Tag Archive for 'atmosphere' at NY NJ PA Weather Forecasts

Significant Snow Storm Expected For The Forecast Area

January 9th, 2009 by Steven DiMartino

7:42 AM
I was really tempted to issue a Stage 3 Alert for locastions from Philadelphia through the New York City metro including central New Jersey and the southern Hudson Valley and Connecticut. However, I think it would be wise to wait for 12Z guidance to confirm the trends and developments I am seeing this morning.
My [...]

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The Cold And Snow Will Not Go Away Through Next Week

January 9th, 2009 by Steven DiMartino

7:30 AM
The Arctic Express is on the way, and this has nothing to do with Santa Claus, however for some it might seem like Christmas morning all over again.
The negative EPO is going to be doing a heck of a job driving arctic cold air into the eastern two-third of the nation through next week. [...]

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Arctic Express On The Way Along With More Snow Potential

January 8th, 2009 by Steven DiMartino

7:49 AM
The theme going forward will likely crush the forecast for anyone going for a warm January. The combination of a strong negative EPO and the postion of the upper low over eastern Canada will support a very cold air mass to dive into the eastern two-thirds of the nation.
There can be no doubt that [...]

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Significant Snow Finally On The Way?

January 8th, 2009 by Steven DiMartino

7:37 AM
There is a growing agreement in the model guidance that a significant snowfall will impact much of the forecast area.
There’s a lot to discuss, but my ideas which I have presented have not changed overall, but I am able now to get in to some details on how this storm will develop on Saturday.
First, [...]

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This Pattern, More Than Meets The Eye

January 7th, 2009 by Steven DiMartino

7:51 AM
Taking a look at the pattern via surface maps, the potential and interest in the pattern through this weekend into next week would best be described as boring, especially the GFS. However, if one was to look at 500 MB, they would come away with a totally different perspective on this pattern that is [...]

Tags: a, air express, amounts, area, Atlantic, atmosphere, blocking, clipper, clippers, coast, cold, cold air, cold conditions, CONUS, different perspective, Disturbance, dives, doors, doubts, east, ecmwf, Energy, epo, ey, forecast, forecast area, forecaster, forecasters, game, games, gfs, greenland, guidance, interaction, lifting, low, lows, map, maps, mid, Mid Atlantic, Model Guidance, models, moderation, nao, north, Northeast, northeastern connecticut, nuetral, Philadelphia, pv, Rain, Ridge, s, shortwave, shortwaves, snowfall, snowfall amounts, south, south storm, storm track, storms, surface maps, surfaces, surprise, systems, Trough, ukmet, weeke, west, wills, Winter. Technical Discussions 1 Comment

A Very Icy Night Setting Up Away From The Coast

January 6th, 2009 by Steven DiMartino

7:48 PM
Right now, if you are along the immediate coast, your snow and ice worries are all but over. The strengthening warm air advection off the Atlantic supported by the developing 850 MB low over the Tennessee and Ohio Valley has warmed the majority of the atmosphere above freezing, thus producing all rain for coastal [...]

Tags: advection, area, Atlantic, atmosphere, cad, coast, coastal connecticut, cold, cold air, Connecticut, continuation, eastern Pennsylvania, england, forecast, forecast area, forecaster, freezing rain, high, Hudson Valley, ice, isentropic, lifting, Long Island, low, lows, Mississippi, Mississippi Valley, New England, Northeast, Ohio, Pennsylvania, plains, precipitation, pva, Rain, s, sleet, snow, snow and ice, Southwest, temperature, temperatures, Tennessee, valleys, warm, warm air advection, wills, worries. Technical Discussions Add a comment

Active Winter Weather To Continue

January 5th, 2009 by Steven DiMartino

9:58 AM
The pattern will continue to amplify towards the end of the week and into the weekend. I want to touch on some points about the overall pattern first before discussion the forecast.
There is some discussion that the pattern appears to be like a return to mid December with a raging postive NAO. This is [...]

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Threat Discussion For Tuesday Night And Wednesday Morning

January 4th, 2009 by Steven DiMartino

7:30 PM
Tonight I want to focus on the increasing threat for heavy rain and significant icing for the forecast area.
As seen on the map above, the majority of the forecast area will have mostly rain to contend with by the Wednesday morning rush hour. A total of 1 to 2 inches of heavy rain will [...]

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The January Outlook

January 1st, 2009 by Steven DiMartino

7:40 PM
December has come and gone along with all the holiday cheer, it’s time to look to see what the rest of January holds for the forecast area. Will the negative NAO be a major factor? Will the Pacific get back into the game or will January be a warm and boring month?
The basic idea [...]

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New Year’s Eve Snow And The Developing Cold And Stormy Pattern

December 29th, 2008 by Steven DiMartino

7:26 AM
The negative NAO pattern is well on the way of developing and the first clipper that will impact the forecast area will help to enhance the 50/50 low that will be a major player in the later pattern. First though, let’s discuss the next three days.
High pressure will slide through the forecast area today [...]

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