7 day weather forecast

Effective as of 6:00 PM Saturday September 29

Explanatory notes:

An upper/middle level trough/disturbance brought a rainband this morning,with showers and thunderstorms thereafter,to continue during the next few hours.Possible showers and thunderstorms to move in from the north.

The upper/middle level trough/disturbance moves inland tomorrow,possible showers and thunderstorms clearing.


Another west coast trough possibly deepens near the west coast from mid next working week with another upper/middle level trough/disturbance arriving possibly bringing showers and thunderstorms.

The rest of Saturday September 29:

Shower or thunderstorm or two.

Chance of any rain:50%

Perth metropolitan area:

Partly to mostly cloudy.A medium(50%) chance of showers and thunderstorms.Winds southeasterly at 20-35 km/h.

Sunday September 30:

11-22 Degrees Celsius

Possible early shower or thunderstorm.

Chance of any rain:30%

Amount:0 to 1 mm.

Perth metropolitan area:

A slight(30%) chance of a shower or thunderstorm clearing to mostly sunny conditions by morning.Light winds shifting southwesterly at 20-30 km/h from late morning becoming south-southeasterly at 15-25 km/h at night.

Monday October 1:

11-21 Degrees Celsius

Mostly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Mostly cloudy.A slight(20%) chance of a shower,most likely over the hills.Winds south-southeasterly at 10-20 km/h tending southwesterly at 15-25 km/h in the afternoon.

Tuesday October 2:

10-22 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm.

Perth metropolitan area:

Partly cloudy.A slight(30%) chance of a shower.Winds southeasterly at 15-25 km/h.

Wednesday October 3:

10-23 Degrees Celsius

Partly to mostly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly to mostly cloudy.A slight(20%) chance of showers.Winds east-southeasterly at 20-30 km/h.

Thursday October 4:

12-23 Degrees Celsius

Showers.Possible thunderstorm.

Chance of any rain:70%

Amount:1 to 5 mm.

Perth metropolitan area:

Partly to mostly cloudy.A high(70%) chance of showers.The chance of thunderstorms.Winds easterly at 20-30 km/h becoming northerly later.

Friday October 5:

13-22 Degrees Celsius

Shower or two.

Chance of any rain:50%

Amount:0 to 2 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(50%) chance of showers.The chance of a thunderstorm.Winds westerly at 10-25 km/h.

Saturday October 6:

12-22 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.A slight(20%) chance of showers.Winds southerly at 15-25 km/h tending southwesterly at 20-30 km/h during the afternoon.

Charts:

Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM)

Figure 3.Key features identified on True Colour RGB satellite image at around 06:00 UTC(2 PM local time yesterday).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 12 UTC(8 PM 
local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

Forecast for today produced at 12:00 AM,forecast for the rest of the days produced at 4:20 PM Wednesday July 11.Weather icons courtesy of the US National Weather Service.