Forecast issued at 4:30 pm CDT on Monday 22 December 2014.
A broad trough of low pressure over the State will move slowly northeastwards, reaching the far northeast of the State this evening, where it will remain near stationary until Friday. A ridge of high pressure will extend across the Bight until a front moves over south of the State on Thursday.
Forecast for the rest of Monday
A medium chance of showers and possible thunderstorms over the agricultural area, clearing from Eyre Peninsula in the evening. A slight chance of showers about the west coast. A chance of showers and thunderstorms over the remainder, more likely near the northern border between Pukatja and Oodnadatta with local heavy falls. Hot to very hot in the northeast with moderate northeast to northwesterly winds, mild to warm elsewhere with mainly moderate to fresh southwest to southeasterly winds.
Tuesday 23 December
The slight chance of showers and thunderstorms northeast of Pukatja to Lameroo, contracting northeastwards to be northeast of Marree late evening. The slight chance of morning showers over the agricultural area and Nullarbor Plain, more likely about central and southern coasts. Mild, grading to hot in the northeast with moderate to fresh southwest to southerly winds, tending northeast to northwesterly in the far northeast.
Wednesday 24 December
The slight chance of showers and thunderstorms northeast of Marree. The slight chance of morning showers about southern coasts and ranges and western coasts. Mild in the south, grading to hot in the far northeast with light to moderate southwest to southerly winds, fresh about the coasts in the afternoon.
Thursday 25 December
The slight chance of showers and thunderstorms northeast of Moomba. The slight chance of showers about southern coasts from late morning, extending over the southern agricultural area during the afternoon and evening and becoming more likely near southern coasts. Cool in the south, grading to hot in the far northeast. Moderate to fresh southwest to southerly winds.
Friday 26 December
The slight chance of showers near the coasts Friday, mainly in the morning. Cool near southern coasts, grading to hot in the far northeast. Moderate southwest to southeast winds, fresh about the coasts in the afternoon. Cumulative rainfall totals to midnight Friday are expected to be 1 to 5 mm. Local falls of 5 to 15 mm with thunderstorms, possibly reaching 15 to 25 mm about the northern border tonight.
Saturday until Monday
Fine apart from a slight chance of showers and thunderstorms in the far northeast. Mild in the south, grading to hot in the north, then becoming warm to very hot on Monday.
The next routine forecast will be issued at 5:30 am CDT Tuesday.