For Great Wall :
No gale warning.
The reliability of the situation is very good.
Skies changeable to very cloudy. No precipitation in the morning, possibility of showers in late afternoon. In the evening, clear periods developing.
Possibility of showers N force 2 turning NE force 3 in the middle of the day then ENE. Gusts reaching 13 knots from the middle of the day. Slight sea. Low, short swell from NE. Excellent visibility becoming excellent in the middle of the day then reduced by mist.