MESOSCALE DISCUSSION 1424
   NWS STORM PREDICTION CENTER NORMAN OK
   1018 PM CDT FRI JUL 03 2009
   
   AREAS AFFECTED...NERN MT
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 544...
   
   VALID 040318Z - 040415Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 544
   CONTINUES.
   
   REGIONAL RADARS INDICATED A LINE OF TSTMS EXTENDING FROM NERN MT
   INTO FAR NWRN ND...WITH THESE STORMS TRACKING SEWD AT 30 KT ALONG A
   MARGINAL INSTABILITY GRADIENT.  EFFECTIVE BULK SHEAR OF 30-40 KT
   ACROSS FAR NERN MT/NWRN ND HAS CONTINUED TO INCREASE AS STRONGER
   BAND OF WLY MID LEVEL WINDS DEVELOP SWD ACROSS SASKATCHEWAN.  0230Z
   WSR-88D VAD AT GGW INDICATED 40 KT NWLY WINDS AT 1.5-2 KM AGL. 
   THESE WINDS /IF THEY CAN REACH THE SURFACE IN A DOWNDRAFT/ COMBINED
   WITH 30 KT SPEED OF TSTM LINE SUGGESTS LOCALIZED STRONG WIND GUSTS
   REMAIN POSSIBLE.  HOWEVER...FURTHER WEAKENING OF INSTABILITY
   SUGGESTS THAT OVERALL SEVERE WEATHER THREAT SHOULD DIMINISH IN THE
   NEXT HOUR OR SO.
   
   ..PETERS.. 07/04/2009
   
   
   ATTN...WFO...BIS...GGW...
   
   LAT...LON   47390393 47160478 47100606 47320645 48120622 48460577
               48470490 48360394 47390393