Snow will be likely Friday but the big question earlier in the week was just how much would we see. Meteorologists use many different tools to help them forecast and one of those tools are computer weather models. The images on the left are snap shots of the NAM (North American Mesoscale) model and the GFS (Global Forecast System). Both are showing the same time frame, Friday at noon. But notice how the NAM doesn't have any precipitation over the Stateline while the GFS does. So why is that? Even though there are several different types of weather models out there, they all don't use the same parameters. In this case, the NAM is taking into account the east wind and dry air and how that will have an impact on the snow accumulation. The GFS, however, isn't factoring that in as much and wants to bring the snow further northward. Sometimes the GFS has a tendancy to "overdue" precipitation amounts a little and while I do think we will see snow Friday, the bulk of it will stay to the south with 3"- 6" south of I-88. For us - wouldn't be surprised if we picked up 1"- 3" with lighter amounts to the north. Of course, if we see any deviation in the current track of the system that could yield a different outcome for us. But as of right now, it doesn't look like we should see anymore than 3" by Saturday morning.
Snow will be likely Friday but the big question earlier in the week was just how much would we see. Meteorologists use many different tools to help them forecast and one of those tools are computer weather models. The images on the left are snap shots of the NAM (North American Mesoscale) model and the GFS (Global Forecast System). Both are showing the same time frame, Friday at noon. But notice how the NAM doesn't have any precipitation over the Stateline while the GFS does. So why is that? Even though there are several different types of weather models out there, they all don't use the same parameters. In this case, the NAM is taking into account the east wind and dry air and how that will have an impact on the snow accumulation. The GFS, however, isn't factoring that in as much and wants to bring the snow further northward. Sometimes the GFS has a tendancy to "overdue" precipitation amounts a little and while I do think we will see snow Friday, the bulk of it will stay to the south with 3"- 6" south of I-88. For us - wouldn't be surprised if we picked up 1"- 3" with lighter amounts to the north. Of course, if we see any deviation in the current track of the system that could yield a different outcome for us. But as of right now, it doesn't look like we should see anymore than 3" by Saturday morning.
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