Definition - What does Extra-tropical Cyclone mean?
An Extra-tropical Cyclone is a tropical storm that is created due to pressure difference between two areas. Cyclones do not occur in high-pressure areas; they occur in regions that are close to low-pressure areas and high-pressure area, where the pressure difference is large. This causes a system of winds which rotates inward to the area with low atmospheric pressure. Extra-tropical cyclones are usually characterized by high waves, thunders, storms, heavy to mild showers and tornadoes.
Petropedia explains Extra-tropical Cyclone
Extra-tropical cyclones produce high tides and great turbulence in the ocean. They are also known as mid-latitude cyclones because such intensity cyclones are mostly administered in the middle latitudes of the earth. At other times they are also referred to as large scale low pressure weather systems.
Considering the ferocity and catastrophe such cyclones can produce, an E&P organization ensures that when it is building its offshore wellhead platform and rigs they do not fall in the path of extra-tropical cyclones as they tend to only produce fatalities, loss of properties, damage to the environment in terms of oil spill, etc.