National Weather Service Raw Text Product

000 
WWUS20 KWNS 041749
SEL3  
SPC WW 041745
IAZ000-KSZ000-MOZ000-NEZ000-050000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 233 
NWS STORM PREDICTION CENTER NORMAN OK 
1245 PM CDT SUN MAY 4 2003

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

       SOUTHWEST IOWA
       FAR NORTHEAST KANSAS
       NORTHWEST MISSOURI
       FAR EAST CENTRAL NEBRASKA

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL 700
PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 55 STATUTE MILES EAST AND WEST
OF A LINE FROM 15 MILES NORTHEAST OF OMAHA NEBRASKA TO 45 MILES
SOUTH SOUTHWEST OF KNOB NOSTER MISSOURI.

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...CONTINUE...WW 231...WW 232...


DISCUSSION...LINE OF TCU/SMALL CBS HAS DEVELOPED FROM SERN NEB INTO
NERN KS ... EAST OF SURFACE LOW AND AHEAD OF SEVERE CONVECTION/BOW
ECHO NOW DEVELOPING OVER S-CENTRAL NEB.  WITH LARGE SCALE ASCENT AND
STRONG PRESSURE FALLS OVERSPREADING THE LOWER/MID MO RIVER VALLEY
TODAY... EXPECT GRADUAL RECOVER/EROSION OF LOW CLOUDS FROM WEST TO
EAST ACROSS WW.  THIS WILL RESULT IN MODERATE TO STRONG INSTABILITY
OVERSPREADING THE WW DURING THE AFTERNOON/EVENING.  VERY STRONG
SHEAR WILL SUPPORT SUPERCELLS...WITH ATTENDANT THREAT OF STRONG
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24040.


...EVANS

412,0943 380,0925 380,0945 412,0964