

347 

WWUS20 KWNS 010959

SEL8

SPC WW 010959

MNZ000-NDZ000-SDZ000-011700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 708

NWS STORM PREDICTION CENTER NORMAN OK

500 AM CDT MON AUG 1 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL MINNESOTA

       SOUTHERN AND EASTERN NORTH DAKOTA

       FAR NORTHEAST SOUTH DAKOTA



EFFECTIVE THIS MONDAY MORNING FROM 500 AM UNTIL NOON CDT.



HAIL TO 2 INCHES 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 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES EAST

NORTHEAST OF SAINT CLOUD MINNESOTA TO 65 MILES WEST NORTHWEST OF

JAMESTOWN NORTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 707...



DISCUSSION...COMPLEX MCS EXPECTED TO PERSIST OVER PARTS OF THE ERN

DAKOTAS AND MN THROUGH LATER THIS MORNING.  ERN PART OF SYSTEM

SHOULD CONTINUE TO FORWARD PROPAGATE MAINLY SE INTO WRN AND PERHAPS

CNTRL MN...WHILE ELEVATED STORMS CONTINUE TO REGENERATE ATOP COLD

POOL ON WRN SIDE OF CONVECTIVE SYSTEM OVER SRN/ERN ND.  CONTINUING

PRESENCE OF STEEP MID LVL LAPSE RATES...RICH LOW LVL MOISTURE...AND

25-30 KT SWLY LLJ /POSSIBLY ENHANCED BY A DISTURBANCE IN SRN STREAM

JET/ SUGGEST A POTENTIAL FOR SPORADIC LOCALLY DMGG WIND AND HAIL.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 29025.





...CORFIDI

