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Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0736 PM CDT Fri Aug 12 2022

Valid 130100Z - 131200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE NORTHERN ROCKIES REGION...

...SUMMARY...
Isolated severe gusts and large hail remain possible over parts of
the northern Rockies and vicinity.

...01z Update...

Early-evening water-vapor imagery depicts a weak short-wave trough
lifting northeast across OR/WA. Eastern-most influence of this
feature is glancing portions of ID into extreme northwestern MT.
Over the last few hours scattered convection that initiated over the
mountains of ID/western MT has propagated across much of the higher
elevations with the leading edge of this activity now spreading
toward lower elevations in the lee of the northern Rockies. Latest
radar data depicts loosely organized convection from near
HLN-CTB-southeast AB, moving northeast across an air mass
characterized by low sub-cloud RH values with 50F temp/dew point
spreads. Very steep low-level lapse rates and adequate buoyancy
suggest this activity may advance a bit further downstream than
earlier indicated. Some increase in LLJ over north-central MT may
encourage convection to remain loosely organized this evening. Have
extended severe probabilities into this portion of MT to account for
these trends.

..Darrow.. 08/13/2022