For Alton Water Reservoir : No gale warning.
The reliability of the situation is very good.
Skies changeable becoming cloudier in late morning. No precipitation in the morning, possibility of showers in the afternoon.
In the evening, good clear periods but lots of cloud, too. No precipitation. N force 3 in the morning temporarily W force 2 in the middle of the day. Gusts reaching 16 knots in the middle of the day. Excellent visibility.