- Rain-free base with vaulted appearance under a thunderstorm cloud
- W002686S
- Under a thunderstorm cloud. A rain-free base extending south from a storm at lower left is passing overhead. Outflow is pushing it forward so the lowest parts are ahead of higher parts, giving it a tilted or vaulted appearance. Outflow and inflow converge below this axis, rise and condense, and form towers which move along it to merge with the storm.
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