A strengthening storm that was centered near Cincinnati, Ohio, at 8 a.m. EDT will be off the New England coast tomorrow morning. Amazing temperature changes are occurring with this system. For example, at St Louis, the temperature was 80 degrees at 4 p.m. CDT yesterday. This morning, 14 hours later, there was mix of snow and rain and it was 56. Heavy gusty thunderstorms announced the arrival of the cold front, and there could be a band of heavy showers and thunderstorms all the way to the Middle Atlantic coast tonight. Several inches of snow blanketed Chicago, and Buffalo will have blizzard conditions this afternoon and evening.
There will be a rapid freeze-up overnight from Boston to Washington, D.C., and temperatures will stay below freezing in all but the southernmost part of that area all day tomorrow. However, the high pressure area marking the center of the cold air mass will be east of Virginia by Friday, and the southwesterly flow behind it will take the cold air away quickly.
This pressure map shows the storm center. The front to the east (re line) marks the boundary between warm air to the south and progressively colder air to the north.
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