Following the record heat of recent days with the 80-degree mark being reached at Baltimore and Washington DC (15 above norm), we will see highs stuck in the 40s with a threat of the first flakes flying this weekend.

Shock to the system this weekend and not just in the East…

We could go from 15-20 above to nearly 30 below normal this weekend over the Appalachians along with heavy snow.

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The GFS remains weaker and further north than the ECMWF with the upper feature. Two waves of energy push through Friday into Saturday. It’s the 2nd feature which could bring a rain-snow mix into Boston, NYC, Philly, Baltimore and DC.

Check out the latest ECMWF ‘snow on the ground’ chart through 96 hours. Impressive! Notice the big snows Out West too with a storm finally bringing moisture down into central California.

3-6 inches likely for the mountains west of DC-Baltimore.

Notice north coast Maine gets hit hard but model has foot plus into New Brunswick.

Accumulating snow all the way to the Georgia mountains with 6 inches possible western NC.

California’s Sierra now getting in on the action too as a storm system brings much needed liquid into central CA, perhaps reaching LA in the form of showers.

This deep trough with arctic origin air leaves as fast as it arrives but this I don’t buy for later down the road off the CFSv2! Nonsense just like it’s longer range…

November could be a wild month.

AO is suppose to be going positive which would help build source region cold but there’s hints of warming now within the stratosphere which begs the question.. do we have a major arctic blast coming in the next few weeks?

Have you seen the vast INCREASE in Siberian snow cover this month? It’s at record levels.

Siberian snow cover plays a key role to Europe and North America as it delivers THEE coldest air if you get the right setup and that right set up looks likely this upcoming winter. It’s believed that bigger Siberian snow pack in Oct leads to more of a -AO winter and greater chance of seeing sudden stratospheric warming events which delivers Siberian air into the Lower 48 via cross polar flows.

See video for discussion.

US WINTER FORECAST 2014-15 COMES OUT THIS SATURDAY!

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