NAM/GFS/ECMWF surface low position comparisons
Notes:
The data on this slide shows relative surface low position forecasts from the NAM (brown), ECMWF (blue) and GFS (green), all valid at 06z on the 7th. This series of slides shows that the NAM was initially farther west with the system, indicating a warmer solution with more rain than snow across central New York and especially northeast Pennsylvania. The ECMWF and GFS were more consistently along or just off the east coast with the surface low center, which turned out to be correct, although both of those models were a little too weak and too fast with moving the low up the coast.
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Slide 23