

008 

WWUS20 KWNS 230202

SEL4

SPC WW 230202

MNZ000-NDZ000-230900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 204

NWS STORM PREDICTION CENTER NORMAN OK

900 PM CDT SAT MAY 22 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWEST MINNESOTA

       E CENTRAL AND NORTHEAST NORTH DAKOTA



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 900 PM

UNTIL 400 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60

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 60 MILES WEST

NORTHWEST OF DEVILS LAKE NORTH DAKOTA TO 30 MILES SOUTH SOUTHEAST

OF BEMIDJI 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 202...WW 203...



DISCUSSION...INTENSIFYING SLY LOW-LEVEL JET WILL CONTINUE TO SUPPORT

ELEVATED DESTABILIZATION N OF A WARM FRONT INVOF THE ND/SD

BORDER...WITH A CONTINUED EXPANSION IN STORMS NORTHEASTWARD ACROSS

ERN ND AND INTO NWRN MN.  AS STRONGER MID-LEVEL FLOW SPREADS ATOP

THIS REGION...DEGREE OF DEEP-LAYER SHEAR COUPLED WITH AMPLE ELEVATED

INSTABILITY WILL SUPPORT ORGANIZED/INTENSE STORMS CAPABLE OF

PRODUCING LARGE HAIL.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 24035.





...GOSS

