- Streamlined, layered shelf cloud structure on a severe storm
- W930564S
- This gust front has a very streamlined, multiple layered shelf cloud structure along its forward edge. The line has a protrusion which is becoming an independent circulation as air converges and rises there preferentially. As the line advances, higher dewpoints enter the forward edge over time, gradually lowering the Arcus cloud base to form a wedge (see W930570S).
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