Meteorologists typically assign large low pressure systems to one of three types. 1. Tropical Cyclones 2.  Extratropical Cyclones 3.  Subtropical Cyclones A tropical cyclone is a warm-core, non-frontal low pressure system of synoptic scale that develops over tropical or subtropical oceans.  Tropical cyclones tend to have a more circular shape with spiral bands of showers … Continue reading Cyclone Types