Wednesday, February 06, 2013

It has been a strange ride this past month. These are all temperature maps from The Weather Channel.

January 10, 2013
0615 AM EST

With all these wide swings in temperature changes came turbulence.

Winter is not suppose to be this unpredictable.
January 15, 2013
0734 AM EST

About a month ago the USA was covered in very cold weather. There has been movement of warm water vapor off what was the Intertropical Convergence Zone. The beginning saw only warm air to the southeast. 
January 29, 2013
0845 AM EST 

Of course, the difference between AM and PM is number of hours the sunshine may have warmed the air. But, the trend is fairly obvious. Right. The warm water vapor has been increasing. 


By the 29th more and more warm water vapor started to cover the country.


February 04, 2013
0845 PM EST

On February 4th there was a change in the distribution of warm water vapor. There is a reason for that.

I'll post some of the UNISYS satellites to illustrate. But, basically these was an odd air movement in the Pacific. I've never seen it before. And it is traveling in a northeast path from lower latitudes, so therefore it is warmer.
February 06, 2013
0645 PM EST

This is the heat distribution from that southern system. It is hot and it is encroaching on the cold air mass that has been across the continent.

What is more odd and notable is the current departure in the USA from normal temperatures. That is below.


BELOW: February 6, 2013
8:30 PM EST
UNISYS Water Vapor Satellite USA 

It is fairly obvious where the warm temperatures are coming from, namely the systems in the center of the country.


February 6, 2013
8:30 PM EST

BELOW: February 4, 2013
0430:19 z or February 3, 2013 @ 11:30 PM EST

Note the disturbance east of Hawaii. With a good imagination it looks like a cat face.


BELOW: February 4, 2013
1030:19z or February 5:30 AM EST


BELOW: February 4, 2013
1630:18z or February 4, 2013 @ 1130 AM EST


That heat center developed into a turbulent air center. It is hotter than the continent. It has moved into the center of the USA and has changed the air temperatures to extremes outside of normal. 

The point is this air mass is carrying its own heat. It is so much outside the norm that it is changing the air temperatures as it moves. It is not in a hurry really, but, as to whether there will a blizzard in the northeast; if this air mass moves to the northeast it will bring heat with it. I think it is fine to expect heavy snowfall, but, it could be more rain than snow, too. Higher elevations are more likely to receive heavy snowfall. But, as far as Boston goes, isn't the big snowfall over due? Right. Is it about time Boston got 'the big one' for the season. I am not convinced yet this is the big one though. I am sure local weather folks will figure it out and keep folks up to date.