The Nature of Autumnal Storms in the Great Lakes States

–submitted by Larry Larrabee; photo by Loretta Himmelsbach

martin-jon-11-2-16With the enthusiasm of Jim Cantore of The Weather Channel, Professor Jonathan Martin informed and entertained us regarding the unusually severe nature of November storms in the Great Lake States region.  He is a member of the faculty of the Department of Atmospheric and Oceanic Sciences at the University of Wisconsin and nationally recognized for his studies of mid-latitude atmospheric dynamics.

As Professor Martin informed us, UW is the birthplace of satellite meteorology and he was able to share with us numerous satellite images of past storms as they progressed through the Midwestern States.

He began his presentation by providing the physics behind hurricanes and cyclones as they travel across the world, divided north and south by the tropical weather pattern that flows in the opposite direction, east to west.

In his individual description of five specific November storms between 1911 and 2010 he illustrated the uniqueness of these weather phenomena and how the extremes of temperature differences and low barometric pressures contribute most significantly to the relatively high winds associated with these particular inland storms.

For instance, the November 11, 1911 storm contributed that day to Janesville, WI experiencing a daytime high of 70 followed with an overnight low of 20 with a 35-degree drop in just one-hour.  The community also experienced that day an F4 tornado and six inches of snow that evening.

The other storms described had their extremes as well.  In 1975, the Edmund Fitzgerald was sunk in Lake Superior as it succumbed to 80-foot waves and on October 26, 2010 the lowest barometric pressure ever recorded on Earth was recorded in Northern Wisconsin.

Professor Martin’s enthusiastic delivery and our in-born fascination with weather and it’s extremes made for an informative and enjoyable program.

If you missed our meeting this week, click to watch the video.

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