

958 

WWUS20 KWNS 260444

SEL0

SPC WW 260444

MNZ000-NDZ000-SDZ000-261200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 370

NWS STORM PREDICTION CENTER NORMAN OK

1140 PM CDT TUE JUN 25 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN MINNESOTA

  EASTERN NORTH DAKOTA

  NORTHEAST SOUTH DAKOTA



* EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1140 PM

  UNTIL 700 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

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

NORTHEAST OF FARGO NORTH DAKOTA TO 30 MILES SOUTHEAST OF

WATERTOWN SOUTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 364...WW 368...WW 369...



DISCUSSION...SEVERAL CLUSTERS/SHORT LINES OF STRONG TO SVR STORMS

EXPECTED TO PERSIST INTO THE OVERNIGHT ALONG BOTH NW-SE WARM FRONT

IN FAR ERN ND/WRN MN...AND ALONG N-S WINDSHIFT/COLD FRONT FARTHER

WEST. MODEST DEEP SHEAR SHOULD LIMIT OVERALL SVR THREAT. BUT HIGH PW

AND STEEP MID-LVL LAPSE RATES SUGGEST POTENTIAL FOR PRECIP-ENHANCED

DOWNBURSTS. A TORNADO OR TWO ALSO CANNOT BE RULED OUT...MAINLY IN

ZONE OF MOIST...LOW-LVL SELY FLOW NEAR WARM FRONT. SOME DEGREE OF

LARGE-SCALE ASCENT WILL PERSIST ACROSS REGION AS BROAD...NEG-TILT

UPR TROUGH AMPLIFIES ENE INTO THE UPR MS VLY.



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 500. MEAN STORM MOTION

VECTOR 22020.





...CORFIDI

