Shag Rock Weather Forecast

Upper West Coastal Waters

Wind

Variable about 10 knots becoming easterly 10 to 15 knots in the late evening.

Seas

Below 1 metre.

1st Swell

Southwesterly 3 metres, increasing to 3 to 4 metres south of Streaky Bay.

Weather

Mostly clear.

Weather Situation

A high pressure ridge over SA will move to the east early Friday, as a trough moves over the state during the day, followed by a strong cold front early Saturday. A high pressure system will then move across the state, behind the front, and merge with another high located to the southwest of WA on Sunday to extend a ridge across much of SA into next week. A low pressure system is also expected to move in vicinity of the WA border late Sunday and may extend a trough into far west SA into next week.