Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 61, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 15, 1987, 5:12 AM CDT for Medina County, Texas. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- May 15, 1987, 5:12 AM CDT (10:12 UTC)
- Expired
- May 15, 1987, 6:00 AM CDT
- In force
- 48 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Medina 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, 10.2 hours before the alert went out and 168 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
- 3535 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1144 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.4
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 15, 2:00 AM CDT, 3 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 201 AM CDT FRI MAY 15 1987 ...THUNDERSTORMS OBSERVED IN THE DEL RIO AREA... AT 200 AM CDT THUNDERSTORMS WITH RAINSHOWERS AND FREQUENT DANGEROUS LIGHTNING WERE OBSERVED AT THE DEL RIO INTERNATIONAL AIRPORT. PEA SIZE HAIL WAS REPORTED DURING THE PAST HOUR FROM THUNDERSTORMS IN NORTHERN VAL VERDE COUNTY. THESE STORMS WERE MOVING TO THE EAST AT 15 MPH. HEAVY RAIN AND STRONG GUSTY WINDS ARE ALSO POSSIBLE WITH THESE STORMS.
Special weather statement, May 15, 2:10 AM CDT, 3 hours 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 210 AM CDT THU MAY 14 1987 VERY HEAVY THUNDERSTORMS HAVE JUST MOVED INTO WESTERN EDWARDS COUNTY. THESE STORMS ARE MOVING TO THE EAST AT AROUND 15 MPH. THE THUNDERSTORMS ARE VERY NEAR CARTA VALLEY AND SHOULD THEY CONTINUE MOVING AT THIS SPEED THEY WILL BE IN THE ROCKS SPRINGS AREA SOMETIME AFTER 3 AM THIS MORNING. STRONG GUSTY WINDS...LOCALLY HEAVY RAIN...FREQUENT LIGHTNING AND HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS. PERSONS IN EDWARDS COUNTY SHOULD REMAIN ALERT AND BE PREPARED TO TAKE NECESSARY ACTION SHOULD A WARNING BE ISSUED.
Special weather statement, May 15, 2:56 AM CDT, 2 hours 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 255 AM CDT FRI MAY 15 1987 ...LINE OF THUNDERSTORMS APPROACHING THE TEXAS HILL COUNTRY... A LINE OF VERY INTENSE THUNDERSTORMS IS MOVING INTO WESTERN SECTIONS OF EDWARDS AND KINNEY COUNTIES THIS MORNING. MOVEMENT OF THE LINE IS EAST AT 15 MILES AN HOUR. WEATHER SERVICE RADAR HAS INDICATED OVER THE PAST FEW MINUTES THAT A FEW OF THE STORMS WITHIN THE LINE...ESPECIALLY OVER WESTERN EDWARDS COUNTY... MAY BE PRODUCING STRONG SURFACE WIND. IN ADDITION...PERIODS OF VERY HEAVY RAIN...FREQUENT LIGHTNING AND SMALL HAIL ARE POSSIBLE AS THEY CONTINUE EAST ACROSS THE COUNTIES. RESIDENTS OF BOTH EDWARDS AND KINNEY COUNTIES SHOULD CLOSELY MONITOR THESE STORMS FOR THE NEXT HOUR OR SO AND BE PREPARED TO TAKE NECESSARY ACTIONS SHOULD A WARNING BE ISSUED. STAY TUNED TO LOCAL RADIO...TV... NOAA WEATHER RADIO.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 11:25 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 65 min |
| May 15, 12:30 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 75 min |
| May 15, 2:14 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 61 min |
| May 15, 3:45 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 60 min |
| May 15, 4:45 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 30 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; the sounding from the Mesonet's radiosonde archive.