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Severe Thunderstorm Watch 738
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WW0738 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Very Low Very Low
Severe Wind 65 kt+ Wind
Low Very Low
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 738
   NWS STORM PREDICTION CENTER NORMAN OK
   730 PM CDT THU SEP 10 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL INTO NORTHEASTERN NORTH DAKOTA
   
   EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 730 PM
   UNTIL 200 AM 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 70
   STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTH OF
   BISMARCK NORTH DAKOTA TO 65 MILES NORTH NORTHEAST OF DEVILS LAKE
   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.
   
   DISCUSSION...VERY STRONG UPPER LEVEL SYSTEM DIGGING ACROSS THE NRN
   HIGH PLAINS WILL FOCUS INCREASING THUNDERSTORMS OVER CENTRAL ND THIS
   EVENING/OVERNIGHT.  00Z SOUNDINGS INDICATE STEEP MID LEVEL LAPSE
   RATES WITH SUFFICIENT INFLUX OF LOW LEVEL MOISTURE TO SUSTAIN
   MODERATE MUCAPE OVERNIGHT.  LOW LEVEL SHEAR REMAINS WEAK...HOWEVER
   SUFFICIENT DEEP LAYER SHEAR WILL REMAIN IN PLACE FOR ORGANIZATION
   INTO CLUSTERS/LINES AND PERHAPS A FEW SUPERCELLS.  LARGE HAIL AND
   HEAVY RAIN WILL BE PRIMARY THREATS...ALTHOUGH ISOLATED DAMAGING
   WINDS REMAIN POSSIBLE.
   
   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 26020.
   
   
   ...EVANS
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