Current(Perth Metro)



Radar



Wednesday, 4 July 2018

Weather forecast for Perth effective as of 12:00 AM Wednesday July 4

Weather forecast for Perth effective as of 12:00 AM 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).




Showers in west-northwesterly flow,showers increasing in the early mrning with a cold front moving across the region,also possible thunderstorms with some instability.Post cold frontal showers thereafter,deep cold air mass lies over the region tonight and in the early hours on Thursday as indicated by 500 hPa temps down to -26 Degrees Celsius,as a result plenty of showers,possible thunderstorms and small hail.Gusty winds also possible today especially ahead of showers and thunderstorms,gusts in excess of 75 km/h possible,in excess of 80 km/h near the coast.

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.
Wednesday July 4:
City:
12-18 Degrees Celsius
Windy with showers,possible thunderstorm.
Chance of any rain:100%
Amount:5 to 15 mm.



Perth metropolitan area:
Partly to mostly cloudy.A very high(100%) chance of showers.The chance of a thunderstorm.Possible small hail at night.Winds west-northwesterly at 25-40 km/h becoming westerly at 35-50 km/h from late morning becoming southwesterly at 30-45 km/h at night.Gusts in excess of 75 km/h possible,80 km/h near the coast.
Thursday July 5:
City:
8-16 Degrees Celsius
Showers easing.Possible early thunderstorm.
Chance of any rain:100%
Amount:3 to 8 mm.



Perth metropolitan area:
Partly to mostly cloudy.A very high(100%) chance of showers easing to a medium(60%) chance from late morning.The chance of a thunderstorm and/or small hail early.Winds south-southwesterly at 15-30 km/h becoming light at night.
Friday July 6:
City:
5-18 Degrees Celsius
Partly cloudy.
Chance of any rain:10%
Amount:0 mm.



Perth metropolitan area:
Partly cloudy.Light winds.
Saturday July 7:
City:
7-18 Degrees Celsius
Partly cloudy.
Chance of any rain:5%
Amount:0 mm.



Perth metropolitan area:
Partly cloudy.Winds east-northeasterly at 10-20 km/h.
Sunday July 8:
City:
7-19 Degrees Celsius
Sunny.
Chance of any rain:0%
Amount:0 mm.



Perth metropolitan area:
Sunny.Winds east-northeasterly at 10-20 km/h.

Monday July 9:
City:
7-20 Degrees Celsius
Mostly sunny.
Chance of any rain:10%
Amount:0 mm.



Perth metropolitan area:
Mostly sunny.Winds northeasterly at 15-25 km/h becoming light from afternoon.
Tuesday July 10:
City:
7-20 Degrees Celsius
Mostly sunny.
Chance of any rain:10%
Amount:0 mm.



Perth metropolitan area:
Mostly sunny.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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