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Next plot is a preliminary plot, from the US, for the greater NYC area, showing post event snow depths in inches. For reference Long Island, east of the city, is the island in the lower right.
The plots below show the evolution of the jet stream and MSLP from 19 to 24 January.
The development of the cyclone seems to be connected to a wave train triggered by a baroclinic wave six days before in the western North Pacific as we can seen from the Hovemoeller diagram for Z500 anomalies.
3.1 Data assimilation
3.2 HRES
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