Friday 9 a.m.
Ahead of a cold front, temperatures will soar toward 90 degrees from Baltimore to Philadelphia, and will approach 90 in New York City and Boston. However, behind the front, the afternoon temperatures will be 10-15 degrees lower for all of those places this weekend. The cold front will sponsor some showers and thunderstorms as it cuts into the warm air.
Tomorrow looks like a nice day from the Great Lakes into the Appalachians, with afternoon temperatures in the 70s. If you are going camping, keep in mind nighttime temperatures will sink into the 40s at relative low spots in the Appalachians and into the 50s in the suburbs of the big East Coast cities.
This video has more:
Suppose you're planning a wedding for 4 p.m. tomorrow just north of Philadelphia. Do you need a tent in case it rains? These maps show predicted rainfall between 2 p.m. and 8 p.m. EDT tomorrow from the same model. One version was the 8 p.m. run from last night (left) and the second was from the 2 a.m. run. One shows rain and the other doesn't. Best advice? Play it safe and plan for the chance of rain. (And yes, my wife and I will be at that wedding (Congrats Matthew and Suzy!).
Some bands of rain broke out in the I-95 corridor, the most important of which brought a batch of heavy rain to the New York City area between 8:30 and 10 a.m.
in response to the approach of a deepening trough from the Plains, a Midwest low pressure area will grow stronger as it moves east to arrive on the New England coast Saturday morning.
In the I-95 corridor from D.C. to NYC, temperatures will be up past 80 this afternoon. However, between now and Saturday, a major change is on he way.
In eastern New England, an onshore flow of cool damp air prevailed all morning. There could be a last-minute warmup this afternoon. The affected areas will certainly be warmer tomrrow morning than they were this morning.
Now, out-of-season warmth is set to be the rule through midweek from the Ohio Valley to much of New England. Peak leaf color in Pennsylvania and New Jersey ranges from now northern mountains) to Halloween (in parts of South Jersey).
The Pacific storm caused some strong thunderstorms in northwest Oregon yesterday, bringing an end to a very long hiatus in the need for tornado warnings there. Note also the lack of tornadoes in eastern Tennessee.