Monday 8 AM
The national weather map is much simpler than usual. There are just two main pressure centers: a high pressure area centered near the Pennsylvania - West Virginia border, and a low pressure centered at the California - Arizona border. The low pressure area in the Southwest is there much of the summer. The high in the Northeast will bring the longest period of hot weather so far this summer to the northeastern third of the country. This video has more.
This pressure map shows the high pressure area that is sponsoring this week's sunny, hot and humid weather.
With more hot weather still to come... and no sign of a break this week, it might be soothing to express the forecast in cool weather terms. So, chill out and let's see what's going to happen. The cold fact is there's no immediate end to the heat wave. Cold fronts moving across Canada are on ice for the time being because of a high pressure area frozen in place in the East.
When you consider how long the heat will last, we've only seen the tip of the iceberg so far. Air conditions are right for a few stray thunderstorms to crystalize during the next few days, but it's no definite thing, if you get my drift. My suggestion would be to stay by the cool pool or maybe sip on some slush or water ice. Hopefully, the upcoming weather won't throw cold water on your plans.
So, this week, the I-95 corridor from Virginia to New Jersey faces the furnace fires of grandiose grilling, the super searing, intensely igneous, fiercely firing and flaring, brazenly broiling pinnacle of perspiration... the summit of sweat and a surfeit of sultriness that is certainly sweltering. The intense insolation, braising and baking, sears the sidewalks and simmers the streets. It is just that simple.
Between yesterday morning and early this morning, quite a bit of lightning occurred. There can be some lightning all the way to the East Coast with this cold front, but the activity is likely to diminish. This map shows the distribution of lightning strikes in the (almost) 24-hour period ending at 7:30 ET this morning
The peak of the upcoming warmup should come on Monday for much of the Northeast. This map shows computer projections of temperatures at 4 p.m. ET Monday afternoon. Note the 80+ area in Pennsylvania. Cooler air will arrive by midweek.
As a storm slowly develops along the North Carolina coast, rain that was affecting areas of Michigan, Ohio and western Pennsylvania will tend to redevelop farther east and south. A flow from the east (see map) will keep it cool through tomorrow from New York City to Boston.
A sunny triangle is framed by a band of clouds moving southeast from Wisconsin, rain clouds over the Southeast and the western fringe of a North Atlantic storm.
Jumping ahead almost two weeks, map is the 500mb flow forecast for Mothers Day. If correct, the Middle and North Atlantic states would have a sunny day with afternoon temperatures as high as the 80s! Please remember the models do best in the short range.
This map shows the pressure pattern at 9 a.m. ET. As the high moves closer and the storm moves farther away tomorrow and Wednesday, there should be an increase in sunshine with milder afternoons.