Weather forecast for Perth effective as of 12:00 AM Thursday August 2

Weather forecast for Perth effective as of 12:00 AM Thursday August 2
Explanatory notes:
Scroll down below this section for forecast. 

Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM)

Figure 2.The Australian Bureau of Meteorology(BOM) has issued a severe weather warning for damaging winds and damaging surf for parts of the west,southwest and south of the state including the Perth Metropolitan Area for Wednesday.Please see http://www.bom.gov.au/products/IDW21037.shtml for the latest severe weather warning.

Figure 3.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 4.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).

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

A strong cold front moved across the region early on Wednesday  with a deep cold air mass currently over the region with 500 hPa temperatures down to -29 Degrees Celsius,showers,thunderstorms and possible hail occurred.Gusty winds with showers and thunderstorms.Possibly the coldest air mass of the year so far lies over the region,with 850 hPa temps down to -2 Degrees Celsius.

The Australian Bureau of Meteorology(BOM) has issued a severe weather warning for damaging winds and damaging surf for parts of the west,southwest and south of the state including the Perth Metropolitan Area for Wednesday.Please see http://www.bom.gov.au/products/IDW21037.shtml for the latest severe weather warning.

Cold southwesterly air steam on Thursday and Friday leads to further showers.

Another cold front likely moves across the region late on Friday.

Thursday August 2:

City:

6-17 Degrees Celsius

Showers.
BOM severe weather warning in effect!See note!

Chance of any rain:100%

Amount:2 to 7 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(100%) chance of showers.The chance of thunderstorms and/or small hail in the early hours.Winds south-southwesterly at 30-45 km/h near the coast,light inland,becoming southwesterly at 20-30 km/h over all areas from late morning becoming west-southwesterly from evening.Gusty winds near the coast in the early hours,gusts exceeding 80 km/h possible.

Friday August 3:

City:

11-18 Degrees Celsius

Showers increasing.

Chance of any rain:100%

Amount:5 to 15 mm.

Perth metropolitan area:

Partly to mostly cloudy.A high(80%) chance of showers increasing to a very high(100%) chance at night.Winds westerly at 25-40 km/h.

Saturday August 4:

City:

10-16 Degrees Celsius

Showers easing.

Chance of any rain:90%

Amount:2 to 8 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(90%) chance of showers easing to a medium(60%) chance before dawn.The chance of a thunderstorm during the early hours.Winds south-southwesterly at 25-40 km/h.

Sunday August 5:

City:

7-17 Degrees Celsius

Partly to mostly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly to mostly cloudy.A slight(20%) chance of a shower.Winds south-southwesterly at 10-20 km/h.

Monday August 6:

City:

7-17 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 0.4 mm.

Perth metropolitan area:

Mostly cloudy.A slight(30%) chance of showers and/or drizzle.Winds west-northwesterly at 15-25 km/h.

Tuesday August 7:

City:

11-20 Degrees Celsius

Shower or two.

Chance of any rain:50%

Amount:0 to 3 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(50%) chance of showers.Winds westerly at 15-25 km/h.

Wednesday August 8:

City:

11-20 Degrees Celsius

Showers.

Chance of any rain:90%

Amount:2 to 8 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(90%) chance of showers.Winds west-northwesterly at 30-45 km/h.

Forecast for today produced at 12:00 AM,forecast for the rest of the days produced at 4:20 PM Wednesday July 11.Weather icons courtesy of the US National Weather Service.