Great Chicago Fire only of rain from July 4 to October 9, causing severe drought conditions before the fire, while strong southwest winds helped to carry flying embers toward the heart of the city. In 1871, the Chicago Fire Department had 185 firefighters with just 17 horse-drawn steam engines to protect the entire city. The initial response by the fire department was quick, but due to an error by the watchman, Matthias Schaffer, the firefighters were sent to the wrong place, allowing the fire to grow unchecked. An alarm sent from the area near the fire also failed to register at the courthouse
Great Michigan Fire was burned over by the Thumb Fire, which followed part of the same path of the 1871 fires. In the mid-1830s logging began in Michigan and grew into a significant industry. Michigan was extensively logged for the Eastern white pine, measuring tall and exceeding in diameter, along with the hardwood forests. By 1854, sixteen sawmills were in operation, producing over of lumber. These operations left behind branches, bark and quantities of unused wood. The fires of October 8, 1871, started after a long dry summer. Most areas had had no rain in months, making the dried-up vegetation and logging debris,