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Area Forecast Discussion
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
992 FXUS65 KMSO 131946 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 146 PM MDT Tue Aug 13 2024 .DISCUSSION...Low pressure currently whirling its way across central Idaho is the driving force for developing shower and thunderstorm activity across central Idaho and southwest Montana. Showers and storms will extend north and east through this evening as the low shuffles its way through the region. Local heavy rain will occur with stronger storms. A few showers will linger across the region tonight and Wednesday morning behind this system. High pressure will give us a brief break in the action Wednesday however another dynamic low pressure system will make its presence known Thursday into Friday. This system will impact the entire Northern Rockies with showers and thunderstorms Thursday and Thursday night. Friday the focus of storms will be from west central Montana throughout Northwest Montana and along the Continental Divide. Widespread healthy rain amounts up to 1/2" will occur across Northwest Montana with some areas along the divide receiving locally higher amounts. By Sunday the weather settles into a pattern with an upper low circulating off of the Washington coast through the middle of next week with strong high pressure holding on to a firm grip over the central U.S. This will leave a general southwest flow. Whatever moisture is available will be ushered our way. If pieces of energy break away from the upper low off the coast then the Northern Rockies will receive showers and thunderstorms. Just know it`s tough to pick out those subtle features that will bring us such convection a week or so out so stay tuned. Temperatures will creep back up into the upper 80s Sunday through the middle of next week. && .AVIATION...Developing showers and thunderstorms will impact all terminals beginning 13/2000z. Lightning and gusty winds will occur with storms. Some of the stronger storms will bring heavy rain. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...&& $$