Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 177, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Nov 16, 1987, 5:30 AM CST for DeWitt County, Texas. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Nov 16, 1987, 5:30 AM CST (11:30 UTC)
- Expired
- Nov 16, 1987, 6:30 AM CST
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County DeWitt 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
Victoria Regiona, TX (KVCT), launched 00:00Z, 11.5 hours before the alert went out and 51 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
- 3472 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 728 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 6.3
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, Nov 15, 11:50 PM CST, 5 hours 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1150 PM CST SUN NOV 15 1987 ...THUNDERSTORMS MOVING INTO THE DEL RIO AREA... AT 1145 PM RADAR INDICATED A LARGE AREA OF THUNDERSTORMS AND RAINSHOWERS FROM 50 MILES SOUTHWEST OF DEL RIO...NORTH TO JUNO TO LOMA ALTA AND SOUTH TO EAGLE PASS. THE STRONGEST THUNDERSTORM WAS BEGINNING TO MOVE THROUGH THE DEL RIO AREA. MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTHEAST AT 30 MPH. HEAVY RAIN...SMALL HAIL...FREQUENT DANGEROUS LIGHTNING AND STRONG GUSTY WINDS ARE POSSIBLE WITH THESE STORMS. REMEMBER...LIGHTNING AND GUSTY WINDS CAN OCCUR SOME DISTANCE FROM THE MAIN THUNDERSTORM CLOUD...SO DON`T BE CAUGHT UNAWARE...ALLOW YOURSELF PLENTYu OF TIME TO REACH A PLACE OF SAFETY IF CONDITIONS BECOME THREATENING. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT...SO STAY TUNED TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATIONS.
Special weather statement, Nov 16, 12:58 AM CST, 4 hours 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1258 AM CST MON NOV 16 1987 AT 1250 AM RADAR INDICATED THUNDERSTORMS THROUGHOUT NORTH AND NORTHEASTERN VAL VERDE COUNTY...NORTH OF A LINE FROM LOMA ALTA TO PANDALE IN THE NORTHWEST PART OF THE COUNTY. THE STRONGEST THUNDERSTORMS WERE 35 NORTHEAST OF DEL RIO . MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTHEAST AT 25 MPH. HEAVY RAIN...SMALL HAIL...FREQUENT DANGEROUS LIGHTNING AND STRONG GUSTY WINDS ARE POSSIBLE WITH THESE STORMS. REMEMBER...LIGHTNING AND GUSTY WINDS CAN OCCUR SOME DISTANCE FROM THE MAIN THUNDERSTORM CLOUD...SO DON`T BE CAUGHT UNAWARE...ALLOW YOURSELF PLENTY OF TIME TO REACH A PLACE OF SAFETY IF CONDITIONS BECOME9 THREATENING. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT...SO STAY TUNED TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATIONS.
Special weather statement, Nov 16, 1:49 AM CST, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 149 AM CST MON NOV 16 1987 ...A TORNADO WATCH IS IN EFFECT FOR VAL VERDE COUNTY INCLUDING THE CITY OF DEL RIO UNTIL 800 AM THIS MONDAY MORNING... THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES EITHER SIDE OF A LINE FROM 70 MILES WEST OF COTULLA TEXAS TO COLLEGE STATION TEXAS. AT 145 AM RADAR INDICATED NO PRECIPITATION IN VAL VERDE COUNTY. ISOLATED RAINSHOWERS AND THUNDERSTORMS WERE LOCATED 10 MILES SOUTHWEST OF DEL RIO IN OLD MEXICO. MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTHEAST AT 20 MPH. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREAa. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Local storm report, Nov 16, 2:28 AM CST, 3 hours 2 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
225 AM CST MON NOV 16 1987
TIME EVENT
BETWEEN POSSIBLE TORNADO TOUCHDOWN OR STRONG THUNDERSTORM WINDS
2 AM AND TOOK ROOF OFF STORE IN INGRAM TEXAS. INGRAM LOCATED JUST
205 AM CST NORTHEAST OF KERRVILLE ON IH 10. REPORT RECEIVED FROM
KERR COUNTY SHERIFF DEPARTMENT.Special weather statement, Nov 16, 4:02 AM CST, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 402 AM CST MON NOV 16 1987 ...VAL VERDE COUNTY IS NO LONGER INCLUDED IN THE TORNADO WATCH AREA ISSUED EARLIER THIS MONDAY MORNING... AT 355 AM RADAR INDICATED ALL PRECIPITATION HAD MOVED EAST OF VAL VERDE COUNTY. RAINSHOWERS WERE DEVELOPING JUST WEST OF DEL RIO TO 35 MILES SOUTH IN OLD MEXICO. SEVERE THUNDERSTORMS ARE NOT EXPECTED TO REDEVELOP IN THE VAL VERDE COUNTY AREA. THE NATION@AL WEATHER SERVICE OFFICE AT THE DEL RIO INTERNATIONAL AIRPORT RECIEVED ONLY .02 INCH OF RAIN AND WIND GUSTS TO 32 MPH DURING THE THUNDERSTORM THAT PASSED THROUGH THE DEL RIO AREA AROUND MID-NIGHT.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 15, 10:25 PM CST | Severe Thunderstorm Warning | EWX | Calhoun | 50 min |
| Nov 16, 1:08 AM CST | Severe Thunderstorm Warning | EWX | Maverick | 67 min |
| Nov 16, 1:21 AM CST | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Real | 69 min |
| Nov 16, 2:05 AM CST | Severe Thunderstorm Warning | EWX | Gillespie | 55 min |
| Nov 16, 2:31 AM CST | Severe Thunderstorm Warning | EWX | Bandera, Uvalde | 59 min |
| Nov 16, 2:56 AM CST | Severe Thunderstorm Warning | EWX | Burnet, Llano | 64 min |
| Nov 16, 2:58 AM CST | Severe Thunderstorm Warning | EWX | Medina | 62 min |
| Nov 16, 2:58 AM CST | Severe Thunderstorm Warning | EWX | Kendall | 62 min |
| Nov 16, 3:20 AM CST | Severe Thunderstorm Warning | EWX | McMullen | 55 min |
| Nov 16, 3:34 AM CST | Severe Thunderstorm Warning | EWX | Bexar | 56 min |
| Nov 16, 3:38 AM CST | Severe Thunderstorm Warning | EWX | Frio | 67 min |
| Nov 16, 3:55 AM CST | Tornado Warning | EWX | Bexar | 65 min |
| Nov 16, 5:04 AM CST | Severe Thunderstorm Warning | EWX | Karnes | 56 min |
| Nov 16, 7:04 AM CST | Severe Thunderstorm Warning | EWX | Victoria | 56 min |
| Nov 16, 7:36 AM CST | Tornado Warning | EWX | Jackson | 54 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.