Patchy low to mid level cloud lies over much of the country's interior and north, thanks to plenty of tropical moisture and regions of lower pressure lingering in the region. Through South Australia, a large low pressure trough is enhancing this cloud activity, with thicker cloud and lightning activity present through the centre of the country. A large cold front passing over Tasmania is causing a patchy sheet of mid to upper level cloud to drift over much of the state, along with central and western parts of Victoria. Moist trade flow originating from the Coral Sea is driving scattered patches of thick low level cloud onto the Cape York Peninsula and much of Queensland's tropical coastline. Thick patches of low level cloud are sweeping over parts of the southwestern coastline, the result of a cold moist airmass being driven onshore by a high pressure ridge in the Indian Ocean. The rest of the country is mostly cloud free.