Major East Coast Storm Monday into Tuesday

In this article, I'll be showing you the GFS, EURO and NAM models. I want you to be able to compare each image so you understand why it's so hard to forecast. 

First up is the GFS 

Let's focus on Eastern Pennsylvania. Areas North of Interstate 80 would receive a plowable snowfall if this image were to verify. Areas south of I-80 would see much less snow. The difference in snow amounts is due to sleet and freezing rain. Areas from Schuylkill County and points south would be in the mixing zone. 

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Next up is the NAM

Again, lets focus on Eastern PA. The storm track is further to the East on this run. So if this image were to verify, we would all see mainly snow from this storm.

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Next up is the EURO

The storm is further to the West on this run. It disagrees with the NAM's "all snow" event. This would bring heavier snows to Western PA while Eastern PA is stuck dealing with freezing rain and even plain rain. We would all start out as snow, but gradually change to sleet, freezing rain and finishing off with plain rain Tuesday evening. 

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It's still too early to pinpoint timing with this storm. Some models say it will start in the afternoon on Monday. While other models say it will start after dark Monday. Either way, once it gets started, it's gonna get ugly. Hopefully this article helped you understand why forecasting is so hard. If the models don't agree, it's hard for prognosticators to come up with a final call. 

Stay tuned as I keep you ahead of the storm. If you're not already a member, please join Fall-Winter Weather Discussion on Facebook!