Forecast issued at 4:30 pm EST on Sunday 5 July 2015.
A high pressure system over southern Queensland is maintaining a weak along the east tropical coast. A new high pressure centre will develop across the south of the continent next week, extending a ridge into much of Queensland. Onshore winds will lead to some showers about the east coast, mostly in the tropics. The ridge will maintain a dry airmass through the interior throughout the forecast period, with cool mornings and some early frosts likely in the south of the state.
Forecast for the rest of Sunday
The slight chance to medium chance of showers about the east coast north of about Brisbane, increasing to a high chance about the north tropical coast. Fine and clear through the interior. Moderate to fresh southeasterly winds about the east coast. Light winds elsewhere.
Monday 6 July
Fine and mostly sunny over the interior and in the southeast of the state. Possible early frost patches over the southern interior, particularly on the Granite Belt. The slight to medium chance of showers about the east coast north of Fraser Island. Moderate to fresh southeasterly winds about the east coast north of Fraser Island. Moderate southwest to northwest winds over the south and southeast of the state. Moderate southerly winds in the west. Light winds elsewhere.
Tuesday 7 July
The new high will shift east into southeastern Australia and become slow moving while another high centre will develop over the far southern Tasman Sea. Fine and mostly sunny conditions will extend across much of the state, with just the slight chance of a shower near the northeast tropical coast in an onshore wind flow. Some early frost remains likely in the Darling Downs and Granite Belt district.
Wednesday 8 July
The high centres will shift further east, extending a firm ridge along the east coast of Queensland. A trough will move north from New South Wales into southern Queensland waters, with winds gradually tending more onshore and resulting in the slight chance of a shower near the southern Queensland coast. The slight chance of a shower will also persist about the northeast tropical coast. Fine and mostly sunny conditions will continue elsewhere. Some early frosts are likely over the southern and southeast interior.
Thursday 9 July
The high in the Tasman Sea should shift further east whilst maintaining a ridge along the east coast of Queensland. A trough will most likely enter the west of the state late in the day. A slight chance of showers persists about much of the east but showers are likely to increase about the southeast of the state as winds tend more easterly, increasing moisture about the southeast coast and southeast interior. Fine and mostly sunny conditions will continue elsewhere. Early frosts are only a slight chance in the southeast interior due to the increasing moisture.
Friday until Sunday
The high should shift further east across the Tasman Sea during the outlook period with the ridge along the east coast of Queensland gradually weakening. The trough in the west should move east across the state on Friday and should clear off the central and southern coast on Saturday, although there is some uncertainty regarding the timing of the trough clearance. The trough should generate some showers or thunderstorms with its passage, particularly over the southern interior and southeast of the state. A firm ridge should extend across much of Queensland on Sunday in the wake of the trough with fine and mostly sunny conditions returning to most parts.
The next routine forecast will be issued at 4:30 am EST Monday.