Friday 9 a.m.
The video explores how the weather should unfold this weekend and early next week. While longer-range models show cold air building in Canada and moving south later next week, no snow or freezing weather is in the forecast for the Northeast for the next 10 days.
Nadine has been a fixture over various parts of the open Atlantic for weeks now, and it is likely to still be on the map at the start of October.
Note how the satellite coverage ends over the eastern Atlantic. The satellite that had monitored much of the U.S. and Atlantic Ocean malfunctioned earlier this week. The geostationary satellite that had been monitoring the western U.S. and the Pacific was moved east to make up for some of the lost coverage, but you can see the eastern edge of its picture taking ability from its newest location.
While the Northeast and Great Lakes regions had fine weather much of the Fourth of July weekend, thunderstorms were very common in other parts of the country. This map shows lightning strokes from 7 a.m. ET yesterday until 6 a.m. ET today:
Over the Ohio Valley, rain is starting nudge northward again, prodded by one of a series of upper air disturbances embedded in the flow. It appears the rain will advance across Pennsylvania overnight, reach the area from New York City to Boston tomorrow... then head out to sea.
Farther north, the area from Chicago to Boston looks most likely to have sunshine and dry weather. Cloud cover will vary during the weekend, and I focus on that aspect of the weekend forecast in this video.
A band of heavy rain and locally violent thunderstorms moved from the New York City area at 4 a.m. to just past Boston (distance: 188 miles) by 9:30 this morning. Note the stunning contrast between where it is pouring (dark red) and where it has dried out.
On the map, showers and thunderstorms were located along and ahead of the gray line that cuts through Pennsylvania and along/ahead of the blue line. Both should be off the East coast by Thursday. Drier air from the Upper Midwest should filter into the Northeast later in the week.
The large storm that drenched the Northeast during the weekend has drifted out to sea and somewhat drier air is coming in to replace it. However, another upper air trough extending from Wisconsin to Louisiana is supporting several pockets of showers and thunderstorms.