

000 

WWUS20 KWNS 250107

SEL4

SPC WW 250107

MNZ000-NDZ000-250600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 354

NWS STORM PREDICTION CENTER NORMAN OK

805 PM CDT SAT MAY 24 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN MINNESOTA

       EASTERN NORTH DAKOTA



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 805 PM

UNTIL 100 AM CDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHWEST OF HALLOCK

MINNESOTA TO 65 MILES SOUTH OF FARGO NORTH DAKOTA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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 348...WW 349...WW

350...WW 351...WW 352...WW 353...



DISCUSSION...BROKEN BAND OF TSTMS WITH EMBEDDED SUPERCELLS INVOF ABR

EXPECTED TO CONTINUE MOVING/DEVELOPING NNEWD THIS EVENING...IN EXIT

REGION OF FAST MOVING JET STREAK.  ALTHOUGH LOW-LEVEL THERMAL

ENVIRONMENT WILL REMAIN MARGINAL FOR TORNADOES...PRESENCE OF

EXISTING LOW-LEVEL CIRCULATIONS AND NEWD MOTION OF FAVORABLE DEEP

WIND FIELD/ZONE OF ASCENT WITH JET STREAK SUGGEST A CONTINUED THREAT

FOR TORNADOES IN ADDITION BOWING SEGMENTS WITH HIGH WIND/HAIL.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

450. MEAN STORM MOTION VECTOR 21035.





...CORFIDI

