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Tag Archive for 'cold air mass'

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.;

As heavy snow threat grows, similarities in past storms become clear

9:42 AM
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Model guidance over the past 48 hours has moved towards growing strong support for a significant accumulating snow event with various time ranges of Friday afternoon through Sunday morning.  With the exception of the 00Z GFS and GFS Ensemble guidance, the overall set up for a major winter storm is as follows:
– Weather [...]

More thoughts on Friday’s threat

8:05 AM
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Up to this point, I’ve looked at a wide range of guidance for the event on Friday.  This morning I will share my initial thoughts and where I think the best potential for a heavy snowfall is possible.
– Weather When Posted –Temperature: 33°F;Humidity: 86%;Heat Index: 33°F;Wind Chill: 27°F;Pressure: 29.94 in.;

Timing key for snowfall end of this week

9:40 PM
This evening, my focus is not going to be on any particular model, but on the overall pattern that will set up for Thursday through Saturday morning.
The 500 MB pattern is not one that is atypical for a major winter storm for the northern Mid Atlantic.  Unlike normal winter storm 500 MB set up, [...]

Cold this weekend, slight moderate next week

9:00 AM
A very cold air mass has returned to the northern Mid Atlantic this morning, providing another cold weekend for the Philadelphia and New York City metropolitan area.  The water vapor satellite image this morning shows that the Sub Tropical jet stream is starting to gain strength once again, suggesting more interesting times ahead.
Now, the [...]

Pattern change or no pattern change, what is going on right now

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9:25 AM
There’s a lot to cover this morning.  My primary focus is going to be on the pattern relaxation and then amplification for the medium and long range, but I want to touch on the light snow event for tonight into tomorrow first.
– Weather When Posted –Temperature: 32°F;Humidity: 59%;Heat Index: 32°F;Wind Chill: 21°F;Pressure: 29.92 [...]

Flurries expected today, more organized snow on Friday

7:40 AM
A weak disturbance is moving through the Philadelphia and New York City metropolitan areas this morning with a few scattered snow flurries.  No accumulation is expected, however the snow showers will likely put a nice touch to the cold conditions in place right now.  Let’s be honest, what’s the point of it being cold [...]

There is more to this pattern than models suggest

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7:45 AM
An intensifying area of low pressure over the New England coastal waters will be moving towards the Gulf of Maine over the next 24 hours.  As the low pressure intensifies, the winds across the northern Mid Atlantic will increase.  By this afternoon I expect wind to range from 15 to 30 mph with [...]

The cold is on the way! Brutally cold conditions lasting through the week

7:15 AM
 
If you like cold air and a chance of snow each day, you are going to love the next several days if not this whole month!
The area of low pressure off the New England coast continues to rapidly deepen this morning.  Note the isobars on the surface map.  When these bars tighten like what [...]

Tranquil conditions today, but not for long

7:33 AM
As the area of low pressure that brought periods of heavy rain over much of the northern Mid Atlantic and ice over the interior exits into the Atlantic, high pressure is taking over.  It should be noted, that with this previous rain event, most locations are averaging one to two inches above normal in [...]



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