Thursday 11 AM
Here is today's video. In addition to showing today's cold front, there is an emphasis on the storm threat for the Northeast Sunday night and Monday. Since that storm is not coming for at least 3 days, there are many things that can change. In a north to south distance of about 125 miles, storm can cause anything from a foot of snow with temperatures in the 20s to an inch of rain with readings in the 40s. There dangerous ice in the transition zone.
This map shows the pressure pattern at 10 AM. A cold front can be identified by the change in curvature of the isobars. This change is easiest to see nearest the northern and southern ends of the front.
On this radar picture, you can see a line of snow squalls. These are possible from eastern Pennsylvania through New England this afternoon. They don't last long, but historically, this is the kind of set up that causes serious multiple vehicle accidents.
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