Explanatory notes:
Scroll down below this section for forecast.
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).
A cold front moves across the region early on Monday with cold air mass over the region thereafter.A weak pre frontal trough associated with low level wind convergence could result in a line of showers and thunderstorms moving across the region 1 or 2 hours before the cold frontal passage.
The cold front brings showers and the chance of a thunderstorm,cold air mass behind results in post cold frontal showers but possibly dry low level air in the cold air mass could restrict shower activity.
The cold front brings showers and the chance of a thunderstorm,cold air mass behind results in post cold frontal showers but possibly dry low level air in the cold air mass could restrict shower activity.
Showery weather for much of the working week with the subtropical high pressure ridge to the north throughout the working week with occasional weak cold front/low pressure trough passage.
The rest of Sunday June 17:
City:
Possible late night shower.
Chance of any rain:30%
Perth metropolitan area:
Clouds increasing.A medium(60%) chance of showers in the far southwest at night,grading to a slight(20%) chance in the northeast.The chance of a thunderstorm with gusty winds in the southwest late at night.Winds northerly at 10-25 km/h becoming north-northwesterly late at night.
11-18 Degrees Celsius
Monday June 18:
City:
Showers easing.Possible early thunderstorm.
Chance of any rain:100%
Amount:8 to 20 mm.
Perth metropolitan area:
Partly to mostly cloudy.A very high(100%) chance of showers easing to a high(70%) chance from morning.The chance of a thunderstorm in the early hours,in the south until late afternoon.Gusty winds possible early.Winds northwesterly at 20-30 km/h becoming westerly at 15-25 km/h early becoming west-southwesterly at 20-35 km/h in the morning becoming southwesterly from afternoon,light late at night.
Tuesday June 19:
City:
9-18 Degrees Celsius
Showers.
Chance of any rain:80%
Amount:1 to 5 mm.
Perth metropolitan area:
Partly to mostly cloudy.A high(80%) chance of showers.Winds west-southwesterly at 15-25 km/h becoming light at night.
Wednesday June 20:
City:
10-20 Degrees Celsius
Showers.
Chance of any rain:90%
Amount:1 to 4 mm.
Perth metropolitan area:
Partly to mostly cloudy.A very high(90%) chance of showers.Winds west-southwesterly at 15-25 km/h.
Thursday June 21:
City:
9-20 Degrees Celsius
Showers.
Chance of any rain:90%
Amount:1 to 4 mm.
Perth metropolitan area:
Partly to mostly cloudy.A very high(90%) chance of showers.Winds westerly at 10-20 km/h.
Friday June 22:
City:
8-19 Degrees Celsius
Possible shower or two.
Chance of any rain:40%
Amount:0 to 1 mm.
Perth metropolitan area:
Partly cloudy.A medium(40%) chance of showers.Light winds.
Saturday June 23:
City:
7-20 Degrees Celsius
Partly cloudy.
Chance of any rain:20%
Amount:0 mm.
Perth metropolitan area:
Mostly sunny.A slight(20%) chance of a shower.Light winds.
Sunday June 24:
City:
7-21 Degrees Celsius
Mostly sunny.
Chance of any rain:0%
Amount:0 mm.
Perth metropolitan area:
Mostly sunny.Winds northeasterly at 10-20 km/h.
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.
