Friday 9 a.m.
Here is my morning video showing how the weekend should turn out. As a special treat, you can watch the maps without having to see me!
This map shows the effects of a large upper air high pressure area that is building in the middle of the country. Such a system will create a flow from the northwest over the eastern Great Lakes and Northeast. That is why it should be dry this weekend with low humidity.
However, out in the Plains where low-level hot air is shooting northward, showers and thunderstorms will breaking out where the hot air interacts with cooler air to the north. Once those thunderstorms develop, they will ride southeastward early next week, raising the likelihood of thunderstorms over parts of the Northeast.
In yesterday's report I made an analogy about predicting snow amounts using our 16 year old American Eskimo dog Sam as an example. I told Sam about it before taking this picture, but he just looked at me.
This map shows the pressure pattern around the big storm that some people in Boston and Providence are comparing with the Blizzard of '78.
In the worst-hit areas, plan for travel bans (for all non-emergency activities) because of impassable roads and extremely poor visibility. This map shows our projection for snow accumulations by early Wednesday. In many areas the heaviest snow should fall overnight and tomorrow morning.
In the worst-hit areas, plan for travel bans (for all non-emergency activities) because of impassable roads and extremely poor visibility. If you get stranded, rescue crews may not be able to reach you. Storms like this sometimes generate thunderstorms within the heaviest snow bands. The map shows predicted snow accumulations by early Wednesday.
It appears likely that many normal activities can go on through the day Monday, as long as the typical cautions for light to moderate snowfalls are observed. Tuesday will be an <strong>entirely different story</strong>. This map shows the GFS- predicted snowfall through 7 P.M. ET Monday:
The second storm we have been talking about will affect the Middle Atlantic region late Sunday and Sunday night. This GFS forecast map is for 7PM ET Sunday and shows precipitation amounts for the 6 hours up to that time.