Jet Branches Unphased

A split jet stream has kept the weather very active around here this winter with the northerrn branch supplying the cold air and the southern branch, charged up by El Nino, supplying the moist storms.  Our biggest storms come when the two branches phase, or merge together.  Tonight, however, it looks like the two branches will remain split.  Low pressure approaching from the southern great lakes is tracking east with the northern branch, while a storm off the Carolina coast is moving east/northeast within the southern branch.  It looks like the two will phase well off the coast, after passing Maryland in the early morning hours.  But, even with the jet remaining unphased we should still  have enough lift to generate snow until just before dawn, producing 2-4″ of snow in most areas with the possibility of higher amounts in isolted areas.  Then next storm coming our way is forecast to arrive here late Friday and it looks like one where the northern and southern branches will phase over the middle of the U.S., perhaps sending a more powerful storm into the mid Atlantic states.  We shall see…

Tom Tasselmyer

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