Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 132, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 1, 1987, 10:45 PM CDT for Val Verde County, Texas. It was in force for 70 min.
The area
The counties it named.
The facts
- Issued
- Jun 1, 1987, 10:45 PM CDT (03:45 UTC)
- Expired
- Jun 1, 1987, 11:55 PM CDT
- In force
- 70 min
- 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, 3.8 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
- 3771 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 849 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 9.2
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, Jun 1, 7:47 PM CDT, 2 hours 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 745 PM CDT MON JUN 1 1987 ...THUNDERSTORMS ARE MOVING INTO THE DEL RIO-LAKE AMISTAD AREA... AT 735 PM CDT RADAR INDICATED A BAND OF THUNDERSTORMS FROM 20 TO 50 MILES NORTH AND WEST OF DEL RIO MOVING INTO THE DEL RIO-LAKE AMISTAD AREA AT AROUND 10 MPH. A PARTICULARLY INTENSE STORM IS ABOUT 40 MILES SOUTHWEST OF THE CITY OF DEL RIO AT THIS TIME MOVING EAST. OTHER THUNDERSTORMS AND SHOWERS STRECH BACK UP THE PECOS VALLEY INTO SOUTHERN NEW MEXICO AND ARE MOVING DOWN IT TO SOUTHEAST DOWN THE VALLEY OF THE PECOS INTO THE COUNTY. BOATERS SHOULD CONSIDER IMMEDIATELY SEEKING SAFE HARBOUR AS STRONG WINDS AND DANGEROUS LIGHTNING ARE LIKELY NEAR THESE STORMS. THE POSSIBLITY OF HEAVY RAINS WITH THESE STORMS IS HIGH AS THEY ARE MOVING SLOWLY EVERYONE DRIVING IN THE CITY AREA SHOULD BE PREPARED FOR THE FLOODING OF LOW WATER CROSSINGS. YOUR NATIONAL WEATHER SERVICE WILL ISSUE ADDITIONALS STATEMENTS...SO STAY TUNED TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO.
Special weather statement, Jun 1, 8:12 PM CDT, 2 hours 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 812 PM CDT MON JUN 1 1987 SCATTERED THUNDERSTORMS WITH FREQUENT LIGHTNING AND VERY HEAVY RAIN HAVE CONTINUED FROM NORTHEAST WEBB COUNTY NORTHWARD TO NEAR COTULLA FOR THE PAST HOUR. THESE STORMS WERE MOVING TO THE NORTH AT NEAR 15 MPH. THE MOST INTENSE STORM WAS LOCATED IN NORTHEAST WEBB COUNTY AND WAS POISED TO MOVE OVER STATE HIGHWAY 44 WITHIN THE NEXT HALF HOUR. DUE TO THE HEAVY RAIN AND REDUCED VISIBILITY...TRAVEL MAY BE VERY DIFFICULT IN AND NEAR THIS STORM. MOTORISTS SHOULD ALSO BE ALERT TO BRIEF FLOODING OF LOW LYING AND POORLY DRAINED AREAS AROUND AND NEAR THESE STRONG THUNDERSTORMS FOR THE NEXT HOUR OR TWO. 1 NO ONE SHOULD ATTEMPT TO CROSS INTO DEEP WATER.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 11:05 PM CDT | Flash Flood Warning | EWX | Val Verde | 4 hr |
| Jun 1, 11:42 PM CDT | Flash Flood Warning | EWX | Zavala | 2 hr |
| Jun 2, 3:50 PM CDT | Flash Flood Warning | EWX | Guadalupe | 3 hr |
| Jun 2, 6:32 PM CDT | Flash Flood Warning | EWX | Gonzales, Wilson | 4 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.