WATCHES: Severe Thunderstorm Watch Number 595

WWUS20 KWNS 092219
SEL5
SPC WW 092219
NDZ000-100600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 595
NWS STORM PREDICTION CENTER NORMAN OK
415 PM MDT MON AUG 9 2010

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

WESTERN AND NORTHERN NORTH DAKOTA

EFFECTIVE THIS MONDAY AFTERNOON FROM 415 PM UNTIL MIDNIGHT MDT.

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 45
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH
NORTHWEST OF MINOT NORTH DAKOTA TO 60 MILES SOUTH SOUTHWEST OF
DICKINSON NORTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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.

DISCUSSION...TSTMS...INCLUDING POSSIBLE SUPERCELLS...EXPECTED TO
INCREASE OVER WRN ND THIS EVE...ALONG AND NEAR SW-NE FRONT. FRONT
SHOULD BEGIN DRIFTING NW LATER THIS EVE IN RESPONSE TO PRESSURE
FALLS/ASCENT SPREADING NNE INTO ERN MT AHEAD OF ID/UT UPR IMPULSE.
STEEP LOW LVL LAPSE RATES...INCREASING LOW LVL MOISTURE...AND
PRESENCE OF SUFFICIENT DEEP SHEAR SUGGEST LIKELIHOOD FOR SUSTAINED
STORMS/ SUPERCELLS WITH A RISK FOR SVR HAIL/LOCALLY DMGG WIND...AND
POSSIBLY A TORNADO. ADDITIONAL STORMS MAY MOVE INTO PARTS OF ND
LATER TONIGHT AHEAD OF ID/UT UPR IMPULSE.

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 500. MEAN STORM
MOTION VECTOR 22030.

...CORFIDI

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