Explanatory notes:
Scroll down below this section for forecast.
Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 12 UTC(8 PM local time today).Image courtesy of the Australian Bureau of Meteorology(BOM).
Relatively warm but cooler than expected maximum temperatures occurred today with the west coast trough near the west coast,west coast trough moving inland from Monday afternoon and hence cooler maximum temperature with early sea breezes on Tuesday.
Likely hot conditions late during working week with the west coast trough deepening down the west coast with warm air advection,though still some uncertainty this far out with variation between models and model ensembles.
There is also the slight chance of diurnal convection with sea breeze convergence on Friday with some atmospheric instability possible with relatively steep vertical steep lapse rates but still plenty of uncertainty.
Plenty of uncertanty on the precise synoptic conditions during the weekend.
The long spell with no 40+ Degree Days continues with the last 40+ Degree Day being Australia Day last year!With no 40+ Degree day within the forecast period,the next 40+ Degree Day will be at least the latest during summer as the 2005-2006 summer.
The rest of Sunday February 11:
City:
Clear.
Chance of any rain:0%
Perth metropolitan area:
Clear.Winds south-southwesterly at 25-35 km/h becoming south-southeasterly at 10-20 km/h at night.
Monday February 12:
City:
18-32 Degrees Celsius
Sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Sunny.East-southeasterly at 15-25 km/h becoming southwesterly at 20-35 km/h from afternoon easing to 15-25 km/h at night.Maximum temperature range from around 28 Degrees Celsius over coastal suburbs to 35 Degrees Celsius over inland coastal plain,around 32 Degrees Celsius about the city centre.
Tuesday February 13:
City:
17-27 Degrees Celsius
Becoming sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Mostly sunny becoming sunny by around the middle of the day.Winds southerly at 15-25 km/h tending southwesterly at 20-30 km/h between around the middle of the day and evening.
Wednesday February 14:
City:
17-31 Degrees Celsius
Sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Sunny.Winds east-southeasterly at 10-20 km/h becoming southwesterly at 20-30 km/h from afternoon becoming south-southeasterly at 15-25 km/h.
Thursday February 15:
City:
21-37 Degrees Celsius
Hot and sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Hot and sunny.Winds easterly at 20-30 km/h becoming south-southwesterly at 15-25 km/h from afternoon becoming south-southeasterly at 10-20 km/h at night becoming east-southeasterly at 20-30 km/h.Maximum temperatures range from around 40 Degrees Celsius over inland coastal plain to around 33 Degrees Celsius over coastal areas,around 37 Degrees Celsius about the city centre.
Friday February 16:
City:
24-37 Degrees Celsius
Hot and mostly sunny.
Chance of any rain:10%
Rainfall amount:0 mm.
Perth metropolitan area:
Hot and sunny.A slight(20%) chance of a shower or thunderstorm in the afternoon most likely over the hills.Winds easterly at 20-30 km/h becoming northwesterly at 10-20 km/h from around the middle of the day becoming light at night.
Perth metropolitan area:
Saturday February 17:
City:
20-33 Degrees Celsius
Mostly sunny.
Chance of any rain:10%
Rainfall amount:0 mm.
Perth metropolitan area:
Mostly sunny.Light winds becoming west-southwesterly at 15-25 km/h from afternoon becoming light at night.
Perth metropolitan area:
Sunday February 18:
City:
19-30 Degrees Celsius
Mostly sunny.
Chance of any rain:20%
Rainfall amount:0 mm.
Perth metropolitan area:
Mostly sunny.A slight(20%) chance of a shower.Winds southwesterly at 15-25 km/h.
Forecast produced at 4:20 PM Sunday February 11.Weather icons courtesy of the US National Weather Service.
