Explanatory notes:
Scroll down below this section for forecast.
Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 06 UTC(2 PM local time today).Image courtesy of the Australian Bureau of Meteorology(BOM).
As predicted the sea breeze only penetrated western suburbs today.
With the west coast trough inland tomorrow and on Thursday,sea breezes in the afternoon and evening though they will be weaker than usual with weak pressure gradients.
The west coast trough deepens near the west coast during the weekend leading to some warm air advection however,moist air over the northwest of the state will limit how hot it will be.
The slight chance of showers and thunderstorms over the region most likely over the hills from Saturday afternoon triggered by sea breeze convergence with an upper/middle level trough/disturbance to the west.Medium chances of showers on Sunday with a weak low possibly forming to the south but still plenty of uncertainty this far out.
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 on record during summer for the Perth Metro station or if there is no 40+ Degree Day at all this summer the first since the 2001-2002 summer.
With the west coast trough inland tomorrow and on Thursday,sea breezes in the afternoon and evening though they will be weaker than usual with weak pressure gradients.
The west coast trough deepens near the west coast during the weekend leading to some warm air advection however,moist air over the northwest of the state will limit how hot it will be.
The slight chance of showers and thunderstorms over the region most likely over the hills from Saturday afternoon triggered by sea breeze convergence with an upper/middle level trough/disturbance to the west.Medium chances of showers on Sunday with a weak low possibly forming to the south but still plenty of uncertainty this far out.
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 on record during summer for the Perth Metro station or if there is no 40+ Degree Day at all this summer the first since the 2001-2002 summer.
The rest of Tuesday February 20:
Perth metropolitan area:
City:
Clear.
Chance of any rain:0%
Perth metropolitan area:
Clear.Winds southeasterly at 15-25 km/h tending south-southwesterly at 20-30 km/h over western suburbs until evening.
Perth metropolitan area:
Wednesday February 21:
City:
16-29 Degrees Celsius
Mostly sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Mostly sunny.Winds east-southeasterly at 20-30 km/h becoming southwesterly at 15-30 km/h in the afternoon and evening becoming light at night.
Thursday February 22:
18-31 Degrees Celsius
Perth metropolitan area:
Thursday February 22:
City:
Mostly sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Mostly sunny.Light winds becoming south-southwesterly at 15-25 km/h from afternoon easing to 10-20 km/h at night.
Friday February 23:
Perth metropolitan area:
Friday February 23:
City:
17-31 Degrees Celsius
Partly cloudy.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly cloudy.Winds south-southeasterly at 10-20 km/h becoming south-southwesterly at 15-25 km/h becoming east-southeasterly at 20-30 km/h.
Saturday February 24:
Perth metropolitan area:
Saturday February 24:
City:
18-33 Degrees Celsius
Partly cloudy.
Chance of any rain:20%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly cloudy.A slight(30%) chance of showers and/or thunderstorms from afternoon over the hills,a slight(20%) chance elsewhere.Winds easterly at 20-30 km/h becoming northeasterly from afternoon.
Sunday February 25:
Perth metropolitan area:
Sunday February 25:
City:
20-28 Degrees Celsius
Possible showers.
Chance of any rain:40%
Rainfall amount:0 to 1 mm.
Perth metropolitan area:
Partly cloudy.A medium(40%) chance of a showers.The chance of a thunderstorm.Winds northeasterly at 15-25 km/h becoming southwesterly at 20-30 km/h from afternoon.
Monday February 26:
Perth metropolitan area:
Monday February 26:
City:
16-26 Degrees Celsius
Partly cloudy.
Chance of any rain:20%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly cloudy.A slight(20%) chance of showers.Winds south-southeasterly at 10-20 km/h becoming south-southwesterly at 15-25 km/h from afternoon becoming south-southeasterly at 10-20 km/h at night.
Tuesday February 27:
Perth metropolitan area:
Tuesday February 27:
City:
15-29 Degrees Celsius
Sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Sunny.Winds south-southeasterly at 10-20 km/h becoming south-southwesterly at 15-25 km/h over western suburbs from afternoon becoming south-southeasterly at 15-25 km/h at night.
Forecast produced at 5:20 PM Tuesday February 20.Weather icons courtesy of the US National Weather Service.
