Hail Storm Hill, also known as Cowpe Moss, is the highest point of the Rossendale Valley, England, an area of moorland and hill country situated between the West Pennine Moors and the South Pennines.

It is wholly within Lancashire, although the administrative county boundary with the Metropolitan Borough of Rochdale passes just a kilometre to the south-east of the summit.

Scout Moor Wind Farm now spans Hail Storm Hill.

The shortest route to the summit is from the village of Cowpe just to the north, a journey of just over two miles (3 km) there and back that involves about 600 feet (180 m) of climb.

Another option is from the road summit of the A680 at Turf Moor to the south-west, 3.5 miles (5.6 km) long with 500 feet (150 m) of climb.