For Great Wall :
No gale warning.
The reliability of the situation is very good.
Cloud and sun in the morning, very cloudy with possibility of thunder storms in the afternoon. Risk of showers in the morning, showers late in the day. In the evening, overcast skies with risk of thundery outbreaks.
Light showers. SW force 2 turning N in the middle of the day then ESE force 1. Gusts reaching 9 knots in the middle of the day. Slight sea. Low, short swell from NE. Visibility reduced by mist becoming poor in the middle of the day then reduced by mist.