Dry slotted
Snapshot of regional radar shortly before 3PM CST. This area of precipitation/mostly snow moved north from western Iowa. Notice the limited return of moisture in souteast Minnesota and Iowa.
Two things have occurred with this second storm today. First, a strong mid level jet stream has driven a slot of dry air into Iowa and southern Minnesota. This could result in a minimal accumulation of snow and sleet from St. Paul to Red Wing to Rochester this evening.
Secondly, a squall line that produced several tornadoes in Missouri and Illinois tapped-out the deeper moisture from the Gulf.
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Dry slots often occur with major cyclones in our neck of the woods.
Heavy snow and near blizzard conditions remain likely in portions of the Dakotas and western Minnesota. Several inches of snow are expected tonight in northern Minnesota.
Severe Storm reports from today in the Middle Mississippi Valley.
CE