National Weather Service Raw Text Product

000 
WWUS20 KWNS 301851
SEL5  
SPC WW 301842
MIZ000-MNZ000-WIZ000-LMZ000-LSZ000-310100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 355
STORM PREDICTION CENTER NORMAN OK
142 PM CDT THU MAY 30 2002

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

   UPPER MICHIGAN                           
   THE MINNESOTA ARROWHEAD                         
   NORTHERN AND EASTERN WISCONSIN                          
   WESTERN LAKE MICHIGAN                      
   WESTERN ADN SOUTHERN LAKE SUPERIOR                      

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 800
PM CDT.

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

THE TORNADO WATCH AREA IS ALONG AND 105 STATUTE MILES EITHER SIDE
OF A LINE FROM 45 MILES NORTH OF DULUTH MINNESOTA TO 55 MILES SOUTH
SOUTHEAST OF ESCANABA MICHIGAN.

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...SUPERCELLS/SUPERCELL CLUSTERS EXPECTED TO DEVELOP
INVOF SURFACE TRIPLE POINT AND CONVECTIVE OUTFLOW BOUNDARIES IN WW
AREA LATER THIS AFTERNOON AS SURFACE HEATING CONTINUES TO 
DESTABILIZE REGION.  WNWLY UPPER FLOW WILL STRENGTHEN WITH TIME...
INCREASING DEEP SHEAR AND CONTINUING TO ADVECT STEEP MID LEVEL
LAPSE RATES ACROSS REGION.  TORNADO POTENTIAL SHOULD BE GREATEST
OVER NRN/ERN WI AND WRN UPR MI...ESPECIALLY INVOF ANY NW-SE
ORIENTED OUTFLOW BOUNDARIES. 

AVIATION...TORNADOES AND 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 29030.

...CORFIDI

433,0873 460,0930 485,0911 462,0854