Friday 10 a.m.
It is very warm from the Middle Atlantic states to the Ohio Valley today. While cooling will come to the Ohio Valley early next week, there will be a pronounced cooldown from Maine to Michigan to Maryland. There is a danger of a frost or freeze in much of that area Monday night and/or Tuesday night. Such an event is quite common at the end of March, but this year the effects on vegetation could be more severe because growth has progressed much further than usual. The video shows why the cooldown should occur.
Thunderstorms were common yesterday and last night as a large low pressure area lumbered eastward from the Plains. This map shows the lightning stroke pattern from 8 a.m. EDT yesterday to just before daybreak today.
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But it will get milder again for a while next week.
Colder Sunday, then milder by midweek
It could feel like spring later this weekend.