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).
High pressure ridge builds over the region,cold morning today with radiational cooling of already cool air.The chance of fog and also frost in hollow areas early.
Cold air mass trapped under a subsidence inversion means shallow convective clouds during the day on Friday and Saturday.
Warm air advection results in relatively warm air mass early next working week,a weak west coast trough forms offshore.
Friday July 6:
City:
4-18 Degrees Celsius
Clouds increasing.
Chance of any rain:5%
Amount:0 mm.
Perth metropolitan area:
Mostly sunny becoming partly to mostly cloudy in the afternoon.Fog possible early.The chance of frost in hollow areas and the hills early.Light winds.
Saturday July 7:
City:
7-19 Degrees Celsius
Partly to mostly cloudy.
Chance of any rain:5%
Amount:0 mm.
Perth metropolitan area:
Partly to mostly cloudy.Winds easterly at 10-20 km/h tending northeasterly at 15-25 km/h during the afternoon.
Sunday July 8:
City:
7-20 Degrees Celsius
Sunny.
Chance of any rain:0%
Amount:0 mm.
Perth metropolitan area:
Sunny.Winds east-northeasterly at 15-25 km/h becoming light from evening.
Monday July 9:
City:
8-21 Degrees Celsius
Sunny day.
Chance of any rain:0%
Amount:0 mm.
Perth metropolitan area:
Sunny day.Winds northeasterly at 15-25 km/h becoming light from afternoon.
Tuesday July 10:
City:
6-21 Degrees Celsius
Mostly sunny.
Chance of any rain:10%
Amount:0 mm.
Perth metropolitan area:
Mostly sunny.Light winds.
Wednesday July 11:
City:
8-20 Degrees Celsius
Possible shower.
Chance of any rain:30%
Amount:0 to 1 mm.
Perth metropolitan area:
Partly cloudy.A slight(30%) chance of showers.Light winds tending west-northwesterly at 15-25 km/h during the day.
Thursday July 12:
City:
10-20 Degrees Celsius
Showers.
Chance of any rain:60%
Amount:1 to 8 mm.
Perth metropolitan area:
Partly to mostly cloudy.A medium(60%) chance of showers.Winds northwesterly at 15-25 km/h.
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.
