Here is today's morning forecast video:
There were numerous thunderstorms yesterday. This is the lightning stroke map covering the period from 8 ET yesterday morning to 7:30 ET this morning. Thunderstorms will be less numerous today, but any that do form can cause briefly strong and gusty winds.
Aloft, winds have been stronger than usual for early July. When thunderstorms boil and bubble skyward, some of that high speed can be transferred down to where all the people, buildings and crops are. Also, as rain descends into drier air, there is evaporative cooling. The cooled air is more dense than the hot, humid air outside the storm, and so it rushes down then spreads out at the ground. Unfortunately, the storms yesterday and last night turned deadly and destructive. Yesterday's report included a map showing the areas that the NWS Storm Prediction Center believed were most vulnerable to high winds. The forecast was very good in most areas, but the high winds persisted farther east.
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.
Although the storm is not headed toward the US mainland, 6 to 8 foot waves are found not too far offshore from the Carolinas.