22 February 2010
The long range numerical weather prediction models continue to show wild run to run swings regarding the possible next winter storm to pound the Eastern USA. There is little doubt that something is coming, but the track and the amount of cold air is still very questionable.
Here is an example of the differences. The picture below is from the DGEX. It’s a long range model run this afternoon and the forecast you see is for Tuesday morning. It indicates a real heavy snowstorm developing and heading up the East Coast. This is the worst case scenario.
The Morning model run from the NOAA Global Forecast System (GFS) Model is much different than yesterday. It does not phase the northern branch of the jet stream and has a much weaker storm further south.