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Tag Archive for 'arctic air'

More thoughts on Winter Storm Potential

– Weather When Posted –Temperature: 24°F;Humidity: 58%;Heat Index: 24°F;Wind Chill: 18°F;Pressure: 30.27 in.;

Bitter cold remains as storm exits

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 [...]

Very cold day on tap for northern Mid Atlantic

7:50 AM
In case you haven’t realized from the gusty winds from last night, Arctic air has arrived for the New York City and Philadelphia metropolitan areas.  Temperatures this morning are in the single digits and teens over many interior locations and mid to upper 10’s along the coast with a gusty northwesterly wind around 10 [...]

Cold front passage brings Arctic air back

7:30 AM
A cold front with an Arctic air mass behind the passage of the front is moving through the region this morning with scattered snow showers for much of the region.  The cold front is currently located in western Pennsylvania and will move east through the day.  Winds initially from the southwest will allow afternoon [...]

Cold front brings cold air back

7:08 AM
A cold front is approaching the Philadelphia and New York City metropolitan area this morning with snow showers for most locations as the front progresses to the east.  This cold front will move through the northern Mid Atlantic today with scattered rain and snow showers.  Temperatures this afternoon will peak in the lower 40’s [...]

MJO continues to throw off everyone

10:50 AM
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If anyone has doubts that medium and long range forecasting is a difficult task, take a look at what the MJO has done the past few days.  Yes, that lovely feature that helps drive the Sub Tropical Jet stream has produce a nice loop on itself, falling into a state of near non-influence [...]

Heavy rain expected along the coast on Sunday night

7:15 AM
Last night, the 00Z GFS produced a solution that has little support else where, but I wanted to discuss the viability and the inviability of this solution to put those who might worry for a major winter storm on Sunday night.
The water vapor this morning shows us two important features.  The first is the [...]

The Polar disturbance that is causing the model mayhem

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7:49 AM
Another run and more indecision on the model guidance on what to expect for the period of Sunday night through Monday.  What disturbance is causing these issues?  I have found the culprit and this feature is not going to be handled very well until late in the week at the earliest!
– Weather When [...]

Tricky forecast for this week, timing is everything

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7:45 AM
This week the warning that timing is everything could not be truer.  The movement of individual disturbances that are still over the Pacific will be key in determining exactly what type of storm is possible for next weekend.
– Weather When Posted –Temperature: 17°F;Humidity: 67%;Heat Index: 17°F;Wind Chill: 7°F;Pressure: 30.18 in.;

Light snow this morning then a quiet moderating period

6:38 AM
An area of low pressure is rapidly developing off the Delaware coast this morning and will continue to produce a light snowfall over much of the Philadelphia and New York City metropolitan areas.  The heaviest snowfall is expected to be along the immediate coast with most locations expecting 1 to 3 inches of snow. [...]



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