For Alton Water Reservoir : No gale warning.
The reliability of the situation is good.
Very cloudy skies. Becoming more changeable for a time in the morning. Risk of some spots of rain in the morning, possibility of showers in late afternoon.
In the evening, good clear periods but cloud building. Possibility of showers SW force 3 in the morning becoming force 2 in the evening. Gusts reaching 17 knots in the middle of the day. Visibility reduced by mist becoming excellent in the middle of the day then poor.