Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 1, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 14, 1987, 11:19 PM CST for Williamson County, Texas. It was in force for 56 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
- Feb 14, 1987, 11:19 PM CST (05:19 UTC)
- Expired
- Feb 15, 1987, 12:15 AM CST
- In force
- 56 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Williamson 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 |
|---|---|---|---|
| Feb 14, 11:40 PM CST | Hail 0.75 | Williamson, 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
Stephenville/Cla, TX (KSEP), launched 00:00Z, 5.3 hours before the alert went out and 181 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
- 1627 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1092 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.8
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 14, 6:48 PM CST, 4 hours 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 640 PN CST SAT FEB 14 1987 A TORNADO WATCH US IN EFFECT UNTILL 11 PM FOR THE FOLLOWING COUNTIES OF NORTH CENTRAL TEXAS CLOSE TO THE AUSTIN AREA. LAMPASAS...MILLS... SAN SABA...LLANO...MILAM AND WILLIAMSOM. AUSTIN RADAR WAS INDICATING THUNDERSTORM ACTIVITY FROM NEAR PAINT ROCK TO NEAR BROWNWOOD TO GRANBURY MOVING TOWARDS THE NORTHEAST.. THIS IS STILL NEAR 100 MILES NORTHWEST OF AUSTIN. OTHER LIGHT SHOWERS WERE INDICATED IN THE WACO AREA. STAY TUNED TO YOUR LOCAL NOAA WEATHER RADIO...TV OR RADIO STATION FOR FURTHER INFORMATION. REMEMBER A TORNADO WATCH MEANS THAT THE THREAT OF TORNADOES EXIST IN AND CLOSE TO THE WATCH AREA. NO SEVERE WEATHER HAS BEEN REPORTED TO THE AUSTIN WEATHER SERVICE WITHIN THE HOUR.
Special weather statement, Feb 14, 8:03 PM CST, 3 hours 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
8 PM CST SAT FEB 14 1987
A TORNADO WATCH US IN EFFECT UNTILL 11 PM FOR THE FOLLOWING COUNTIES
OF NORTH CENTRAL TEXAS CLOSE TO THE AUSTIN AREA. LAMPASAS...MILLS...
SAN SABA...LLANO...MILAM AND WILLIAMSOM.
AUSTIN RADAR WAS INDICATING AN AREA OF SHOWERS AND THUNDERSTORMS FROM
NEAR LEAKEY TO JUNCTION TO BROWNWOOD TO STEPHENVILLE. MOVEMENT WAS
OF THE AREA WAS TOWARDS THE SOUTHEAST WITH THE THUNDERSTORMS MOVIMG
TOWARDS THE NORTHEAST. MOST INTENSE THUNDERSTORMS WERE LOCATED 100 TO
130 MILES NORTHWEST OF AUSTIN.
STAY TUNED TO YOUR LOCAL NOAA WEATHER RADIO...TV OR RADIO STATION
FOR FURTHER INFORMATION. REMEMBER A TORNADO WATCH MEANS TH0AT THE THREAT
OF TORNADOES EXIST IN AND CLOSE TO THE WATCH AREA.
NO SEVERE WEATHER HAS BEEN REPORTED TO THE AUSTIN WEATHER SERVICE
WITHIN THE PAST HOUR. {{Special weather statement, Feb 14, 9:20 PM CST, 1 hour 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 915 PM CST SAT FEB 14 1987 A TORNADO WATCH US IN EFFECT UNTILL 11 PM FOR THE FOLLOWING COUNTIES OF NORTH CENTRAL TEXAS CLOSE TO THE AUSTIN AREA. LAMPASAS...MILLS... SAN SABA...LLANO...MILAM AND WILLIAMSOM. AUSTIN RADAR INDICATES A LARGE AREA OF MOSTLY SHOWERS MIXED WITH A FEW THUNDERSTORMS FROM SAN ANTONIO TO JOHNSON CITY TO LAKE BUCHANAN TO WEST OF WACO WITH MOVEMENT TOWARDS THE EAST. STRONG THUNDERSTORMS WERE LOCATED NEAR MASON AND NORTH OF WACO. STAY TUNED TO YOUR LOCAL NOAA WEATHER RADIO...TV OR RADIO STATION FOR FURTHER INFORMATION. REMEMBER A TORNADO WATCH MEANS THAT THE THREAT OF TORNADOES EXIST IN AND CLOSE TO THE WATCH AREA. NO SEVERE WEATHER HAS BEEN REPORTED TO THE AUSTIN WEATHER SERVICE WITHIN THE PAST HOUR.
Special weather statement, Feb 14, 10:14 PM CST, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 10 PM CST SAT FEB 14 1987 A TORNADO WATCH NUMBER 06 ISSUED EARLIER FOR LAMPASAS..MILLS... SAN SABA...LLANO...MILAM AND WILLIAMSON COUNTIES IS NO LONGER IN EFFECT. TORNADO WATCH NUMBER 07 IS NOW IN EFFECT UNTILL 4 AM SUNDAY FOR THE FOLLOWING COUNTIES. CALDWELL...LEE..WILLIAMSOM...BASTROP...MILAM... FAYETTE...AND BURLESON. SHOWERS AMD THUNDERSTORMS SOME HEAVY WEST OF SAN ANTONIO CONTINUE TO DEVELOPE NORTH THROUGH WEST THROUGH SOUTHWEST OF AUSTIN MOVING EASTWARD. STAY TUNED TO YOUR LOCAL NOAA WEATHER RADIO...TV OR RADIO STATION FOR FURTHER INFORMATION. REMEMBER A TORNADO WATCH MEANS THAT THE THREAT OF TORNADOES EXIST IN AND CLOSE TO THE WATCH AREA. NO SEVERE WEATHER HAS BEEN REPORTED TO THE AUSTIN WEATHER SERVICE WITHIN THE PAST HOUR.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 12:07 AM CST | Severe Thunderstorm Warning | EWX | Caldwell | 68 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.