Explanatory notes:
Scroll down below this section for forecast.
Figure 4.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).
Large diurnal temperature variation until Thursday with a warm air mass leading to relatively warm afternoons but excellent radiational cooling leading to cold mornings.A west coast trough lied offshore today.
Despite a max of 22.8 Degrees Celsius it will be a cold morning tomorrow with excellent radiational cooling.
Also as the pressure gradient "bends" a little during the day with the west coast trough inland on Wednesday leading to a light sea breeze in the afternoon.
A cold front is likely to move across the region on Thursday night/early on Friday and another cold front on Sunday.
Despite a max of 22.8 Degrees Celsius it will be a cold morning tomorrow with excellent radiational cooling.
Also as the pressure gradient "bends" a little during the day with the west coast trough inland on Wednesday leading to a light sea breeze in the afternoon.
A cold front is likely to move across the region on Thursday night/early on Friday and another cold front on Sunday.
The rest of Tuesday July 10:
City:
Chance of any rain:0%
Perth metropolitan area:
Clear.Light winds.
Wednesday July 11:
City:
4-21 Degrees Celsius
Sunny.
Chance of any rain:0%
Amount:0 mm.
Perth metropolitan area:
Sunny.Patches of fog possible early.Light winds tending south-southwesterly at 10-20 km/h in the afternoon.
Thursday July 12:
City:
4-21 Degrees Celsius
Night showers.
Chance of any rain:70%
Amount:0.2 to 3 mm.
Perth metropolitan area:
Mostly sunny morning.Patches of fog possible early.A very high(90%) chance of showers over far southwestern areas from evening,a high(70%) chance elsewhere.Light winds becoming northwesterly at 20-30 km/h from afternoon.
Friday July 13:
City:
12-19 Degrees Celsius
Showers easing.
Chance of any rain:90%
Amount:1 to 4 mm.
Perth metropolitan area:
Partly to mostly cloudy.A very high(90%) chance of showers easing to a medium(40%) in the morning.Winds west-southwesterly at 20-30 km/h becoming light at night.
Saturday July 14:
City:
9-18 Degrees Celsius
Showers.Possible night thunderstorm.
Chance of any rain:90%
Amount:1 to 5 mm.
Perth metropolitan area:
Partly to mostly cloudy.A high(80%) chance of showers increasing to a very high(90%) chance from evening.The chance of a thunderstorm at night.Winds west-northwesterly at 10-20 km/h.
Sunday July 15:
City:
9-18 Degrees Celsius
Showers.Possible early thunderstorm.
Chance of any rain:90%
Amount:1 to 5 mm.
Perth metropolitan area:
Partly to mostly cloudy.A very high(90%) chance of showers.The chance of a thunderstorm during the early hours.Winds northwesterly at 10-20 km/h shifting southwesterly later.
Monday July 16:
City:
12-19 Degrees Celsius
Showers
Chance of any rain:90%
Amount:0.4 to 3 mm.
Perth metropolitan area:
Partly to mostly cloudy.A very high(90%) chance of showers.Winds west-southwesterly at 20-30 km/h.
Tuesday July 17:
City:
9-19 Degrees Celsius
Possible shower.
Chance of any rain:40%
Amount:0 to 1 mm.
Perth metropolitan area:
Partly cloudy.A medium(40%) chance of showers.Light winds.
Forecast for today produced at 11:45 PM Monday May 7,forecast for the rest of the days produced at 5:00 PM Monday May 7.Weather icons courtesy of the US National Weather Service.
