Dialling In: Thurs, 29 July 2010.

29 Jul 2010 0

There's been some good waves around of late, but you might be hard pressed to find anything like this across the East Coast this weekend.

There's been some good waves around of late, but you might be hard pressed to find anything like this across the East Coast this weekend.

The West Coast or bust this weekend
It’s slim pickings across the majority of Australia’s coast this weekend. Small surf prevails across the NSW and Queensland coasts; generally ranging from one to two feet all weekend. Victoria fares slightly better. There should be some very small, clean waves across the Surf Coast on Saturday, backed up by a new swell on Sunday that will quickly become blown out by strong WSW winds.

The West Coast sees the best conditions of a fairly ordinary bunch. A mid range SW swell pushed up into the four to five foot range across the South West Coast on Saturday, combining with moderate onshore, SW winds. Both the swell and winds are associated with a series of relatively modest frontal lows traversing a short range storm track off the south-west of the continent on Thursday and Friday;

BOM 4 Day
Source: BOM. A high building across the West Coast sees SW winds easing into Saturday afternoon, going light ENE by Sunday morning.

This should see smaller, wind affected surf inside the bays and low quality surf across Perth’s Metro beaches in the one foot range on Saturday, improving into the afternoon as SW winds ease in strength, potentially swinging around to the SE into the afternoon.

The onshore flow dissipates under the influence of a high pressure system building across the West Coast throughout the day. The high moves away to the east on Sunday, resulting in much improved conditions across the region as winds swing light NE on Sunday morning.

click here for the West Australian detailed forecast.

It's worth making the most of thesmall ENE swell before it drops out to lower levels on Saturday.

It's worth making the most of thesmall ENE swell before it drops out to lower levels on Saturday.

Small ENE leftovers and background S swell across the East Coast
The East Coast sees leftover ENE windswell lingering around the two foot mark on Saturday morning ahead of a further drop into the one to two foot range by Sunday. The only saving grace is a light to moderate westerly flow prevailing across the entire region stretching from the Gold Coast down to the far South Coast.

The absence of any notable new swell is related to a broad zonal (west to east) flow becoming established across the Tasman in the wake of a low pressure trough drifting off the NSW coast on Thursday, followed by a stronger cold front moving out into the Tasman Sea on Saturday;

BOM wind
Source; Metervice. A cold front crossing the NSW coast on Saturday leads in a moderate to strong W flow across the Tasman. This, coupled with an absence of any long range swell sources sees the last of the ENE swell fading away throughout Saturday.

Tiny leftover ENE swell and light winds on Sunday
ENE windswell will be on its last legs by Sunday; probably amounting to a foot or so across exposed coasts under a strengthening WNW wind that will progressively flatten out the leftover energy into the afternoon;


BOM wind
Source; BOM. A strenghtening WNW flow flattens out the last of the ENE swell on Sunday.

The strengthening offshore flow is associated with a cold front approaching the South Coast from the west during the day. This should see winds swinging WSW behind the front during the afternoon. The good news is we’re likely to see a low subsequently developing off the NSW coast on Monday, giving rise to a new S swell event early next week; Click here to check the detailed Sydney to South Coast forecast. Click here for the detailed Queensland and northern NSW forecast.

Small clean surf across Victoria’s Surf Coast on Saturday
Victoria also sees very small, clean waves across the Surf Coast on Saturday. Low levels of SW swell should see two foot waves across the reefs under a strong WNW flow; increasing in strength ahead of a vigorous cold front projected to enter western Bass Strait on Saturday evening;

BOM width="570" ALT="GFS">
Source; BOM. A cold front approaching Bass Strait causes WNW winds to ramp up to 25 to 35 knots across Victorian coasts on Saturday afternoon.

By Sunday we’re likely to see a building trend in short range SW swell underway across all coasts; the by-product of a frontal low developing beneath the Bight on Saturday;

BOM
Source BOM. A frontal low developing beneath the Bight sets up a rising trend in short range SW swell on Sunday.

On Sunday morning WNW winds are likely to be verging on gale force across the region ahead of a SW change during the day. The strength and direction of local winds will be heavily dependant on the evolution of this low so check Friday’s detailed forecast for an update. For more detail check the latest Victorian forecast here.

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