In a Cold Air Development reports of thunderstorms, rain and hail showers are common during the whole life cycle the end of the developing stages the whole life cycle . With the maturing from a Comma to CAD the wind tends to weaken strengthen strengthen .

In the various stages of development, the Comma head tail tail is more weather active with heavy convective stratiformic convective development due to a PVA maximum in the left exit left entrance left exit region of a jet streak.

Convective cells mostly develop within the Comma head tail tail and move to the head tail head where they in the ending stage dissipate enhance to thunderstorms dissipate .

In one of the latest stages of development different conveyor belts jet streaks conveyor belts are situated on top of each other and a Cold Front Cold Conveyor Belt Cold Front develops.

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