Eastern Tasmania Forecast by Craig Brokensha (issued Monday 15th September)

Best Days: Tuesday afternoon, Wednesday

Recap

Tiny waves over the weekend and then a small spike in S'ly swell today that should of build to 2-3ft at south facing breaks this afternoon but with onshores.

This week and weekend (Sep 16 - 21)

The weather system (deepening mid-latitude low) that's formed off our coast today is aiming a fetch of strong to gale-force S/SE winds towards us, producing a fun S/SE swell for tomorrow across the coast.

The low will move off this evening resulting in a drop in size, but a persistent fetch of E/SE winds wrapping around the lows southern flank should keep open beaches topped up with fun waves Wednesday.

Open beaches should ease from 3ft, with sets near 4ft expected at south facing locations early tomorrow, while Wednesday should be in the smaller 2-3ft range.

Winds should be light offshore tomorrow morning ahead of NE sea breezes, while Wednesday should offer W/NW tending SE winds.

A secondary similar low pressure system is due to move in Wednesday evening and produce a better fetch of S'ly gales through our swell window Thursday morning ahead of a secondary burst into the evening.

This should generate two pulses of S'ly swell, the first for Thursday to 3ft to occasionally 4ft at south facing locations with fresh to strong S/SW winds with a secondary better pulse Friday morning to 3-4ft+ with SW tending S'ly winds. Unfortunately open beaches will be the cleanest but miss most of the size.

Saturday will probably be the pick as the swell eases from the S/SE under morning offshore W'ly winds.

The swell will really fade away through Sunday under great NW winds, with nothing major on the cards at all after this. Check back here on Wednesday though for any adjustments to Thursday and Friday's swell and in the meantime enjoy the S/SE tending SE swell.