Capnomancy

Fire and smoke have been revered since the dawn of mankind. Many nations have foretold the rising smoke of the fire.
Dry wood is ignited and a lot of smoke is formed before the fire starts. If the smoke rises straight up, it is a sign of success.
If it first spills wide and then rises - things are a bit complicated, but later they will get better.
If, after rising straight, it begins to twist, it means an unexpected difficulty.
If the smoke just spreads and cannot rise, it means failure.
A sign of a recent marriage is when the smoke rises in two columns that merge above. If after the separation they separate - it means divorce.