Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 135, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 22, 1987, 1:12 AM CDT for Maverick County, Texas. It was in force for 63 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 22, 1987, 1:12 AM CDT (06:12 UTC)
- Expired
- Jun 22, 1987, 2:15 AM CDT
- In force
- 63 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Maverick County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 1:20 AM CDT | Thunderstorm Wind 101 | Maverick, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 6.2 hours before the alert went out and 86 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
- 3748 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1103 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 11.0
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 21, 9:27 PM CDT, 3 hours 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
930 PM CDT SUN JUN 21 1987
...LINE OF THUNDERSTORMS APPROACHING HILL COUNTRY...
AT 920 PM CDT...NATIONAL WEATHER SERVICE RADAR WAS INDICATING A LINE OF
STRONG THUNDERSTORMS EXTENDING NORTH TO SOUTH ACROSS EXTREME EASTERN
VAL VERDE COUNTY. MOVEMENT WAS EAST AT 30 MILES AN HOUR. THIS MOVEMENT
WILL TAKE THE STORMS INTO WESTERN EDWARDS AND KINNEY COUNTIES WITHIN THE
NEXT HALF HOUR.
A DISTINCT SIGNATURE KNOWN TO BE ASSOCIATED WITH STRONG AND POSSIBLY
DAMAGING WIND HAS BEEN NOTED ON RADAR WITH THIS LINE OF STORMS. IN
FACT...REPORTS IN AND AROUND THE DEL RIO AREA OF WIND GUSTS NEAR 50
MILES AN HOUR HAVE BEEN RECEIVED WITHIN THE PAST FEW MINUTES.
IN ADDITION TO STRONG WIND...RESIDENTS ACROSS THE HILL COUNTRY MAY
EXPERIENCE FREQUENT LIGHTNING...BRIEF HEAVY RAIN AND SMALL HAIL AS THESE
STORMS PASS. STAY TUNED TO LOCAL RADIO...TV OR NOAA WEATHER RADIO FOR
ADDITIONAL STATEMENTS OR POSSIBLE WARNINGS.Special weather statement, Jun 21, 10:09 PM CDT, 3 hours 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1010 PM CDT SUN JUN 21 1987 ...THUNDERSTORMS OBSERVED IN THE DEL RIO AREA... AT 1005 PM CDT THUNDERSTORMS WITH RAIN...STRONG GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING WERE OBSERVED AT THE DEL RIO INTERNATIONAL AIRPORT. A WIND GUST OF 48 MPH WAS OBSERVED AT THE AIRPORT DURING THE PAST HOUR. RADAR ALSO INDICATED THUNDERSTORMS THROUGHOUT VAL VERDE COUNTY. ALL OF THE STORMS WERE MOVING TO THE EAST AT 30 MPH.
Special weather statement, Jun 21, 11:16 PM CDT, 1 hour 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1115 PM CDT SUN JUN 21 1987 ...THUNDERSTORMS ARE CONTINUING IN THE DEL RIO AREA... A PERSISTENTLY INTENSE CLUSTER OF THUNDERSTORMS IN THE PAST HOUR HAS BEEN SLOWLY MOVING CLOSER TO DEL RIO. AT 1105 PM CDT THIS CLUSTER OF THUNDERSTORMS WAS ABOUT 15 MILES SOUTHWEST OF DEL RIO MOVING TO THE NORTHEAST AT AROUND 15 MPH. AT 1105 PM CDT RADAR INDICATED A BELT OF THUNDERSTORMS FROM SAN ANGELO TO JUNCTION TO JUST NORTHWEST OF DEL RIO AND ON TO THE SOUTHWEST FOR ABOUT 100 MILES INTO MEXICO. THUNDERSTORMS OF VERY HEAVY TO INTENSE STRENGTH WERE OCCURRING FREQUENTLY IN THIS BELT. OVER ALL MOVEMENT WAS TO THE EAST...BUT SHOWERS AND THUNDERSTORMS HAVE CONTINUED TO REFORM IN AND TRAVERSE THE SAME AREAS DURING THE LAST SEVERAL HOURS. THESE STRONGER STORMS CAN BE EXPECTED TO CONTAIN FREQUENT DANGEROUS LIGHTNING...DAMAGING WINDS...HEAVY RAIN...AND HAIL. ALL PERSONS ARE URGED NOT TO TAKE& THESE HAZARDS LIGHTLY.
Special weather statement, Jun 21, 11:22 PM CDT, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 1120 PM CDT SUN JUN 21 1987 ...THUNDERSTORMS OVER HILL COUNTRY AND EDWARDS PLATEAU DISSIPATING... A LINE OF THUNDERSTORMS THAT PRODUCED STRONG WIND GUSTS...SMALL HAIL AND HEAVY RAINS OVER VAL VERDE COUNTY EARLIER THIS EVENING IS SLOWLY DISSIPATING OVER SECTIONS OF THE HILL COUNTRY AND EDWARDS PLATEAU. AT 1115 PM CDT...RADAR WAS INDICATING ONLY LIGHT TO MODERATE SHOWERS EXTENDING OVER MUCH OF EDWARDS...REAL AND KINNEY COUNTIES. A FEW STRONG THUNDERSTORMS REMAINED OVER NORTHERN MEXICO WITH ONLY A SLOW EASTWARD MOVEMENT NOTED. WIND GUSTS TO NEAR 50 MILES AN HOUR WERE REPORTED IN AND AROUND THE DEL RIO AREA A LITTLE BEFORE 10 PM THIS EVENING. IN ADDITION...PEA- SIZED HAIL AND BRIEF HEAVY RAIN WERE REPORTED TO HAVE ACCOMPANIED THE LINE OF STORMS AS IT MOVED ACROSS THE DEL RIO AREA. DESPITE THE REPORTS OF HIGH WIND AND HEAVY RAINFALL ACROSS VAL VERDE COUNTY...NO REPORTS OF DAMAGE OR FLOODING WERE RECEIVED. WITH THE COOL OF EVENING SETTING IN...DISSIPATION OF THIS LINE OF STORMS IS EXPECTED TO CONTINUE. THIS WILL BE THE LAST STATEMENT ISSUED CONCERNING THIS WEATHER EVENT...UNLESS REDEVELOPMENT O(CCURS.
Special weather statement, Jun 22, 12:13 AM CDT, 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1215 AM CDT MON JUN 22 1987 ...THUNDERSTORMS OBSERVED IN DEL RIO... AT 1210 AM CDT THUNDERSTORMS WITH RAIN...WINDS GUSTING TO 36 MPH...AND FREQUENT DANGEROUS LIGHTNING WERE OBSERVED AT THE DEL RIO INTERNATIONAL AIRPORT. RADAR ALSO INDICATED INTENSE THUNDERSTORMS 30 MILES SOUTHWEST OF DEL RIO. ALL STORMS WERE MOVING TO THE EAST AT 30 MPH. WHEN OUTDOORS...MONITOR WEATHER CONDITIONS CLOSELY. IF THUNDER AND LIGHTNING OCCUR...USE COMMON SENSE. SEEK SHELTER IN A LARGE BUILDING OR AN ALL METAL AUTOMOBILE. IF SUCH SHELTER IS NOT AVAILABLE AVOID STANDING UNDER A TALL SOLITARY TREE...A NATURAL LIGHTNING ROD...AND DO NOT OFFER YOURSELF ASS A STANDING TARGET IN AN OPEN FIELD OR IN A BOAT ON THE WATER.
Special weather statement, Jun 22, 12:15 AM CDT, 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 1210 AM CDT MON JUN 22 1987 WEATHER RADAR INDICATED SHOWERS AND THUNDERSTORMS THAT DEVELOPED OVER WEST AND SOUTHWEST TEXAS EARLIER TONIGHT WAS MOVING ACROSS THE HILL COUNTRY FROM NEAR LLANO SOUTHWARD ACROSS THE FREDERICKSBURG AREA THEN SOUTHWEST INTO MEXICO NEAR DEL RIO. THIS AREA OF THUNDERSTORMS WAS MOVING EASTWARD AT 25 TO 30 MPH AND COULD PRODUCE LOCAL BRIEF HEAVY RAIN AND STRONG GTUSTY WINDS AS THEY MOVE EASTWARD ACROSS THE HILL COUNTRY AND CENTRAL TEXAS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 1:22 AM CDT | Tornado Warning | EWX | Maverick | 38 min |
| Jun 22, 1:44 AM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Zavala | 61 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.