Meteorology · Fronts
A warm front is typically preceded by:
- AA narrow band of violent thunderstorms
- BSudden clearing and falling temperature
- CA broad sequence of stratiform clouds and steady, widespread precipitation✓ Correct
- DDense fog and no cloud at all
Explanation
A warm front's gentle slope lifts warm air gradually over the retreating cold air, producing a deep, ordered cloud sequence (cirrus, cirrostratus, altostratus, nimbostratus) and prolonged steady rain ahead of the front, followed by the milder warm sector.
Authority: Bowditch (Pub. No. 9)
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