Explanatory notes:
Cold front and upper level trough,deep,cold and unstable air mass moves across the region during the early hours bringing showers,possible thunderstorms,thunderstorm risk diminishes in the morning as the cold pool aloft contracts to the east,showers clear during the afternoon as a ridge of high pressure builds to the north,altitude of subsidence inversion decreases.
Sunday October 14:
11-20 Degrees Celsius
Showers easing.Possible early thunderstorm.
Chance of any rain:100%
Amount:5 to 15 mm.
Perth metropolitan area:
Partly cloudy.A very high(100%) chance of showers in the early hours,easing to a slight(30%) chance in the afternoon.The chance of a thunderstorm and/or small hail in the early hours.Winds westerly at 25-40 km/h becoming southwesterly before dawn becoming light at night.
Monday October 15:
11-21 Degrees Celsius
Partly cloudy.
Chance of any rain:0%
Amount:0 mm.
Perth metropolitan area:
Partly cloudy.Light winds tending west-southwesterly at 10-20 km/h in the afternoon.
Tuesday October 16:
9-26 Degrees Celsius
High clouds(mostly sunny).
Chance of any rain:0%
Amount:0 mm.
Perth metropolitan area:
High clouds(mostly sunny).Light winds tending south-southwesterly at 10-20 km/h in the afternoon.
Wednesday October 17:
13-26 Degrees Celsius
Sunny day.
Chance of any rain:20%
Amount:0 mm.
Perth metropolitan area:
A sunny day.A medium(40%) chance of showers over southwestern suburbs at night,a slight(20%) chance elsewhere.Light winds becoming westerly at 10-25 km/h during the afternoon.
Thursday October 18:
13-19 Degrees Celsius
Showers.
Chance of any rain:80%
Amount:2 to 8 mm.
Perth metropolitan area:
Partly to mostly cloudy.A high(80%) chance of showers.The chance of a thunderstorm.Winds westerly at 20-35 km/h becoming southwesterly later during the day.
Friday October 19:
10-20 Degrees Celsius
Possible shower or two.
Chance of any rain:40%
Amount:0 to 1 mm.
Perth metropolitan area:
Partly to mostly cloudy.A medium(40%) chance of showers.Light winds tending west-southwesterly at 10-20 km/h during the day.
Saturday October 20:
12-21 Degrees Celsius
Possible shower or two.
Chance of any rain:40%
Amount:0 to 1 mm.
Perth metropolitan area:
Partly to mostly cloudy.A medium(40%) chance of showers.Light winds tending west-northwesterly at 15-25km/h during the day.
Charts:
Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM)
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).
Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).
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.
