Submitted by Craig on Fri, 04/11/2014 - 13:39
South Australian Forecast (issued Friday 11th April)
Best Days: Tuesday morning, Wednesday
The surf wasn't as good as the start of the week yesterday, but light variable S'ly winds created fun lumpy waves across exposed spots with a small swell.
Today a deepening surface trough has moved in from the east and this has brought with it strong onshore winds and a junky windswell across the South Coast, with tiny bumpy waves on the Mid.
This weekend (Apr 12 - 13)
Give the surf a miss this weekend as we'll be looking at a poor and easing S'ly windswell tomorrow as today's trough moves off to the east and winds weaken. A small new S/SW groundswell is due on Sunday but winds will remain poor and moderate to fresh from the S'th.
Next week onwards (April 14th onwards)
Give Monday a miss as well, as we'll fall in between swells with a low point in wave activity due during the morning under persistent and fresh SE winds.
A new SW swell is due to arrive on Tuesday ahead of a secondary reinforcing S/SW pulse Wednesday afternoon as winds finally improve.
Tuesday's pulse will be generated by an unfavourably tracking mid-latitude frontal system pushing in from under WA tomorrow and then dipping east-southeast towards the polar shelf.
This should generate a medium sized SW groundswell that should offer 3ft sets at Middleton and bigger waves at Waits Tuesday, with 1ft+ sets on the Mid. Winds should clock around to the E/NE Tuesday morning, but we'll confirm this on Monday.
Wednesday's secondary pulse of S/SW groundswell will be produced by a secondary polar front firing up on the tail of the initial swell producing front, but to the south-southwest of the state.
This should generate a similar sized S/SW groundswell for Wednesday afternoon, peaking at 3ft to occasionally 4ft across most breaks down South under much more favourable N/NW winds. A late W'ly change may be seen, but we'll review this Monday.
The longer term outlook is finally coming together with a node of the Long Wave Trough expected to intensify across the South West of WA mid-late next week.
This should steer a series of broad and vigorous cold fronts up through our western and south-western swell windows during next week (illustrated right), generating at least one large pulse of SW groundswell for the Easter Long Weekend (Saturday and Sunday). Sit tight though and check back for an update on Monday regarding this swell.