BLOCKING IN PLACE...AND NOW THE 50-50 LOW! (please like and share) GFS run today is very interesting in a lot of ways. First off there are 2 potential events being indicated. The lead system for Thursday hinges on just how much room there will be. Remember the atmosphere is like an empty room you are furnishing. You can only fit so much. If you want to move a new piece in you have to take something out in order to make it fit and look right. The second system coming down looks like a powerhouse so timing will be critical to allow for room. The last map is the upper flow at 500mb for next Sunday. All the blocking measures are in place. Block in Greenland. Block in Alaska, split flow, and now lets introduce something new which is the 50-50 low. Look in the Atlantic Ocean off the east coast and you will see a low pressure system aloft at 50N and 50W. This low is very important and is part of the entire blocking feature. The low there allows some ridging off the east cast which lets storms come up the coast, however at the same time it prevents the ridge from getting so strong that lows wind up tracking up the west side of the Appalachians (snow lovers take note). How all these things interact with each other will determine ultimately what happens along the Eastern seaboard over the next 2 weeks.
Posted on: Sat, 08 Nov 2014 16:45:53 +0000
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