Forecast issued at 4:30 am EST on Thursday 29 January 2015.
A surface trough extends over the interior of the state and will likely remain slow moving until late in the week. A weakening ridge will persist along the southern Queensland coast during Thursday and Friday. An upper trough over the southern interior today before shifting northeast into central districts on Thursday and Friday.
Forecast for the rest of Thursday
A slight to medium chance of showers and storms extending from central districts and into the eastern and northern tropics, increasing to a high chance over the far northern Peninsula. Fine and mostly sunny conditions through the remaining west. A slight chance of shower about the southeast and through the Maranoa. Moderate to fresh northwesterly winds over the far northern tropics. Fresh south to southeasterly winds in the west and along the southern and Capricornia coasts. Light to moderate southeast to northeasterly winds elsewhere.
Friday 30 January
The upper trough will shift further northeast, while a weak surface trough will persist through the central and southern interior. A slight to medium chance of showers is expected over eastern districts north of about Gladstone and through central inland districts north of a line from Longreach to Emerald, extending into the tropical interior and through northern parts of the Peninsula. A slight to medium chance of storms through the central interior increasing to medium to high through the southeastern tropics and through the Peninsula and Torres Strait. Winds will tend more northerly along the southern coast so just the slight chance of showers is expected. Fine and sunny conditions will persist in the far west.
Saturday 31 January
The upper trough will most likely weaken as it shifts north into the tropics, though should result in a slight to medium chance of showers and storms. A new upper trough is expected to move through northeastern New South Wales, though fine conditions are expected over central and southeastern districts given a lack of moisture. Fine and sunny conditions will persist through the southern interior and far northwest.
Sunday 1 February
The upper trough will most likely contract off the southern coast on Sunday and a high in the Great Australian Bight should push dry air across much of central and southern Queensland. Fine and mostly sunny conditions are therefore expected over much of central and southern Queensland, just the slight chance of a late shower on the far southeast coast. Showers and thunderstorms should persist about the northern tropics where moisture will remain high.
Monday until Wednesday
Showers and storms will persist over the tropics during the outlook period, particularly areas north and west of Cairns. A new upper trough will most likely enter the southwest of the state late Monday or Tuesday, with shower and storm activity re-developing about the east coast in the onshore flow and extending to the eastern interior. The west of the state should remain fine and mostly sunny as dry air extends over the area from a high in the Tasman Sea.
The next routine forecast will be issued at 4:30 pm EST Thursday.