Blocking: When high pressure systems downstream (in the path of) of a storm act like a wall and block off the ability of a storm to move in its usual direction, the high pressure system is referred to as ‘blocking’ since it blocks the path of the low. Lots of blocking, especially near Greenland, usually results in longer storms that dump more precipitation.


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Reliably hype-free weather info for Western Maine and New Hampshire from amateur forecaster Jack Sillin

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