Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 18, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 19, 1990, 1:13 AM CDT for Medina County, Texas. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Apr 19, 1990, 1:13 AM CDT (06:13 UTC)
- Expired
- Apr 19, 1990, 2:15 AM CDT
- In force
- 62 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, 6.2 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 628 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 284 m²/s²
- 0-3 km storm-relative helicity
- 486 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 190616
SVRSAT
TXC325-190715-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
113 AM CDT THU APR 19 1990
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 215 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...MEDINA
NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM MOVING
FROM ZAVALA COUNTY NORTHEAST INTO MEDINA. THIS STORM IS MOVING TOWARD
THE CITY OF HONDO AT 30 MPH.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT LIGHTNING AND VERY HEAVY
RAIN.
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.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, Apr 18, 9:26 PM CDT, 3 hours 47 minutes before
TXZ034-035-036-038-039-041-054-190400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 925 PM CDT WED APR 18 1990 AT 915 PM CDT HONDO RADAR INDICATED THUNDERSTORMS IN MEXICO SOUTH OF DEL RIO. THE STRONGEST THUNDERSTORM WAS ABOUT 25 MILES SOUTHWEST OF EAGLE PASS MOVING TO THE NORTHEAST AT 15 TO 20 MILES AN HOUR. THIS WOULD PUT THE THUNDERSTORM IN THE EAGLE PASS AREA IN ABOUT AN HOUR. FREQUENT LIGHTNING...GUSTY WINDS...LOCALLY HEAVY RAINFALL AND POSSIBLE HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS. CONDITIONS ARE FAVORABLE FOR THUNDERSTORMS TO CONTINUE TO DEVELOP OVER MEXICO...SOUTH CENTRAL TEXAS AND THE TEXAS HILL COUNTRY FOR THE REMAINDER OF TONIGHT.
Special weather statement, Apr 18, 11:06 PM CDT, 2 hours 7 minutes before
TXZ034-035-036-038-039-041-054-190400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 1100 PM CDT WED APR 18 1990 AT 1045 PM CDT HONDO RADAR INDICATED THUNDERSTORMS IN MEXICO SOUTH OF DEL RIO AND SOUTHWEST OF EAGLE PASS. THE STRONGEST THUNDERSTORMS WERE 25 AND 35 MILES SOUTHWEST OF EAGLE PASS MOVING TO THE NORTHEAST AT 15 TO 25 MPH. THESE THUNDERSTORMS SHOULD PASS NEAR EAGLE PASS DURING THE NEXT HOUR. DEVELOPING THUNDERSTORMS IN MEXICO SHOULD COUNTINUE TO MOVE ACROSS THE RIO GRANDE RIVER THROUGHOUT THE REMAINDER OF TONIGHT. FREQUENT LIGHTNING...GUSTY WINDS...LOCALLY HEAVY RAINFALL AND POSSIBLE HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS. CONDITIONS ARE FAVORABLE FO R THUNDERSTORMS TO CONTINUE TO DEVELOP OVER MEXICO...SOUTH CENTRAL TEXAS AND THE TEXAS HILL COUNTRY FOR THE REMAINDER OF TONIGHT.
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.