- Multi-layered shelf cloud, severe storm tiered Arcus
- W941098Z
- Severe storm cloud evolution, 6 of 6. A multi-layered cloud structure forms as the parent storm moves away to the right, leaving behind drier southwest winds and a deep cold pool. The dry gust front has become a tiered Arcus or shelf cloud but its forward momentum is slowing as the dense, cold air moderates. This allows the dry air to evaporate the cloud line and make it gradually narrower. (Series starts with W941041S.)
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