Easing swells are expected for the rest of the week.
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We’ve got a weak, troughy pattern unfolding now adjacent to the NSW Coast in the near Tasman Sea that will provide plenty of wind changes this week. A low pressure system near the South Island reached maximum strength last night and is now slowly easing, but still looking good on ASCAT (satellite windspeed) passes with S’ly strong winds to gales aimed up the Tasman pipe.
As mentioned on Wed the weekend’s front forms a low which looks to stall in the central/eastern Tasman Sun/Mon, and possibly linger near the South Island after that. The fetch now, isn’t quite so well aimed back at the East Coast but we’re still on track for a nice pulse of S-S/SE swell.
Improved outlook for next week as the weekends front stalls around a trough line in the central/eastern lower Tasman and forms a compact low, possibly even retrograding NW.
Another large high (1034hPa) is currently moving offshore from Southern NSW into the Tasman, with a long, NW-SE angled trough now moving offshore and towards the North Islands. The remnants of a low/front near the South Island are lingering near the South Island through the short term with the next frontal system expected late this week. No major swell sources on the radar so lets look at a few bits and pieces on offer this week.
Sat still looks the best day of the weekend as a trough and front terminating in a compact low approach from the W.
A massive high (1035 hPa) is currently moving over temperate NSW into the Tasman Sea, with a SE surge extending up the sub-tropical to tropical Eastern Seaboard, and a more N’ly flow south of Seal Rocks. In the wake of a strong front earlier this week we have still have moderate S swell trains propagating through the Tasman Sea which will be our main swell source through the short term.
We’ve got a classic winter, stratified pattern with a high pressure belt over the continent, extending out into the Tasman Sea and a robust W’ly storm track below the maritime continent. We’ll see frontal intrusion into the Tasman early this week, with a small front passing into the Tasman today and a stronger system following behind it tomorrow- generating more pulses of S swell mid week.
A trough and cold front are being rapidly shunted southwards by a blocking high which is moving NE into the sub-tropical Tasman and weakening. The current swell sources are all drying up leaving us with small background swells.
A powerful front has passed through the Tasman, creating our current S’ly groundswell. A more compact but even stronger storm is right behind it, reaching peak strength halfway across the lower Tasman before slamming into the South Island.