNET...GILLESPIE...LAMPASAS...LLANO...MILLS AND SAN SABA. THUNDERSTORMS HAVE DECREASED IN INTEMSTY OVER THIS AREA. AT 1010 PM CDT AUSTIN RADAR SHOWED AN BROAD AREA SHOWERS AND THUNDER STORMS FROM NORTHEAST OF WACO WESTWARD THROUGH WACO...LAMPASAS AND SAN SABA TO WEST OF BRADY. THIS AREA OF THUNDERSTORMS HAS DECREASED SLOWLY IN INTEMSTY. MOVEMENT WAS EAST SOUTHEAST AT NEAR 20 MPH.
Special weather statement, May 28, 11:17 PM CDT, 3 hours 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1117 PM CDT THU MAY 28 1987 ...TORNADO WATCH IS IN EFFECT UNTIL 100 AM CDT FOR VAL VERDE COUNTY INCLUDING THE CITY OF DEL RIO... AT 11 PM CDT RADAR INDICATED AN AREA THUNDERSTORMS IN THE SOUTHERN HALF OF VAL VERDE COUNTY MOVING TO THE EAST AT AROUND 10 MPH. AN INTENSE STROM WAS LOCATED 20 MILES W OF DEL RIO INSIDE MEXICO MOVING SLOWLY NORTHEAST. HEAVY RAIN HAS FALLEN IN SOME PARTS OF SOUTH VAL VERDE COUNTY AND LOW WATER CROSSINGS AND LOW LYING AREAS EITHER HAVE FLOODED OR COULD FLOOD WITH ANOTHER STRONG DOWNPOUR. THE POTENTIAL FOR SEVERE THUNDERSTORMS EXISTS WITH THE UNSTABLE ATMOSPHERE AND MOIST SOUTHEAST FLOW. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE CWARNINGS.
Special weather statement, May 28, 11:22 PM CDT, 3 hours 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1117 PM CDT THU MAY 28 1987 ...TORNADO WATCH IS IN EFFECT UNTIL 100 AM CDT FOR VAL VERDE COUNTY INCLUDING THE CITY OF DEL RIO... AT 1112 PM CDT RADAR INDICATED AN AREA THUNDERSTORMS IN THE SOUTHERN HALF OF VAL VERDE COUNTY MOVING TO THE EAST AT AROUND 10 MPH. AN INTENSE STORM WAS LOCATED 20 MILES W OF DEL RIO INSIDE MEXICO MOVING SLOWLY NORTHEAST. HEAVY RAIN HAS FALLEN IN SOME PARTS OF SOUTH VAL VERDE COUNTY AND LOW WATER CROSSINGS AND LOW LYING AREAS EITHER HAVE FLOODED OR COULD FLOOD WITH ANOTHER STRONG DOWNPOUR. THE POTENTIAL FOR SEVERE THUNDERSTORMS EXISTS WITH THE UNSTABLE ATMOSPHERE AND MOIST SOUTHEAST FLOW. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSEIBLE WARNINGS.
Special weather statement, May 29, 12:28 AM CDT, 2 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1228 AM CDT FRI MAY 29 1987 AT 1215 AM CDT RADAR INDICATED AN INTENSE THUNDERSTORM ABOUT 20 MILES WEST OF DEL RIO IN MEXICO MOVING EAST AT AROUND 20 MPH. RADAR IS INDICATING HAIL ASSOCIATED WITH THIS STORM. EXCEPT IN THE EXTREME NORTHWEST THUNDERSTORMS CONTINUE TO ROMP TO THE NORTHEAST ACROSS VAL VERDE COUNTY. HEAVY RAIN HAS FALLEN IN SOME PARTS OF SOUTH VAL VERDE COUNTY AND LOW WATE}R CROSSINGS AND LOW LYING AREAS EITHER HAVE FLOODED OR COULD FLOOD WITH ANOTHER STRONG DOWNPOUR. STRONG GUSTY WINDS...DAMAGING HAIL...AND HEAVY RAIN ARE POSSIBLE WITH A THUNDERSTORM AS INTENSE AS THE ONE NOW NEAR DEL RIO.
Special weather statement, May 29, 1:27 AM CDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 127 AM CDT FRI MAY 29 1987 ...A SEVERE THUNDERSTORM WATCH COVERS ALL OF VAL VERDE COUNTY UNTIL 7 AM CDT... AT 115 AM CDT RADAR INDICATED A VERY STRONG THUNDERSTORM ABOUT 10 MILES WEST OF DEL RIO IN MEXICO MOVING EAST AT AROUND 25 MPH. THUNDERSTORMS ARE NOW SCATTERED OVER ALL OF VAL VERDE COUNTY. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 29, 2:06 AM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 200 AM CDT FRI MAY 19 1987 ...VERY INTENSE THUNDERSTORMS NOW MOVING NORTHWARD AND AWAY FROM AUSTIN... JUST BEFORE 2 AM...RADAR SHOWED A LINE OF VERY INTENSE THUNDERSTORMS... TO EXTEND FROM JUST NORTH OF COLLEGE STATION AND AUSTIN THROUGH KERR- VILLE AND ON INTO THE WESTERN HILL COUNTRY. THE STRONGEST STORMS WERE LOCATED NEAR CAMERON...IN MILAM COUNTY AND OVER WILLIAMSON COUNTY NEAR HUTTO AND LEANDER. THOSE INDIVIDUAL STORMS WERE MOVING TOWARDS THE NORTH NORTHEAST AT 30 MPH. NO SEVERE WEATHER HAS BEEN REPORTED TO OR DETECTED BY THIS OFFICE AT THIS TIME BUT CONDITIONS REMAIN VERY UNSTABLE. CONTINUE THE SEVERE THUNDERSTORM WATCH...WHICH COVERS TRAVIS AND ALL SURROUNDING COUNTIES.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 7:05 PM CDT | Tornado Warning | EWX | Val Verde | 70 min |
| May 28, 8:20 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 70 min |
| May 28, 9:13 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 62 min |
| May 28, 9:55 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 65 min |
| May 28, 10:18 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 57 min |
| May 28, 11:14 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 61 min |
| May 29, 12:24 AM CDT | Severe Thunderstorm Warning | EWX | Real, Uvalde | 66 min |
| May 29, 12:24 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 66 min |
| May 29, 1:35 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Medina, Uvalde | 55 min |
| May 29, 2:32 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Medina | 58 min |
| May 29, 3:14 AM CDT | Flash Flood Warning | EWX | Travis, Williamson | 2 hr |
| May 29, 3:19 AM CDT | Flash Flood Warning | EWX | Bandera, Kendall, Kerr, Real | 4 hr |
| May 29, 3:19 AM CDT | Flash Flood Warning | EWX | Medina, Uvalde | 4 hr |
| May 29, 3:30 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Real, Uvalde | 60 min |
| May 29, 3:30 AM CDT | Severe Thunderstorm Warning | EWX | Kendall | 60 min |
| May 29, 3:30 AM CDT | Severe Thunderstorm Warning | EWX | Medina | 60 min |
| May 29, 4:39 AM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell, Hays | 4 hr |
| May 29, 4:39 AM CDT | Flash Flood Warning | EWX | Lee | 4 hr |
| May 29, 4:39 AM CDT | Flash Flood Warning | EWX | Blanco | 4 hr |
| May 29, 4:55 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Medina, Uvalde | 65 min |
| May 29, 4:58 AM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick | 62 min |
| May 29, 7:27 AM CDT | Flash Flood Warning | EWX | Bandera, Medina, Uvalde | 4 hr |
| May 29, 11:58 AM CDT | Flash Flood Warning | EWX | Edwards, Kerr, Real | 3 hr |
| May 29, 1:32 PM CDT | Severe Thunderstorm Warning | EWX | Kerr | 58 min |
| May 29, 2:23 PM CDT | Flash Flood Warning | EWX | Edwards, Kerr, Real | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 1987Every severe thunderstorm warning in 1987
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.