A remarkably brief and extreme blast of cold air impacted the northeastern US on Saturday morning with air temperatures at a number of locations hitting values unseen for a number of decades. What grabbed the headlines though was the extreme conditions observed at the Mount Washington Observatory in New Hampshire. As the name implies, this weather station sits high atop a mountain. Early Saturday morning it reported a wind speed of 89 MPH and an air temperature of -47F, which computes to a -108F wind chill! The featured chart presents the top 10 wind chill reports from this site as computed by the IEM and you can see how Saturday's event dominates the top 10.

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