After a very active weather week the preceding week with two blizzards over the country, this concluding week has been rather tame. That will be changing for the coming week as at least two major systems will impact the center of the country. These will be systems coming in from the Pacific, actually coming over the top of an upper level ridge that is along the west coast and then moving southeast. They will then intensify over the center of the nation.
For the Chicago metro area, no significant storms will enter the area for a few days. After our mild day in the 40s on Thursday, yesterday we dropped into the upper 30s, today around 30, and Saturday highs only in the lower 20s. Some flurries and very light snow moved through the metro area last night as the colder air moved in. A couple of tenths of an inch of snow fell in a few locations.
Warmer air will start to return Sunday with a high back around 30. The normal high is up to 35 and rising. For Monday we rise into the 40s ahead of an intensifying system over the Plains. This will be the first of two weather systems to impact the metro area next week. Rain will begin Monday afternoon, possibly changing to snow before ending late Monday night as the system rapidly deepens over lake Michigan during the night. Any possible snow amounts will be rather small.
Following the Monday system, colder Canadian air will move over the area for Tuesday and Wednesday. In the mean time a strong upper level system will be diving south along the west coast Tuesday. The surface part of the storm will emerge over southeast Colorado Thursday morning. A very wide swath of precipitation will then spread northeast over the center of the nation during Thursday into Friday. Heavy snow north, rain central, and possibly severe storms over the south. The graphic shows the ECMWF model surface forecast valid Friday morning.
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