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<\/a><\/p>\nA front slides into the region Friday and slows down, allowing a few storm systems to ride along it. The first one moves in with rain Friday night and Saturday with rain. The second system has more cold air to work with and produces rain and the chance for some snow by Monday.<\/p>\n
The GFS and the Euro are the strongest with the Monday system and has a period of snow showing up. Here’s a look at both systems…<\/p>\n
EURO<\/p>\n The Canadian isn’t as wrapped up with the second storm…<\/p>\n After that goes through, temps bounce back for a day or two ahead of what’s likely to be an arctic front later next week. The Barney colors are aimed at us…<\/p>\n You can also see the next shot showing up behind that in Canada, poised to drop into the country.<\/p>\n If we look the various indices, we find a very blocky look still showing up. Let’s start with the Arctic Oscillation (AO). When it\u2019s in a negative phase, it means we have some blocking going up in the arctic region. The EURO Ensembles average is the green line and the Control Run is the blue line. Both have the AO going negative over the next few weeks, indicating cold returning to the eastern US\u2026<\/p>\n The North Atlantic Oscillation (NAO) is for the area around Greenland. When it\u2019s in a negative phase, that indicates blocking and is a cold signal for the eastern US. Thise same two week period is also negative\u2026<\/p>\n The Eastern Pacific Oscillation (EPO) also is a good indicator for cold in the eastern half of the country when it\u2019s in a negative phase. This would essentially be a ridge over Alaska. The Euro Ensembles have a -EPO developing and holding…<\/p>\n The Pacific-North American Oscillation (PNA) gives us a view of the west coast. A positive PNA is a ridge in the west and is a good indicator of cold and a trough going into the eastern US. Say hello to a +PNA…<\/p>\n If we extend this out through the third week of March via the EURO WEEKLIES… Wow. The Weeklies have a strongly -AO through the entire time…<\/p>\n The same goes for a -NAO…<\/p>\n The EPO in the mean is also negative the entire time…<\/p>\n The PNA is mainly positive, too…<\/p>\n With indices all pointing toward major, prolonged blocking, of course the EURO WEEKLIES show deep troughs across much of the US, especially the east, during this time period.<\/p>\n This animation starts February 11th and goes through the 29th…<\/p>\n The setup from March 1st through March 22 shows no change…<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n