Another powerful low tracking into the Far Southern Tasman- this time at potential storm force- sends more uncommonly long period S swell up the NSW Coast (although better aimed up the Tasman Sea pipe towards Fiji). With swell periods potentially  in the 19-20 second band there’ll be some real juice in the swell.

Much stronger frontal activity in the Far Southern Tasman tied to a deep, slow moving low will provide long period S’ly groundswell pulses next week, although winds are looking very tricky around a weak, troughy pattern. 

The high initially weakens with a lighter onshore flow before re-strengthening as it approaches New Zealand and has the pressure gradient tightened on the western flank by the complex trough systems. That will produce a N’ly flow, expected to increase as the week goes on with increasing NE windswell late in the week and early weekend.

The deep Tasman low near the North Island has now dissipated and left the building with a small low in the Central/Southern Tasman supplying some S swell and an even smaller trough of low pressure off the Far North Coast. This pattern remains slow moving as large high slowly approaches from South of the Bight and multiple inland troughs supply unstable weather.