Effective as of 4:00 PM Thursday September 17 2020
Explanatory notes:Friday September 18:
City:
8-23 Degrees Celsius
Sunny
Chance of any rain:5%
Amount:Nil
Perth Metropolitan Area:
Sunny.Winds east-northeasterly at 15-30 km/h becoming northeasterly at 20-30 km/h in the morning shifting westerly at 10-20 km/h from early afternoon and becoming light from evening.
Saturday September 19:
City:
10-18 Degrees Celsius
Windy with showers.
Chance of any rain:100%
Amount:3 to 8 mm
Perth Metropolitan Area:
Partly to mostly cloudy.A very high (100%) chance of showers.The chance of small hail from afternoon.Light winds shifting southwesterly at 20-30 km/h in the morning increasing to 25-40 km/h in the afternoon.Gusty winds from afternoon.
Sunday September 19:
City:
9-17 Degrees Celsius
Windy with showers.
Chance of any rain:90%
Amount:2 to 5 mm
Perth Metropolitan Area:
Partly to mostly cloudy.A very high (90%) chance of showers.The chance of small hail until afternoon.Winds southwesterly at 25-40 km/h.Gusty winds.
Monday September 20:
City:
9-18 Degrees Celsius
Possible light shower
Chance of any rain:30%
Amount:0 to 0.6 mm
Perth Metropolitan Area:
Partly cloudy.A slight (30%) chance of light showers.Winds southwesterly at 15-25 km/h.
Tuesday September 21:
City:
9-21 Degrees Celsius
Possible shower.
Chance of any rain:30%
Amount:Nil
Perth Metropolitan Area:
Partly cloudy.A slight (30%) chance of showers.Light winds.
Wednesday September 22:
City:
9-27 Degrees Celsius
Sunny.
Chance of any rain:0%
Amount:Nil
Perth Metropolitan Area:
Sunny.Winds easterly at 10-25 km/h becoming northeasterly in the morning becoming light from afternoon.
Thursday September 23:
City:
13-28 Degrees Celsius
Partly cloudy.
Chance of any rain:10%
Amount:Nil
Perth Metropolitan Area:
Partly cloudy.Winds east-northeasterly at 20-30 km/h.
Friday September 24:
City:
13-22 Degrees Celsius
Showers.
Chance of any rain:70%
Amount:4 to 10 mm
Perth Metropolitan Area:
Partly to mostlycloudy.A high(70%) chance of showers.The chance of thunderstorms.Winds northwesterly at 10-25 km/h.
Charts:
Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).
Figure 2.Key features identified on True Colour RGB satellite image at around 06:00 UTC(2 PM local time yesterday).Satellite image courtesy of the Japanese Meteorological Agency(JMA).
Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 12 UTC(8 PM
local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).
local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).
Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).
