Definitions

Question 1

What is Vertical Visibility?

Answer 1

Vertical Visibility (VV) is used instead of cloud in the TAF when smoke is obscuring the sky

Question 2

What is CAVOK?

Answer 2

CAVOK (Cloud and Visibility OK) means:
- Visibility 10km or more
- No cloud below 5,000 feet or below the highest 25 nautical mile MSA whichever is higher
- No Cumulonimbus at any height
- No weather of significance