A high pressure system centred over the Tasman Sea extends a ridge over the eastern half of the country, directing patchy low level cloud and stream showers along much of the country's east coast and surrounding areas. Another high pressure centre directs a deck of low to mid level cloud over the south west coast of Western Australia. A patchy sheet of mid level cloud drifts over Tasmania well ahead of a cold front slowly making its way through the Southern Ocean. This cold front is generating a thick band low of low to mid level cloud to sweeping over the Great Australian BIght, with a field of cold air and scattered low level cloud in its wake. Further north, wispy mid level cloud lingers over the Top End and Pilbara regions, the result of ambient tropical moisture in the upper atmosphere. The rest of the country is mostly cloud free.