Admiralty Sailing Directions dating to 1884 note 'Scarweather sands? The bank dries into separate patches; viz West Scarweather, the principal and lying near the middle, is about a mile in extent in an east and west direction, uncovers 6 feet at low water, with several patches awash extending half a mile westward of it. East and Middle Scarweather, at the eastern end, are small patches which show at low water. The ground immediately surrounding the bank is mostly fine sand, except near the north-eastern end, where it is mixed with stones and a ridge of 4 fathoms connects this shoal with those within. A heavy sea is generally breaking over it, and it is rendered more dangerous from the oblique set of the tide across. Buoys - West Scarweather is a conical buoy painted in red and white rings; it lies in 5 fathoms, NE 1 1/2 miles form the light vessel, and marks the western end of the sands....'

Source include:
Admiralty; 1884, Sailing Directions for the Bristol Channel, 4th Ed, pg113-5

Maritime Officer, RCAHMW, September 2014.