I mentioned the possibility of this storm in the last weather thread. It proceeded to trend south on the models but over the past day they have shifted northwards on every run. Normally I would wait a little longer because Des Moines is on the northern fringe but feel with the limited amount of time before the onset of the system that a thread is warranted now. I must emphasize once again that Des Moines is on the northern fringe of this system and it wouldn't take much of a shift to take the city out of the storm. Looks to be a rain, to freezing rain to snow affair.
It looks like somewhere in central to southern Iowa there will be a narrow band of precip that first drops some rain/freezing rain, followed by moderate to heavy snowfall accumulations. To the north there should be a rather sharp cutoff of precip and to the south relative warmth will cause rain and limit the travel impacts. If you don't want as much winter weather hope for good thunderstorms to fire in the Missouri bootheel region as that would steal some of the moisture the cold side of the system has to deal with.
Definitely worth monitoring the next couple runs to see where the storm shifts.
It looks like somewhere in central to southern Iowa there will be a narrow band of precip that first drops some rain/freezing rain, followed by moderate to heavy snowfall accumulations. To the north there should be a rather sharp cutoff of precip and to the south relative warmth will cause rain and limit the travel impacts. If you don't want as much winter weather hope for good thunderstorms to fire in the Missouri bootheel region as that would steal some of the moisture the cold side of the system has to deal with.
Definitely worth monitoring the next couple runs to see where the storm shifts.
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