Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 33, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 11, 1990, 8:40 PM CDT for Webb County, Texas. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- May 11, 1990, 8:40 PM CDT (01:40 UTC)
- Expired
- May 11, 1990, 9:15 PM CDT
- In force
- 35 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Webb 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
Corpus Christi, TX (KCRP), launched 00:00Z, 1.7 hours before the alert went out and 196 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
- 1737 J/kg
- Mixed-layer CIN
- -296 J/kg
- Mixed-layer LCL
- 668 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 120141
SVRSAT
TXC479-120215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
840 PM CDT FRI MAY 11 1990
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...NORTHERN WEBB
AT 840 PM NATIONAL WEATHER SERVICE RADAR INDICATED A POSSIBLE SEVERE
THUNDERSTORM CROSSING THE RIO GRANDE RIVER ENTERING NORTHERN WEBB
COUNTY. THE MAJOR THREAT FROM THIS STORM WILL BE STRONG SURFACE WINDS.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT LIGHTNING AND VERY HEAVY
RAIN.
WHEN A THUNDERSTORM THREATENS...SEEK SHELTER INSIDE A HOME OR
BUILDING AWAY FROM DOORS AND WINDOWS. REFRAIN FROM USING ELECTRICAL
APPLIANCES.
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORT0S TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.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 11, 7:05 PM CDT, 1 hour 35 minutes before
TXZ030-036-120130 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 650 PM CDT FRI MAY 11 1990 ...TORNADO WATCH IN EFFECT FOR SAN SABA...MILLS...LLANO AND LAMPASAS COUNTIES UNTIL 10 PM. AT 640 PM...RADAR SHOWED A LINE OF SHOWERS AND THUNDERSTORMS FROM NEAR LUFKIN SOUTHWEST THROUGH COLLEGE STATION ON INTO THE COASTAL PLAINS. THE LINE WAS MOVING EAST NORTHEAST AT NEAR 30 MPH. THE STRONGER STORMS WERE LOCATED NEAR SOMERVILLE AND SCHULENBURG. THESE SHOWERS AND THUNDERSTORMS AND HAVE BEEN DISSIPATING IN THE LAST HOUR HOWEVER...THUNDERSTORMS HAVE BEEN DEVELOPING RAPIDLY OUT TO THE WEST FROM NEAR SAN ANGELO TO ABILENE STILL BRINGING THE THREAT OF SEVERE WEATHER. PERSONS IN THE WAJTCH AREA SHOULD STAY TUNED TO NOAA WEATHER RADIO, PUBLIC RADIO AND TV FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, May 11, 7:14 PM CDT, 1 hour 26 minutes before
TXC465-120215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 714 PM CDT FRI MAY 11 1990 AT 710 PM CDT A THUNDERSTORM WITH HEAVY RAIN...STRONG WINDS AND POSSIBLE HAIL WAS ABOUT 8 MILES NORTHEAST OF COMSTOCK MOVING NORTHEAST TOWARD THE ROUGH CAYNON AREA OF LAKE AMISTAD AT 25 MPH. THIS THUNDERSTORM HAS INTENSIFIED DURING THE PAST HALF HOUR. OTHER THUNDERSTORMS WERE 50 MILES WEST OF DEL RIO TO 50 MILES WEST. BOATERS ON LAKE AMIST\AD AND AREA RIVERS IN THE PATH OF THIS THUNDERSTORM SHOULD BE PREPARE TO MOVE TO SAFETY IN A HURRY IF ANY SEVERE WEATHER DEVELOPES. NNNN
Special weather statement, May 11, 7:42 PM CDT, 58 minutes before
TXC465-120245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 742 PM CDT FRI MAY 11 1990 AT 740 PM CDT THUNDERSTORMS WERE IN AND NEAR VAL VERDE COUNTY. THE STRONGEST THUNDERSTORM WITH HEAVY RAIN...HIGH WINDS AND POSSIBLE HAIL HAS MOVED NORTHEAST INTO EDWARDS COUNTY. OTHER DEVELOPING THUNDERSTORMS WERE LOCATED FROM 30 NORTHWEST TO 50 MILES WEST OF DEL RIO AND WAS MOVING TO THE NORTHEAST AT 30 MPH. THESE STORMS TOO HAVE INTENSIFIED DURING THE PAST HOUR. PERSONS NEAR LANGTRY...COMSTOCK AND BOATERS AND FISHERMEN ON THE LAKE AND AREA RIVERS SHOULD MONITOR THESE STORMS CLOSELY IN CASE THEY BECOME SEVERE. NNNN
Special weather statement, May 11, 7:55 PM CDT, 45 minutes before
TXZ034-035-054-120300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO, TX 755 PM CDT FRI MAY 11 1990 ...TORNADO WATCH IN EFFECT UNTIL 10 PM CDT FOR A PORTION OF THE TEXAS HILL COUNTRY... STRONG THUNDERSTORMS WERE OCCURRING THIS EVENING OVER PORTIONS OF THE TEXAS HILL COUNTRY AND EDWARDS PLATEAU. AT 750 PM CDT...THE STRONGEST STORM WAS LOCATED NEAR SONORA WITH ANOTHER DEVELOPING IN SOUTHERN EDWARDS COUNTY. THE THUNDERSTORMS WERE MOVING RAPIDLY EAST AT 35 MILES AN HOUR. RESIDENTS IN THE PATH OF THESE STORMS CAN EXPECT BRIEF HEAVY RAIN... FREQUENT LIGHTNING...STRONG GUSTY SURFACE WIND AND POSSIBLE HAIL. THE AIR MASS OVER THE REGION REMAINS MOIST AND EXTREMELY UNSTABLE WITH CONDITIONS QUITE FAVORABLE FOR A FEW OF THESE STORMS TO BECOME SEVERE. RESIDENTS ACROSS THE HILL COUNTRY AND EDWARDS PLATEAU SHOULD CLOSELY MONITOR WEATHER CONDITIONS AND BE PREPARED TO TAKE IMMEDIATE ACTION SHOULD THREATENING WEATHER APPROACH OR A WARNING BE ISSUED. STAY TUNED TO NOAA WEATHER RADIO...YOUR BEST SOURCE OF UP-TO-DATE INFORMATION.
Special weather statement, May 11, 8:03 PM CDT, 37 minutes before
TXZ030-036-120200 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 800 PM CDT FRI MAY 11 1990 ...TORNADO WATCH IN EFFECT FOR SAN SABA...MILLS...LLANO AND LAMPASAS COUNTIES UNTIL 10 PM. AT 745 PM...RADAR SHOWED A LINE OF SHOWERS WITH A FEW EMBEDDED THUNDER- STORMS FROM LUFKIN SOUTHWEST THROUGH BELLVILLE ON INTO THE COASTAL PLAINS. THE LINE WAS MOVING EAST NORTHEAST AT NEAR 30 MPH. THESE SHOWERS AND THUNDERSTORMS AND HAVE BEEN DISSIPATING IN THE LAST HOUR HOWEVER...VERY STRONG THUNDERSTORMS HAVE DEVELOPED EAST OF ABILENE TO ABOUT 60 MILES SOUTH OF SAN ANGELO. SOME OF THESE THUNDERSTORMS HAVE BEEN SEVERE AND ARE MOVING RAPIDLY TO THE EAST AT NEAR 30 MPH. STAY TUNED TO NOOA WEATHER AND LOCAL RADIO AND TV FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, May 11, 8:27 PM CDT, 13 minutes before
TXZ038-041-120300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO, TX 825 PM CDT FRI MAY 11 1990 AT 820 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A STRONG THUNDERSTORM APPROACHING THE RIO GRANDE RIVER FROM MEXICO. THE STORM WAS MOVING EAST AT 35 MILES AN HOUR AND SHOULD MOVE INTO TEXAS NEAR THE INTERSECTION OF WEBB AND MAVERICK COUNTIES WITHIN THE NEXT HALF HOUR. THIS STORM WILL LIKELY PRODUCE BRIEF HEAVY RAIN...FREQUENT LIGHTNING... STRONG GUSTY WIND AND POSSIBLE HAIL AS IT PROGRESSES EASTWARD. RESIDENTS IN THE PATH OF THIS STORM SHOULD MONITOR NOAA WEATHER RADIO FOR FURTHER UPDATES.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 8:30 PM CDT | Severe Thunderstorm Warning | EWX | Llano, San Saba | 60 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990
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.