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Des Moines, Iowa – A rare Midwest earthquake early Tuesday is drawing increased attention across Iowa as a powerful surge of Arctic air drives temperatures sharply lower, creating conditions that could lead to frost quakes during the coldest overnight hours.
According to the U.S. Geological Survey, a 3.5 magnitude earthquake struck central Illinois shortly before 2 a.m. Tuesday, centered about 35 miles south of Springfield. The shallow quake was felt across a wide portion of Illinois, with thousands reporting shaking and loud rumbles before sunrise. While no damage was reported, seismic events of this size are uncommon in the central Midwest, making the timing notable as extreme cold tightens its grip across the region…