I will be out of the office through June 29, with only occasional posts likely.
This video includes the forecast from today through the weekend in the Northeast and Great Lakes.
Thunderstorms were common yesterday and last night. This map shows the 10's of thousands of lightning strokes observed between 10AM ET yesterday and 9:35 AM ET today (June 12). New storms developed this morning in eastern Maryland and eastern Virginia. These may spread toward Philadelphia and then New York City this afternoon and evening.
Labor Day is a week from Monday. The computer model used here, the GFS ensemble mean, suggests the weather will favor outdoor late summer activities across the Great Lakes and Northeast:
In response to heating at ground level and a weak cold front approaching from the west, showers and locally strong thunderstorms should develop across northern Ohio this afternoon.
... much greater interest is being generated on threats and rumors about tropical storms. It is worthwhile to read Dan Kottlowski's authoritative reports on this. Here is a copy of his map from this morning:
The tropical Atlantic shows signs of life in the storm development department. Dan Kottlowski's expert discussion suggests the third storm (which could be Hermine) of current concern is one that could head to the Bahamas, Florida, the Gulf or ???
A large high pressure area centered just south of Chicago will furnish a northwesterly of pleasantly cool and dry air to the eastern Great Lakes and all of the Northeast today into Tuesday.
As the trough moves through each locality, warm humid weather will be followed by showers and thunderstorms, then cooler an drier air will arrive