Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 17, NWS Austin/San Antonio, TX

February 5, 1998Comal County, Hays County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 5, 1998, 5:02 PM CST for Comal County, Hays County, Texas. It was in force for 58 min. 3 reports 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 5, 1998, 5:02 PM CST (23:02 UTC)
Expired: Feb 5, 1998, 6:00 PM CST
In force: 58 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

Counties Comal County, TX, Hays County, TX

The radar

The Austin/San Antonio radar (KEWX), 28 km from the middle of the area, began a volume at 23:05 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where
Feb 5, 5:35 PM CST	Hail 0.75	Fischer, TX
Feb 5, 5:45 PM CST	Hail 0.75	Canyon Res, TX
Feb 5, 6:07 PM CST	Hail 0.75	Sattler, 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.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 11.0 hours before the alert went out and 257 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 44 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 965 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 213 m²/s²
0-3 km storm-relative helicity: 282 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

678 
WUUS1 KSAT 052304 RRA
SVRSAT
TXC091-209-060000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
502 PM CST THU FEB 5 1998
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...COMAL COUNTY...HAYS COUNTY
 
AT 500 PM CST...DOPPLER RADAR INDICATED A SEVER THUNDERSTORM JUST EAST
OF BLANCO MOVING SOUTHEAST AT 25 MPH. THIS STORM WILL MOVE ALONG THE HAYAND COMAL COUNTY LINE PASSING NEAR FISCHER...WIMBERLY...SAN MARCOS
AND SATTLER.
 
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY
OF LARGE HAIL AND DAMAGING WINDS.  FREQUENT LIGHTNING AND LOCALLY
HEAVY RAIN CAN ALSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL
STREAMS...LOW AREAS...AND LOW WATER CROSSINGS.
 
IF YOU SEE SEVERE WEATHER TAKING PLACE...CALL YOUR REPORT TO
THE NEAREST LAW ENFORCEMENT AGENCY FOR IMMEDIATE RELAY TO THE
NATIONAL WEATHER SERVICE.

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

Local storm report, Feb 5, 4:10 PM CST, 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
410 PM CST THU FEB 5 1998

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0352 PM    SAN ANTONIO               TX   .75 INCH HAIL
02/05/98   BEXAR                          WX SERVICE METEOROLOGIST
                                          LOOP 1604 AND JUDSON RD

Local storm report, Feb 5, 4:10 PM CST, 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
410 PM CST THU FEB 5 1998

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0352 PM    SAN ANTONIO               TX   .75 INCH HAIL
02/05/98   BEXAR                          WX SERVICE METEOROLOGIST
                                          LOOP 1604 AND JUDSON RD

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 5, 3:39 PM CST	Severe Thunderstorm Warning	EWX	Bexar	66 min
Feb 5, 4:50 PM CST	Severe Thunderstorm Warning	EWX	Blanco	40 min
Feb 5, 5:13 PM CST	Severe Thunderstorm Warning	EWX	Bexar	62 min
Feb 5, 5:57 PM CST	Severe Thunderstorm Warning	EWX	Comal	63 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998 Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.