Tag Archive for 'boundary layer'
March 4th, 2010 by Steven DiMartino
7:16 AM
Yet another coastal low is slow to leave the northern Mid Atlantic as mid and high level clouds remain over much of the Philadelphia and New York City metropolitan area.
Atlantic moisture will continue to rotate through the region leading to broken to overcast cloud cover through tomorrow afternoon. A series of weak disturbances will [...]
March 3rd, 2010 by Steven DiMartino
8:15 PM
Strong moisture advection off the Atlantic is supporting light to moderate rain along the coast and light snow over portions of Connecticut, the Hudson Valley, and northeastern Pennsylvania. The snow will continue to slowly accumulate over these locations as temperatures slowly fall into the upper 20’s to lower 30’s with accumulations of another 1 [...]
March 2nd, 2010 by Steven DiMartino
6:36 PM
I have been hinting for some time that the precipitation shield for tonight’s storm was going to be more expansive than what was being forecasted. However, I am not very impressed with the accumulation potential for this storm. The first and foremost is the warm boundary layer temperatures.
Besides the fact that the surface freezing [...]
March 1st, 2010 by Steven DiMartino
9:15 PM
A very energetic Sub Tropical disturbance is rapidly developing along the Gulf Coast this evening. However, a more important disturbance that will determine the forecast is actually along the West coast.
While the storm along the Gulf Coast certainly appears ominous, the progression of the Pacific storm this evening into the coast of Washington and [...]
March 1st, 2010 by Steven DiMartino
6:45 AM
The water vapor this morning shows that one major storm is finally exiting and another is on the way over the southern Plains.
The winter storm over New England is the result of the lingering upper low from late weeks winter storm that interacted with another Sub Tropical disturbance over the Atlantic. This low pressure [...]
February 28th, 2010 by Steven DiMartino
10:42 AM
The upper low from the winter storm a few days ago simply will not quit. I’m about to call this storm, Rocky Balboa as every time you think it is finished, the storm gets back up for another round.
Luckily the next round of this storm will be focused well to the north and east [...]
February 23rd, 2010 by Steven DiMartino
10:55 PM
There are times when as a forecaster, I look at a water vapor satellite and everything just comes together for me in terms of how I think this storm will evolve. Usually it is a matter of just sitting back and watching the water vapor loop again and again, just observing the way the [...]
February 13th, 2010 by Steven DiMartino
11:50 AM
The northern Mid Atlantic is getting a bit of a breather from the active winter weather of the past week. After two major winter storms approaching blizzard conditions, impacted the region over the past seven days, high pressure is providing generally tranquil conditions.
As we can see from the water vapor satellite picture, another storm [...]
February 8th, 2010 by Steven DiMartino
9:37 AM
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The forecasted soundings for Wednesday morning are rather interesting and will likely have a key impact on snowfall totals throughout the region.
– Weather When Posted –Temperature: 23°F;Humidity: 57%;Heat Index: 23°F;Wind Chill: 10°F;Pressure: 29.99 in.;
January 31st, 2010 by Steven DiMartino
9:27 AM
The low pressure system that brought over 6 inches of snow to many locations throughout southern New Jersey is exiting into the Atlantic. Behind it, an Arctic air mass remains in control with temperatures in the single digits and teens for morning lows.
High pressure will continue to build into the region with decreasing winds [...]