Weather for the weekend of 14 - 15 January 2012

Updated 13/1/12

A high is moving slowly through the Bight but is not expected to ridge up the east coast. Slack pressure dominates the north of the continent and will do so throughout the weekend. A trough will remain in the far west of Queensland and a second trough will form off the coast during Sunday.

Rainfall through the Downs has generally been light, with most falls occurring at the far end of the last week. Heavier falls occurred towards Taroom and Goondiwindi.

A strong jet stream (about 100kts) is sweeping moisture from ex-tropical cyclone Heidi into south east Queensland and this is forecast to increase the cloud and rainfall on the Downs over yesterdays predictions. Up to 10mm is now forecast for Saturday (with the possibility of this including thunderstorms)  and up to 6mm on Sunday.

Saturday 14 January 2012
Dalby           27C
Stability        A
Convection    Dry convection to 9,000ft with cloud base 6,500ft
Wind             NE @ 5 kts

Cloud cover will build during the morning, becoming extensive by midday. From around midday thunderstorms are possible (CAPE 400J/kg and SLI -2C) but thundery showers are more likely.


Sunday 15 January 2012
Dalby           27C
Stability        A
Convection    Dry convection to 8,500ft with cloud base 6,000ft
Wind             ESE @ 10 kts

Cloud cover will be extensive throughout the day with periods of rain.