- Cloud boundary on convergence zone of weakening line of showers
- W874211S
- A poorly organized lowering is the focal point for ongoing updrafts at the back of a weakening line of showers. All the air at left rises on approach to the boundary, while all the air at right descends with the rain. A long roll cloud tube sits in the weak lift where southerly winds meet the rain curtain along a convergence zone. The sloped boundary is drifting slowly to the left.
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