

000 

WWUS20 KWNS 180601

SEL4

SPC WW 180601

MNZ000-180900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 414

NWS STORM PREDICTION CENTER NORMAN OK

100 AM CDT MON JUN 18 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN MINNESOTA



EFFECTIVE THIS MONDAY MORNING FROM 100 AM UNTIL 400 AM CDT.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES WEST

NORTHWEST OF INTERNATIONAL FALLS MINNESOTA TO 15 MILES SOUTH

SOUTHEAST OF BRAINERD MINNESOTA.  FOR A COMPLETE DEPICTION OF THE

WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 413...



DISCUSSION...FORWARD-PROPAGATING SQLN WITH 3 KM DEEP 50 KT REAR

INFLOW JET /PER MVX VWP/ IN NW MN EXPECTED CONTINUE NE INTO

REMAINING AXIS OF LOW LEVEL MOISTURE/WEAK INSTABILITY OVER N CNTRL

MN.  MOMENTUM OF CONVECTIVE SYSTEM SUGGESTS A THREAT FOR ISOLATED

DAMAGING WINDS IN THE MN NORTH WOODS DESPITE GRADUAL LOSS OF

INSTABILITY WITH NEWD EXTENT.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION

VECTOR 25045.





...CORFIDI

