Tornado Watch 159

Issued

Apr 7, 2000, 1:15 PM CDT (18:15 UTC)

Expired

Apr 7, 2000, 8:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

000 
WWUS9 KMKC 071833
MKC WW 071749

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 159
STORM PREDICTION CENTER NORMAN OK
149 PM EDT FRI APR 7 2000

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

   SOUTHERN ILLINOIS                           
   SOUTHERN INDIANA                            
   NORTHERN AND WESTERN KENTUCKY                           
   SOUTHWESTERN OHIO                               

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 215 PM UNTIL 900
PM EDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 15 MILES SOUTH SOUTHWEST OF CARBONDALE
ILLINOIS TO 25 MILES EAST SOUTHEAST OF CINCINNATI OHIO.

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.


DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INCREASE DURING THE
AFTERNOON AS UPPER TROUGH APPROACHES THE AREA. ALTHOUGH AIR MASS IS
ONLY MARGINALLY UNSTABLE...DEEP LAYER SHEAR WILL SUPPORT SEVERE
THUNDERSTORMS...INCLUDING ISOLATED SUPERCELLS.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AUND ALOFT TO 1 INCH  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 26040.


...VESCIO

;375,0835 363,0892 383,0892 395,0835;

Tornado Watches in Kentucky, 2000Tornado Watches in Indiana, 2000Tornado Watches in Illinois, 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.