The image at left provides some additional information about the high pressure system discussed below, adding station plots and radar echoes to the analysis. Wind barbs confirm the circulation of wind around the high pressure center over the Great Lakes. In particular, the wind barb over Portland, Maine confirms a northwesterly flow (i.e. wind coming FROM the northwest) over New England. Remember that wind barbs point in the direction the wind is coming from. They point INTO the wind, whereas the arrows in the post below point in the opposite direction (WITH the wind).It should be no surprise that it is so cool and clear today in Vermont. It's common knowledge that northerly winds bring in cool, dry air (i.e. continental polar air) from Canada.
The image above is updated hourly the Unisys website. It too can be accessed on the course website.
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