Read this passage from fema, the federal emergency management agency, about preparing for tornadoes. what do the details in this passage all have in common? be alert to changing weather conditions. look for approaching storms. look for the following danger signs: dark, often greenish sky large hail a large, dark, low-lying cloud (particularly if rotating) loud roar, similar to a freight train. if you see approaching storms or any of the danger signs, be prepared to take shelter immediately. they inform the reader what to do in case of a tornado they describe the weather signs of an approaching tornado they convince the reader that tornados are dangerous they persuade the reader to be ready for a tornado