Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 30, NWS Austin/San Antonio, TX

May 2, 1990Gillespie County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 2, 1990, 11:18 PM CDT for Gillespie County, Texas. It was in force for 57 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
May 2, 1990, 11:18 PM CDT (04:18 UTC)
Expired
May 3, 1990, 12:15 AM CDT
In force
57 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Gillespie 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

TimeReportWhereRemark
May 2, 11:20 PM CDTHail 1Gillespie, 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

Del Rio, TX (KDRT), launched 00:00Z, 4.3 hours before the alert went out and 211 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.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 1990-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 1990-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
833 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KAUS 030419
SVRAUS
TXC171-030515-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
1118 PM CDT WED MAY 2 1990
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1215 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH CENTRAL TEXAS
          ...GILLESPIE
 
AT 1115 PM RADAR SHOWED A POSSIBLE SEVERE THUNDERSTORMS IN THE
SOUTHWESTERN PART OF GILLESPIE COUNTY. MOVING NORTHEAST AT 15 MPH.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGIN^G WEATHER CONDITIONS.

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 2, 5:44 PM CDT, 5 hours 34 minutes before
TXZ030-034>037-030030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
540 PM CDT WED MAY 2 1990

...A FLASH FLOOD WATCH FOR TRAVIS AND ALL SURROUNDING COUNTIES TONIGHT
   EXCLUDING FAYETTE AND BURLESON COUNTIES ...

AROUND 530 PM RADAR SHOWED SCATTERED SHOWERS THROUGHTOUT CENTRAL
TEXAS. THE AREA OF COVERAGE IS INCREASING BUT RAINFALL REAMIN LIGHT.
MOVEMENT OF THE SHOWERS IS TO THE NORTH AT 25 MPH.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP LATER THIS EVENING
AND TONIGHT PRODUCING HEAAVY RAIN AND FLASH FLOODING.

PERSONS IN THE WATCH AREA ARE URGED TO MONITOR WEATHER DEVELOPMENTS AND BE
PREPARED TO TAKE ACTION SHOULD FLOODING BE OBSERVED OR A FLASH FLOOD
WARNING ISSUED.

MOTORISTS TRAVELING IN THE WATCH AREA SHOULD LOOK OUT FOR FLOODED ROADWAYS.
Special weather statement, May 2, 10:32 PM CDT, 46 minutes before
TXZ030-034>037-030500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1030 PM CDT WED MAY 2 1990

...TORNADO WATCH FOR TRAVIS AND ALL SURROUNDING COUNTIES UNTIL 4 AM CDT....

...A FLASH FLOOD WATCH FOR TRAVIS AND ALL SURROUNDING COUNTIES THOUGH
   TONIGHT EXCLUDING FAYETTE AND BURLESON COUNTIES ...

AT 1020 PM RADAR SHOWED A LARGE LINE OF SHOWERS AND THUNDERSTORMS
SOME WITH HEAVY RAIN FROM DEL RIO NORTHEAST TO THE DALLAS FORT WORTH AREA.
THE STRONGER THUNDERSORMS WERE LOCATED SOUTH OF JUNCTION...WEST OF
FREDERICKSBURGH...AND WEST OF LLANO. MOVEMENT OF THE INDIVIDUAL STORMS
IS TO THE NORTH WHILE THE LINE IS SLOWLY MOVING EAST.

THESE STORMS ARE PRESENTLY MOVING INTO GILLESPIE...LLANO...SAN SABA AND
MILLS COUNTIES. THESE STORMS COULD PRODUCE VERY HEAVY RAIN...STRONG GUSTY
WINDS...HAIL AND ISOLATED TORNADOES.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 2, 9:14 PM CDTFlash Flood WarningEWXEdwards2 hr
May 2, 10:25 PM CDTFlash Flood WarningEWXEdwards, Real3 hr
May 2, 10:30 PM CDTSevere Thunderstorm WarningEWXKerr60 min
May 2, 11:13 PM CDTSevere Thunderstorm WarningEWXReal47 min
May 2, 11:26 PM CDTSevere Thunderstorm WarningEWXBandera64 min
May 3, 12:07 AM CDTFlash Flood WarningEWXGillespie3 hr
May 3, 12:12 AM CDTFlash Flood WarningEWXBandera, Kerr4 hr
May 3, 1:38 AM CDTFlash Flood WarningEWXEdwards, Real3 hr
May 3, 3:35 AM CDTFlash Flood WarningEWXGillespie115 min
May 3, 4:09 AM CDTFlash Flood WarningEWXBandera, Edwards, Kerr, Real6 hr
May 3, 4:09 AM CDTFlash Flood WarningEWXKendall6 hr
May 3, 5:04 AM CDTFlash Flood WarningEWXBlanco3 hr
May 3, 5:25 AM CDTFlash Flood WarningEWXGillespie3 hr

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.