Current(Perth Metro)



Radar



Wednesday, 4 July 2018

Weather forecast for Perth effective as of 8:00 PM Wednesday July 4

Weather forecast for Perth effective as of 8:00 PM Wednesday July 4
Explanatory notes:
Scroll down below this section for forecast. 


Figure 1.Surface synoptic chart at 06 UTC(2 PM 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 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).


Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).




Deep cold,unstable air mass lies over the region with 500 hPa temps down to -26 Degrees Celsius overnight and strong winds aloft.Hence plenty of showers overnight,possible thunderstorms and/or small hail,gusty winds especially with showers and thunderstorms with wind gusts exceeding 75 km/h possible.

High pressure ridge builds over the region thereafter resulting in improved weather conditions,cold morning on Friday with radiational cooling of already cool air,how cold depends on cloud cover,prospects from "anvil" of land breeze convergence clouds offshore.Cold air mass means shallow convective clouds during the day on Friday and Saturday.
The rest of Wednesday July 4:
City:
Windy with showers,possible thunderstorm.
Chance of any rain:90%





 Perth metropolitan area:
Partly to mostly cloudy.A very high(90%) chance of showers.The chance of a thunderstorm and small hail.Winds southwesterly at 30-50 km/h.Gusts in excess of 75 km/h possible.
Thursday July 5:
City:
8-17 Degrees Celsius
Windy with showers easing.Possible early thunderstorm.
Chance of any rain:100%
Amount:2 to 6 mm.



Perth metropolitan area:
Partly to mostly cloudy.A very high(100%) chance of showers easing to a medium(60%) chance from morning.The chance of a thunderstorm and/or small hail early.Winds southwesterly at 30-50 km/h early easing to 20-30 km/h before dawn becoming south-southwesterly at 15-25 km/h from late morning becoming light at night.
Friday July 6:
City:
5-18 Degrees Celsius
Clouds increasing.
Chance of any rain:5%
Amount:0 mm.



Perth metropolitan area:
Partly cloudy becoming mostly cloudy in the late afternoon.Light winds.
Saturday July 7:
City:
7-19 Degrees Celsius
Clouds increasing.
Chance of any rain:5%
Amount:0 mm.



Perth metropolitan area:
Partly cloudy becoming partly to mostly cloudy in the late afternoon.Winds east-northeasterly at 10-20 km/h.
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:
7-20 Degrees Celsius
Mostly sunny.
Chance of any rain:10%
Amount:0 mm.



Perth metropolitan area:
Mostly sunny.Light winds.
Tuesday July 10:
City:
7-20 Degrees Celsius
Mostly sunny.
Chance of any rain:5%
Amount:0 mm.



Perth metropolitan area:
Mostly sunny.Light winds.


Wednesday July 11:

City:


7-21 Degrees Celsius

Mostly sunny.

Chance of any rain:20%

Amount:0 mm.







Perth metropolitan area:

Mostly sunny.A slight(20%) 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.
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