Clear weather: 8 Â°C: 2 N: 60 % 08:00: Clear weather: 10 Â°C: 2 N: 62 % 11:00: Clear weather: 16 Â°C: 2 S: 47 % 14:00: Clear weather: 16 Â°C: 2 S: 51 % 17:00: Clear weather: 12 Â°C: 1 SW: 77 % 20:00: Clear weather: 11 Â°C: 1 NE: 59 % 23:00: Clear weather: 10 Â°C: 1 NE: 49 % Tuesday 09/01: 02:00: Clear weather: 10 Â°C: 1 NE: 43 % 05:00: Almost clear: 11 Â°C: 1 E: 43 % 08:00: Clear weather: 11 Â°C: 1 NW: 47 % 11:00: Clear weather: 16 Â°C: 2 S: 44 % 14:00: Clear weather: 16 Â°C: 2 S: 59 % 17:00: Clear weather: 12 Â°C: 1 SW: 81 % 20:00: Clear weather: 12 Â°C: 1 NE: 64 % 23:00: Clear weather: 11 Â°C: 2 NE: 55 % Wednesday 10/01: 02:00: Clear weather: 10 Â°C: 2 NE: 49 % 05:00
In cylindrica l folds the crest and trough lines are parallel. to the fold axis and to each other, but in conical folds the crest and trough lines are not. parallel. Crest and trough surfaces connect the crest and trough lines on successive. horizons.
The crest is the highest part of a of the wave and the trough is the lower part of the wave. The longitudinal waves move the medium parallel to the direction the wave is moving. Longitudinal waves have compressions and rare fractions.