Tag Archive for 'clipper'
January 10th, 2010 by Steven DiMartino
9:16 AM
Another cold day is expected for the Philadelphia and New York City metropolitan area as temperatures are bone chilling cold this morning. Many locations are in the single digits and teens this morning with only a rebound into the lower to mid 20’s over the interior and mid to upper 20’s along the coast. [...]
January 4th, 2010 by Steven DiMartino
PREMIUM CONTENT
7:16 AM
The arctic air is certain in place as a strong negative NAO dominates the eastern third of the United States. While Polar and Arctic disturbances can still produce a healthy moderate snowfall like potentially for Friday evening, the more significant winter storms usually has interaction and influence from the Sub Tropical Jet Stream. [...]
March 14th, 2009 by Steven DiMartino
6:46 AM
The first few days of transition from the negative NAO pattern to the negative EPO pattern will likely play on your senses in thinking that Spring is finally here for good. Not so fast! While high pressure will reposition itself off the coast on Tuesday and Wednesday, leading to mild conditions, the influence of [...]
March 12th, 2009 by Steven DiMartino
7:34 AM
There is a lot of moisture pooling over the southern Mississippi Valley this morning along the stalled cold front that blew through last night. The good news is that the high pressure system over the western Great Lakes is strong enough to keep much of that moisture to the south of the forecast area [...]
March 2nd, 2009 by Steven DiMartino
4:51 PM
The month of March is usually a month of transition from winter to spring. It’s the month of college basket ball dreams. Where everyones baseball team is in first place and anything is possible. It’s also a month where one week 12 inches can fall on the ground and the next, temperatures are in [...]
February 23rd, 2009 by Steven DiMartino
6:05 AM
There is strong agreement in the model guidance that a very strong Arctic cold front will plow through the forecast area on Friday with heavy rain and rapidly falling temperatures on Friday evening. The cold air behind this cold front is rather impressive for late February and early March, and I think the MOS [...]
February 22nd, 2009 by Steven DiMartino
8:52 AM
The secondary low has yet to develop this morning, however the rain and snow has already entered the forecast area via the fast moving cold front. For the most part, this clipper and the eventual coastal low that will form and become the primary low pressure system by late this afternoon will have a [...]
February 21st, 2009 by Steven DiMartino
9:17 AM
The Alberta Clipper that will impact the forecast area late tonight through Sunday morning is currently entering the Ohio Valley and will race towards the eastern Great Lakes by this evening. The latest water vapor images do hint at the potential for some coastal redevelopment as the base of the trough is showing the [...]
February 20th, 2009 by Steven DiMartino
6:48 AM
As the clipper exits towards the Canadian Maritimes on Sunday night, the low pressure system will intensify and support a strong pressure gradient over the forecast area on Monday. As a result, cold and windy conditions can be expected once again through Monday.
Strong high pressure will dominate the forecast area Tuesday and Wednesday [...]
February 20th, 2009 by Steven DiMartino
6:38 AM
The strong low pressure system to the north of the forecast area will continue to support a strong pressure gradient over the region. As a result, a cold, strong northwesterly wind will continue to impact the forecast area with winds ranging from 20 to 40 mph with higher gusts through at least the afternoon [...]