Alert archive / Texas / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 433

June 16, 200223 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 16, 2002, 1:30 AM CDT for 23 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jun 16, 2002, 1:30 AM CDT (06:30 UTC)
Expired: Jun 16, 2002, 7:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 23 counties

Blanco County, TX, Brown County, TX, Burnet County, TX, Callahan County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Erath County, TX, Hamilton County, TX, Haskell County, TX, Hays County, TX, Jones County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Mills County, TX, Runnels County, TX, San Saba County, TX, Shackelford County, TX, Stonewall County, TX, Taylor County, TX

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 16, 1:39 AM CDT	Severe Thunderstorm Warning	SJT	Taylor	66 min
Jun 16, 1:57 AM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano, Williamson	78 min
Jun 16, 2:35 AM CDT	Severe Thunderstorm Warning	SJT	Coleman, Runnels	55 min
Jun 16, 2:50 AM CDT	Severe Thunderstorm Warning	SJT	McCulloch	55 min

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 6.5 hours before the alert went out and 214 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2256 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 160637
SEL3  
SPC WW 160631
TXZ000-161100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 433
STORM PREDICTION CENTER NORMAN OK
131 AM CDT SUN JUN 16 2002

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   CENTRAL TEXAS                              

EFFECTIVE THIS SUNDAY MORNING FROM 130 AM UNTIL 600 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF ABILENE TEXAS TO 90
MILES SOUTHEAST OF BROWNWOOD TEXAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.  SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 431.  WATCH NUMBER 431 WILL NOT BE
IN EFFECT AFTER 130 AM CDT.  CONTINUE...WW 432...

DISCUSSION...UPWIND DEVELOPMENT OF STORMS WILL CONTINUE ON WRN
FLANK OF N CNTRL TX MCS.  A GRADUALLY DIMINISHING THREAT FOR LARGE
HAIL WILL EXIST WITH THESE STORMS.  IN ERN PART OF WW...DOWNWIND
MCS PROPAGATION LIKELY TO PERSIST...WITH A THREAT FOR DAMAGING
WINDS SPREADING SSE INTO ERN PART OF THE TX HILL COUNTRY. 

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 33035.

...CORFIDI

333,1002 320,0975 294,0975 311,1002

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 7:30 PM CDT	Severe Thunderstorm Watch	SPC	Archer, Armstrong, Baylor, Briscoe, Childress, Clay and 18 more	6 hr
Jun 15, 10:30 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Callahan, Coleman, Comanche, Eastland, Erath and 15 more	5 hr
Jun 16, 1:30 AM CDT	Severe Thunderstorm Watch	SPC	Bell, Coryell, Falls, Freestone, Hill, Kaufman and 7 more	5 hr
Jun 16, 3:30 AM CDT	Severe Thunderstorm Watch	SPC	Angelina, Austin, Bastrop, Brazoria, Brazos, Burleson and 38 more	5 hr

Nearby

Severe Thunderstorm Watches in Texas, 2002 Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive.