

000 

WWUS20 KWNS 300118

SEL9

SPC WW 300118

IAZ000-KSZ000-MOZ000-300800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 389

NWS STORM PREDICTION CENTER NORMAN OK

815 PM CDT THU MAY 29 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND SOUTH CENTRAL IOWA

       FAR NORTHEAST KANSAS

       NORTHWEST AND NORTH CENTRAL MISSOURI



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 815 PM

UNTIL 300 AM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE

MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH OF DES MOINES

IOWA TO 40 MILES WEST OF CHILLICOTHE MISSOURI.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU9).



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 384...WW 385...WW

386...WW 387...WW 388...



DISCUSSION...STRENGTHENING SWLY LOW LEVEL JET EXTENDING INTO IA/NWRN

MO THIS EVENING THROUGH TONIGHT WILL MAINTAIN STRONG LOW LEVEL SHEAR

AND LARGE HODOGRAPHS FOR A TORNADO THREAT TO DEVELOP EWD INTO

CENTRAL IA AND NWRN-NORTH CENTRAL MO.  AN EVOLVING LINEAR MODE WITH

EMBEDDED SUPERCELLS ACROSS ERN NEB/WEST CENTRAL IA IS EXPECTED TO

SPREAD EWD PRODUCING AN INCREASED THREAT FOR DAMAGING WINDS WITH ANY

BOW STRUCTURES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 27040.





...PETERS/THOMPSON

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