

229 

WWUS20 KWNS 122325

SEL9

SPC WW 122325

NDZ000-130700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 469

NWS STORM PREDICTION CENTER NORMAN OK

630 PM CDT SUN JUN 12 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL NORTH DAKOTA



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 630 PM UNTIL

200 AM CDT.



TORNADOES...HAIL TO 2 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 100 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHWEST OF

MINOT NORTH DAKOTA TO 45 MILES EAST OF LEMMON SOUTH DAKOTA.  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 467...WW 468...



DISCUSSION...SCATTERED THUNDERSTORMS ARE LIKELY IN INCREASE IN

COVERAGE THIS EVENING ACROSS WESTERN ND AND SPREAD ACROSS THE WATCH

AREA.  FAVORABLE LOW LEVEL VERTICAL SHEAR AND APPROACHING MID LEVEL

SHORTWAVE TROUGH WILL PROMOTE A RISK OF SUPERCELLS...INCLUDING

ISOLATED TORNADOES.  OTHERWISE...LARGE HAIL AND DAMAGING WINDS WILL

BE POSSIBLE.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 25030.





...HART

