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Sydney's smoky Saturday

Drew Casper-Richardson, Saturday November 2, 2013 - 10:11 EDT

Sydneysiders awoke to smoky Saturday morning with northwest winds bringing the smoke in from fires in the Hawkesbury region.

A high pressure system allowed for light winds to combine with a moisture laden surface to also bring areas of fog to the Sydney basin. The smoke and fog dropped visibility down to 500m in parts of Sydney including Richmond. The smoke has lingered through the morning thanks to warmer temperatures aloft, creating an inversion, trapping the smoke and fog.

The good news is that as the day warms up the inversion will break down. This will allow for the smoke to mix into the atmosphere, bringing clearer skies this afternoon.

Once skies clear it will warm to around 28 degrees in the city with a sea breeze helping to keep it below 30. In the western suburbs it will reach the low-to-mid thirties.

There is chance that Sunday morning will be smoky again as winds will be light overnight. However, northwesterly winds will pick up early in the day, meaning that any smoke will clear much faster than Saturday. The increasing northwesterly winds are due to an approaching cold front. Northwest winds will be strong enough to hold off the sea breeze along the coast allowing it to reach around 34 degrees, the same as the western suburbs.

Relief will come during Sunday afternoon as a cold front sweeps through the basin bringing a welcome drop in temperatures and making for a more comfortable nights sleep. The front will also bring gusty winds, possibly reaching 80-90km/h along the coast. Strong winds will continue overnight on Sunday and into Monday morning, making for a gusty commute into work. It will only reach 20 degrees in the city on Monday and just a couple of degrees warmer in the west. The change will bring little-to-no rain to Sydney and the there no signs of significant falls until around Friday next week.

- Weatherzone

© Weatherzone 2013

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