Today's video includes a time-lapse movie filled with cumulus clouds then presents a forecast for this week and hints about next weekend. The weekend was cooler than average in the major cities and coastal resorts from Maryland to Maine. The next few days will be warmer, but before any kind of heat wave can get established, another cold front will cross the Great Lakes and Northeast.
Bertha, just east of the Bahamas, had winds approaching hurricane force as the storm moved northward early this morning. As shown on this map, all computer model tracks show the storm staying well east of the U.S mainland.
Tropical Storm Colin is caught in the southern stream while the northern stream is helping to send unseasonably cool air out of central Canada.
Then, as the cold front arrives, there may be violent thunderstorms. This map shows the early morning SPC assessment of the severe weather risk on Sunday:
Farther east on Sunday, rain is likely to be more extensive, and there is a severe thunderstorm threat from the Middle Atlantic region on south.
With the second front, shower activity may be spotty at first as the system comes through Chicago on Saturday but could be wetter and more stormy than the first front by time it reaches the I-95 corridor Sunday.
A pocket of dry air covers most of the area from the Great Lakes to the back edge of the East Coast clouds. This suggests sunshine will be the rule across the Northeast until the next frontal system approaches later in the week.
Here is the severe weather outlook for today from the NWS Storm Prediction Center. Note at the bottom the population in each alert area is listed. Keep in mind that in any given severe weather situation, the number of individuals directly affected is far less than the number of people potentially threatened.