Meteorology · Tropical Cyclones — Formation
Tropical cyclones require, among other conditions, sea-surface temperatures of at least about:
- A10°C (50°F)
- B5°C (41°F)
- C26.5°C (80°F)✓ Correct
- D35°C (95°F)
Explanation
Warm water of roughly 26.5°C (80°F) to sufficient depth supplies the heat and moisture for tropical cyclone development, along with sufficient Coriolis force (away from the equator), moist mid-levels, and low vertical wind shear.
Authority: NOAA NHC; Bowditch (Pub. No. 9)
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