Tornado Watch 277

Issued

May 12, 2000, 6:15 PM CDT (23:15 UTC)

Expired

May 12, 2000, 10:00 PM CDT

In force

4 hr

Issued by

the Storm Prediction Center

300 
WWUS9 KMKC 122255
SEL7  

SEL7  
MKC WW 122248
TXZ000-130300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 277
STORM PREDICTION CENTER NORMAN OK
548 PM CDT FRI MAY 12 2000

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   CENTRAL AND NORTHEAST TEXAS                              

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 615 PM UNTIL 1000
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES EAST AND WEST
OF A LINE FROM 80 MILES SOUTHWEST OF TEMPLE TEXAS TO 30 MILES EAST
NORTHEAST OF PARIS TEXAS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 276.  WATCH NUMBER 276 WILL NOT BE IN
EFFECT AFTER 615 PM CDT.  CONTINUE...WW 271...WW 272...WW 273...WW
274...WW 275...

DISCUSSION...SUPERCELL STORMS HAVE DEVELOPED OVER TX AND HAVE
PRODUCED TORNADOES DURING THE PAST HOUR. IT APPEARS THAT EXTREME
INSTABILITY AND LOCALIZED ENHANCED LOW LEVEL SHEAR INVOF COLD FRONT
MAY SUPPORT ADDITIONAL TORNADO DEVELOPMENT UNTIL SHORTLY AFTER
SUNSET.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 33015.


...VESCIO

334,0934 301,0971 301,0993 334,0961

Tornado Watches in Texas, 2000Tornado Watches in Arkansas, 2000Every tornado watch in 2000

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.