7 day weather forecast

Effective as of 1:00 PM Monday August 3 2020

Explanatory notes:




Currently at 11 AM land breeze lies over the region due to rain cooled air accumulating over land.

This air is fairly stable thus limiting the potential of thunderstorms with the showers mainly being affection type.

Thunderstorm risk increases if and once the more unstable air offshore moves onshore.High resolution nested model, ACCESS-CITY suggests that these more unstable air will not move onshore with winds remaining nort-northeasterly.h

The cut off low brings showers and with the upper level cold pool over the region, also possible thunderstorms and/or small hail. 500 hPa temperatures below -26 Degrees Celsius are indicative of the cold pool aloft.

Monday August 2:

City:

7-14 Degrees Celsius

Showers.Possible thunderstorm.

Chance of any rain:95%

Amount:2 to 10 mm

Perth Metropolitan Area:

Partly to very cloudy.A very high(95%) chance of showers.The chance of a thunderstorm and/or small hail.Winds north-northeasterly at 10-20 km/h.

Tuesday August 3:

City:

6-17 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 0.4 mm

Perth Metropolitan Area:

Partly cloudy.A slight(30%) chance of a shower.Winds south-southeasterly at 10-20 km/h tending 15-25 km/h during the day.

Wednesday August 4:

City:

8-19 Degrees Celsius

Clouds increasing.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

A mostly sunny morning with clouds developing to become partly to mostly cloudy in the afternoon.Winds south-southeasterly at 10-25 km/h.

Thursday August 5:

City:

6-18 Degrees Celsius

Clouds increasing.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny morning with clouds developing to become partly cloudy in the afternoon.Winds east-southeasterly at 10-20 km/h.

Friday August 6:

City:

6-18 Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Winds east-northeasterly at 10-20 km/h.

Saturday August 7:

City:

8-19 Degrees Celsius

Possible PM shower

Chance of any rain:30%

Amount:0 to 1 mm

Perth Metropolitan Area:

Partly cloudy.A slight(30%) chance of showers from afternoon.Winds northeasterly at 20-30 km/h.

Sunday August 8:

City:

12-18 Degrees Celsius

Showers,rain.

Chance of any rain:90%

Amount:10 to 20 mm

Perth Metropolitan Area:

Partly cloudy.A very high(90%) chance of showers,rain.Winds north-northeasterly at 20-30 km/h.

Charts:

Figure 1.Surface synoptic chart at 00 UTC(8 AM local time today).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 today).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 00 UTC(8 AM 
local time today).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM)
Some data on this site is sourced from the Australian Bureau of Meteorology(BOM).