Forecast issued at 5:00 am WST on Saturday 10 December 2016.
A high pressure system lies in the Bight. A deepening trough lies near the west coast and will move inland during Saturday before contracting further eastwards on Sunday. A middle level disturbance will move over southern parts of the State on Sunday and Monday before contracting eastwards on Tuesday.
Forecast for the rest of Saturday
Mostly sunny. Medium (40%) chance of showers and thunderstorms in the northeast during this afternoon and evening. Gusty winds possible with thunderstorms. Winds east to northeasterly 15 to 25 km/h shifting west to southwesterly 20 to 30 km/h in the afternoon. Daytime maximum temperatures around 40.
- Fire Danger
- Mortlock: Severe
- Ninghan: Very High
- Avon: Severe
- Jilbadgie: Severe
Sun protection 8:00am to 4:30pm, UV Index predicted to reach 15 [Extreme]
Sunday 11 December
Partly cloudy. High (70%) chance of showers in the far southwest, medium (40%) chance elsewhere. The chance of a thunderstorm. Light winds becoming northwest to northeasterly 30 to 45 km/h early in the morning then tending south to southwesterly in the late afternoon. Overnight temperatures falling to between 17 and 24 with daytime temperatures reaching the high 30s.
Monday 12 December
Partly cloudy. Medium (40%) chance of showers in the morning. The chance of a thunderstorm in the morning. Winds westerly 15 to 25 km/h increasing to 25 to 40 km/h during the morning then turning southerly 25 to 35 km/h during the afternoon. Overnight temperatures falling to between 13 and 17 with daytime temperatures reaching the mid 20s.
Tuesday 13 December
Cloud clearing. Winds south to southeasterly 15 to 20 km/h becoming light during the morning then becoming south to southeasterly 15 to 20 km/h during the afternoon. Overnight temperatures falling to around 11 with daytime temperatures reaching the mid to high 20s.
The next routine forecast will be issued at 4:25 pm WST Saturday.