SPC AC 080538

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1238 AM CDT Thu Jun 08 2017

   Valid 091200Z - 101200Z

   ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
   THE NORTHERN PLAINS...

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM EXTREME
   EASTERN MT TO NORTHWEST MN...

   ...SUMMARY...
   Strong/severe thunderstorms are possible across the northern Plains
   Friday. Hail/wind are the primary threats.

   ...Northern Plains...

   A belt of strong mid-level flow, in excess of 60kt at 500mb, will
   translate inland across the Great Basin into the northern High
   Plains by the end of the period. This should flatten the dominant
   upper ridge currently in place across the High Plains as an apparent
   short-wave trough ejects across eastern MT into western ND Friday
   night. In response to this feature, lee cyclone will be shunted off
   the northern Rockies to a position over southwestern ND by mid
   afternoon. Strong boundary layer heating is expected across the
   Plains where surface-3km lapse rates should approach dry adiabatic
   as temperatures warm into the 90s. While surface parcels should
   approach their convective temperatures along the lee trough, it
   appears thunderstorms will struggle to develop south of the warm
   front as upper ridging and a plume of very warm air at 700mb
   suppress thunderstorm activity. However, strong low-level warm
   advection near the international border, along with more impact from
   aforementioned short wave, is expected to induce convection across
   southeast SK and southern MB which should propagate southeast within
   warm advection corridor into the northern Red River Valley. Large
   hail and damaging winds are the primary risks with this activity.

   ..Darrow.. 06/08/2017

   CLICK TO GET WUUS02 PTSDY2 PRODUCT

   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z