

189 

WWUS20 KWNS 182007

SEL7

SPC WW 182007

MNZ000-190400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 467

NWS STORM PREDICTION CENTER NORMAN OK

310 PM CDT THU JUN 18 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN AND CENTRAL MINNESOTA



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 310 PM UNTIL

1100 PM CDT.



TORNADOES...HAIL TO 3 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 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHWEST OF

SAINT CLOUD MINNESOTA TO 20 MILES EAST SOUTHEAST OF FAIRMONT

MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 461...WW 462...WW

463...WW 464...WW 465...WW 466...



DISCUSSION...WITH A VERY UNSTABLE AIR MASS NOW IN

PLACE...THUNDERSTORMS EXPECTED TO DEVELOP RAPIDLY ACROSS THE WATCH

AREA THRU THE REMAINDER OF THE AFTERNOON.  WITH FAVORABLE DEEP LAYER

SHEAR...STEEP LAPSE RATES AND MLCAPES AOA 3000 J/KG...SUPERCELLS

INCLUDING VERY LARGE HAIL AND TORNADOES CAN BE EXPECTED.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

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

550. MEAN STORM MOTION VECTOR 24025.





...HALES

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