Something you don't normally see in Ohio is a "Shelf Cloud" or an Arcus Cloud. Last night, a squall line developed around 8PM and produced a fast-moving Arcus Cloud. They rarely produce any rain themselves. Its the massive Cumulonimbus Clouds behind the Arcus Cloud that contain the rain/hail/severe weather.
Arcus Cloud - Northwest View
Arcus Cloud #2
Arcus Cloud - West View
Mammatus Cloud - After Arcus Cloud Passage