Weather It Is (The Weather Is Changing)

Good Evening:

The eastern US has seen numerous storms this winter.  However, tt was pointed out to me that these storms move out into the western Atlantic where they have grown (and merged) to create almost a super storm in the eastern Atlantic.   You can see (surface and 850 maps) that the low pressure wind pattern covers a large area and can understand how a normal trip of 10 hours across the Atlantic takes only 9 hours now (but you pay the same amount).

What is really interesting is that this large scale circulation pattern will break down during the next 10 days and a trough will build in the eastern Mediterranean.  This will follow our next important (although smaller scale) rain event that should arrive about Shabbat.

The first storm will be a forerunner for continued changes in the circulation pattern, and actually low pressure may develop at the end of the 10 day period and provide an even more important rain.  You might also note that the 850 mb trough is building a connection to a developing cold air vortex over northern Siberia.  The merger of this trough with the passing trough may eventually lead to a much colder and even more significant weather event near the end of this month (February).

Barry Lynn

Surface Pressure Pattern Now

850 mb Heights

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Surface Map 10 days hence

850 mb 10 days hence