Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 89, NWS Austin/San Antonio, TX

May 28, 2002Kendall County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 28, 2002, 1:21 AM CDT for Kendall County, Texas. It was in force for 54 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 28, 2002, 1:21 AM CDT (06:21 UTC)
Expired: May 28, 2002, 2:15 AM CDT
In force: 54 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Kendall County, TX

The radar

The Austin/San Antonio radar (KEWX), 76 km from the middle of the area, began a volume at 06:24 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	Remark
May 28, 1:30 AM CDT	Thunderstorm Wind	Boerne, TX	Widespread damage was reported to trees northwest of Boerne. Numerous large limbs were knocked to the ground.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 27, 11:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.4 hours before the alert went out and 212 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: 3101 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 1249 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KEWX 280621
SVRSAT
TXC259-280715-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
121 AM CDT TUE MAY 28 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  KENDALL

* UNTIL 215 AM CDT

* AT 121 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHWEST OF BOERNE...MOVING SOUTHEAST 
AT 35 MPH.  THIS STORM LIKELY WILL PRODUCE HAIL TO THE SIZE TO 
GOLFBALLS AND DAMAGING WIND GUSTS.


LAT...LON 3012 9891 2979 9891 2975 9875 2994 9844
          3012 9861

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 8:01 PM CDT	Severe Thunderstorm Warning	EWX	Burnet	59 min
May 27, 9:03 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	57 min
May 27, 9:52 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	53 min
May 27, 11:35 PM CDT	Severe Thunderstorm Warning	EWX	Kerr	55 min
May 28, 1:16 AM CDT	Severe Thunderstorm Warning	EWX	Medina	59 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every severe thunderstorm warning in 2002

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.