pockets of methane in the open air rapidly dissipate. Moreover, if a fragment of an icy comet were to strike the Earth, the most likely outcome, due to the low tensile strength of such bodies, would be for it to disintegrate in the upper atmosphere, leading to an air burst explosion analogous to that of the Tunguska event. The specific choice of Biela's Comet does not match with the dates in question, as the 6-year period of the comet's orbit did not intersect that of the Earth until 1872, one full year after the fire, when a large meteor shower was indeed observed. A common cause for the fires in the Midwest in late 1871 is that the area had suffered through a tinder-dry summer, so that winds from the front that moved in that evening were capable of generating rapidly expanding blazes from available ignition sources, which were plentiful in the region. Related events On that hot, dry, and windy autumn day, three other major fires occurred along the shores of Lake Michigan at the same time as the Great Chicago Fire. Some to the north, the Peshtigo Fire consumed the town of Peshtigo, Wisconsin, along with a dozen other villages. It killed 1,200 to 2,500 people and charred approximately 1.5 million acres (6,000 km2). The Peshtigo Fire remains the deadliest in American history but the remoteness of the region meant it was little noticed at the time, due to the fact that one of the first things that burned were the telegraph lines to Green Bay. Across the lake to the east, the town of Holland, Michigan, and other nearby areas burned to the ground. Some to the north of Holland, the lumbering community of Manistee also went up in flames in what became known as the Great Michigan Fire. Farther east, along the shore of Lake Huron, the Port Huron Fire swept through Port Huron, Michigan and much of Michigan's "Thumb". On October 9, 1871, a fire swept through the city of Urbana, Illinois, south of Chicago, destroying portions of its downtown area. Windsor, Ontario, likewise burned on October 12. The city of Singapore, Michigan, provided a large portion of the lumber to rebuild Chicago. As a result, the area was so heavily deforested that the land deteriorated into barren sand dunes that buried the town, and the town had to be abandoned. In popular culture The