Weather forecast for Perth effective as of 12:30 PM Sunday February 25

Weather forecast for Perth effective as of 12:30 PM Sunday February 25:

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 a severe thunderstorm warning extending over southern suburbs.Please see http://www.bom.gov.au/wa/warnings/ for the latest warnings for the state.

Figure 3.Key features identified on True Colour RGB satellite image at around 07:00 UTC(3 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 5:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

Forecast updated based on latest conditions.A sea breeze has been blowing over the region and has triggered sea breeze thunderstorms affecting the hills.Intense elevated thunderstorms also affected southern suburbs this morning.Further elevated thunderstorms are also possible for the next few hours most likely over southern suburbs.

The Australian Bureau of Meteorology(BOM) has a severe thunderstorm warning extending over southern suburbs.Please see http://www.bom.gov.au/wa/warnings/ for the latest warnings for the state.

Cooler air mass lies over the region on Monday.Moist low level air means there will still be plenty of clouds.The  chance of "anticyclone gloom" as predicted by ECMWF 00Z which could lead to light showers or drizzle. but not by other models and model runs.

A weak cold front possibly brushes the region early on Tuesday but precipitation is likely to be confined to coastal suburbs.Cloud cover in the morning clears by afternoon as a subtropical high pressure ridge dtrengthens to the south.

Rapidly warming and drying conditions thereafter with a subtropical high pressure system to the south and a west coast trough forming near the west coast leading to some warm air advection.

The long spell with no 40+ Degree Days continues with the last 40+ Degree Day being Australia Day last year!With no 40+ Degree day within the forecast period,this summer will have no 40+ Degrees Day the first since the 2001-2002 summer!

The rest of Sunday February 25:

City:

Max:30 Degrees Celsius

Possible showers and thunderstorm clearing later.

Chance of any rain:40%

Perth metropolitan area:

Partly cloudy.A medium(60%) chance of a showers and thunderstorms in the south and east,a medium(40%) chance elsewhere clearing by late afternoon.Winds westerly at 10-25 km/h becoming southwesterly from late afternoon becoming south-southwesterly at 10-20 km/h at night becoming southerly later at night.

Note:The Australian Bureau of Meteorology(BOM) has a severe thunderstorm warning extending over southern suburbs.Please see http://www.bom.gov.au/wa/warnings/ for the latest warnings for the state.

Monday February 26:

City:

19-24 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 or drizzle.The chance of a thunderstorm in the north in the early hours.Winds south-southwesterly at 15-25 km/h becoming southwesterly at 20-30 km/h from afternoon becoming south-southwesterly at 15-25 km/h at night.

Tuesday February 27:

City:

14-25 Degrees Celsius

Clouds clearing.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Mostly cloudy becoming sunny by afternoon.A slight(20%) chance of showers in the early hours most likely over coastal suburbs.Winds south-southeasterly at 10-25 km/h tending south-southwesterly at 20-30 km/h in the afternoon and evening.


Wednesday February 28:

City:

14-30 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Winds east-southeasterly at 20-30 km/h tending southerly at 15-25 km/h in the afternoon and evening.

Thursday March 1:

City:

19-33 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds easterly at 15-25 km/h becoming light from afternoon.

Friday March 2:

City:

20-31 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.A slight(20%) chance of a shower or thunderstorm.Light winds becoming south-southwesterly at 15-25 km/h from afternoon becoming south-southeasterly at 10-20 km/h at night.


Saturday March 3:

City:

19-32 Degrees Celsius

Mostly sunny.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds east-southeasterly at 15-25 km/h tending south-southwesterly at 15-25 km/h in the afternoon and evening.

Forecast for today produced at 12:30 PM,forecast for the rest of the days produced at 5:00 PM Saturday February 24.Weather icons courtesy of the US National Weather Service.