A front moving into the Tasman Tues then interacts with the low, causing a robust deepening of the low and a complex pattern as a trough spins off the low and moves north while a further trough of low pressure forms off to the south.

It’s an impressive fetch with severe gale to storm force winds in a wide band moving NE, only offset by winds being not perfectly aimed up the pipe.

As it does it aims up the fetch of E/NE winds into the NETas swell window and we’ll see increasing swells from the NE direction o/night and into Sat. 

These small lows may move north, then east and finally south or may coalesce in a more classic Tasman Low or ECL variant. Either way we should see some quality E/NE swell for Tas as the fetch draws out through the Tasman.