Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 11, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 27, 1987, 9:55 PM CST for Jackson County, Texas. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Feb 27, 1987, 9:55 PM CST (03:55 UTC)
- Expired
- Feb 27, 1987, 10:55 PM CST
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Jackson 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, 3.9 hours before the alert went out and 33 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
- 878 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- -0.0
- 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, Feb 27, 6:01 PM CST, 3 hours 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 559 PM CST FRI FEB 27 1987 ...A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 615 PM THIS EVENING FOR REAL COUNTY... ...A TORNADO WATCH IS IN EFFECT TONIGHT FOR MUCH OF THE HILL COUNTRY AND ADJACENT PORTIONS OF SOUTH CENTRAL TEXAS... A LINE OF THUNDERSTORMS...CONTAINING VERY HEAVY RAIN...AND THE POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS...WAS MOVING EASTWARD AT NEAR 30 MILES AN HOUR FROM THE TEXAS HILL COUNTRY AT 555 PM. THE LINE STRETCHED FROM NORTHERN MEXICO TO NEAR CRYSTAL CITY TO NEAR LEAKEY. RADAR HAD INDICATED POSSIBLE LARGE HAIL IN A PORTION OF THE LINE THAT WAS MOVING ACROSS REAL COUNTY ABOUT 530 PM THIS EVENING. SO FAR...ONLY SMALL HAIL...WINDS GUSTING TO NEAR 50 MPH AND VERY HEAVY RAIN HAS BEEN REPORTED IN THESE STORMS. THE PUBLIC IS REQUESTED TO CALL ANY REPORTS OF SEVERE WEATHER TO THE NEAREST LAW ENFORECEMENT AGENCY FOR RELAY TO ]THE NATIONAL WEATHER SERVICE.
Special weather statement, Feb 27, 6:16 PM CST, 3 hours 39 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 615PM CST FRI FEB 27 1987 ...TORNADO WATCH IN EFFECT UNTIL 11PM TONIGHT... AT 605 PM AUSTIN WEATHER RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS FROM JUST NORTH OF JUNCTION TO WEST OF FREDERICKSBURG AND KERRVILLE AND ON SOUTH TO NEAR COTULLA. THAT LINE WAS MOVING TOWARDS THE EAST AT NEAR 30 MPH. HAIL...MOSTLY SMALL...AND HIGH WINDS HAVE BEEN REPORTED WITH THESE STORMS AS THnEY MOVED INTO THE FAR WESTERN HILL COUNTRY. PERSONS IN CENTRAL TEXAS SHOULD KEEP ABREAST OF THE LATEST WEATHER INFORMATION AND LISTEN FOR POSSIBLE WARNINGS LATER THIS EVENING.
Special weather statement, Feb 27, 6:55 PM CST, 3 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 655 PM CST FRI FEB 27 1987 ...A TORNADO WATCH IS IN EFFECT TONIGHT FOR MUCH OF THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS UNTIL 1100 TONIGHT... A LINE OF THUNDERSTORMS WAS LOCATED BY WEATHER SERVICE RADAR FROM NEAR BOERNE TO THE WESTERN EDGE OF SAN ANTONIO TO NEAR LAREDO AT 700 PM THIS EVENING. THE LINE WAS MOVING EASTWARD AT NEAR 35 MILES AN HOUR. AT THE PRESENT MOVEMENT...THESE STORMS WILL BE IN THE SAN ANTONIO METROPLEX BY 730 PM THIS EVENING. SO FAR THIS LINE OF STORMS HAS NOT PRODUCED SEVERE WEATHER...ONLY VERY HEAVY RAIN AND VERY STRONG WEST WINDS. THE WINDS WERE ACTUALLY STRONGER AFTER THE STORM LINE HAD PASSES THAN WHILE THE STORMS WERE OCCURRING. GUSTS WERE REPORTED TO NEAR 50 MILES AN HOUR AT DEL RIO AS THE STORM SYSTEM PASSED. THESE STORMS HAVE THE POTENTIAL OF PRODUCING LARGE HAIL...DAMAGING WIND AND EVEN TORNADOES AS THEY CROSS SOUTH CENTRAL TEXAS TONIGHT. THE PUBLIC IS REQUESTED TO CALL ANY REPORTS OF SEVERE WEATHER TO THE NEAREST LAW ENFORECEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.
Special weather statement, Feb 27, 6:58 PM CST, 2 hours 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 655 PM CST FRI FEB 27 1987 ...INTENSE THUNDERSTORM OVER SOUTHERN LLANO COUNTY... AN INTENSE THUNDERSTORM OVER SOUTHERN LLANO COUNTY IS MOVING TOWARDS THE EAST AT NEAR 45 MPH. PERSONS IN SOUTHERN LLANO COUNTY AND PERSONS ON THE COLORADO RIVER BETWEEN MARBLE FALLS AND LAKE BUCHANAN SHOULD STAY ALERT FOR GUSTY WINDS TO NEAR 50 MPH...SMALL HAIL AND BRIEF HEAVY RAINS.
Special weather statement, Feb 27, 7:45 PM CST, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 745 PM CST FRI FEB 27 1987 ...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 815 PM THIS EVENING FOR ATASCOSA AND BEXAR COUNTIES... ...A TORNADO WATCH IS IN EFFECT TONIGHT FOR SOUTH CENTRAL TEXAS UNTIL 1100 PM TONIGHT... A LINE OF THUNDERSTORMS FROM NEAR LLANO TO BOERNE TO JUST WEST OF SAN ANTONIO TO NEAR COTULLA AT 740 PM CONTINUED TO MOVE EASTWARD AT NEAR 35 MILES AN HOUR. STORMS WITHIN THIS LINE HAVE THE POTENTIAL TO PRODUCE SEVERE WEATHER IN THE FORM OF DAMAGING WIND...LARGE HAIL AND PERHAPS EVEN A TORNADO AS THE SYSTEM MOVES EASTWARD INTO DEEPER MOISTURE. NUMEROUS REPORTS OF SMALL HAIL AND STRONG WIND HAVE BEEN RECEIVED FROM THE STORMS IN THIS LINE. AT 730 PM...HAM RADIO SPOTTERS IN BEXAR COUNTY REPORTED PEA SIZED HAIL AS THE STORM SYSTEM MOVED INTO THE SOUTHWEST CORNER OF BEXAR COUNTY. < THE PUBLIC IS REQUESTED TO CALL ANY REPORTS OF SEVERE WEATHaER TO THE NEAREST LAW ENFORECEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.
Special weather statement, Feb 27, 9:18 PM CST, 37 minutes before
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</html>The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 7:12 PM CST | Severe Thunderstorm Warning | EWX | Atascosa, Bexar | 63 min |
| Feb 27, 7:18 PM CST | Severe Thunderstorm Warning | EWX | Burnet, Llano | 57 min |
| Feb 27, 7:54 PM CST | Severe Thunderstorm Warning | EWX | Comal, Guadalupe | 66 min |
| Feb 27, 7:54 PM CST | Severe Thunderstorm Warning | EWX | Wilson | 66 min |
| Feb 27, 8:22 PM CST | Severe Thunderstorm Warning | EWX | Gonzales, Karnes | 53 min |
| Feb 27, 8:52 PM CST | Severe Thunderstorm Warning | EWX | DeWitt | 68 min |
| Feb 27, 9:25 PM CST | Severe Thunderstorm Warning | EWX | Lavaca, Victoria | 65 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.