Effective as of 4:00 AM Monday November 2 2020
Explanatory notes:Showers and thunderstorms today with atmospheric instability associated with steep vertical lapse rates with a cold pool with an upper level trough aloft.
Can't rule out the possibility of small hail with the thunderstorms with the cold pool aloft but instability and vertical wind shear likely isn't sufficient for severe thunderstorms over the Perth Area.
Thunderstorms are most likely in the east and over the hills with a somewhat westerly steering flow from the middle of the day.
Monday November 2:
City:
12-21 Degrees Celsius
Showers.Possible thunderstorm.
Chance of any rain:70%
Amount:2 to 8 mm
Perth Metropolitan Area:
Partly to mostly cloudy.A high (70%) chance of showers and thunderstorms.Possible small hail most likely in the east and over the hills.Light winds becoming west-northwesterly at 10-20 km/h from late morning, southwesterly from afternoon.
Tuesday November 3:
City:
13-23 Degrees Celsius
Possible AM shower or two.
Chance of any rain:30%
Amount:Nil
Perth Metropolitan Area:
Partly cloudy.A medium (40%) chance of showers in the early hours and morning.Winds southeasterly at 15-25 km/h tending south-southwesterly at 20-30 km/h in the afternoon.
Wednesday November 4:
City:
13-25 Degrees Celsius
Partly cloudy.
Chance of any rain:0%
Amount:Nil
Perth Metropolitan Area:
Partly cloudy.Winds east-southeasterly at 15-25 km/h tending south-southwesterly in the afternoon.
Thursday November 5:
City:
13-29 Degrees Celsius
Mostly sunny.
Chance of any rain:5%
Amount:Nil
Perth Metropolitan Area:
Mostly sunny.Winds east-northeasterly at 20-30 km/h becoming light from afternoon.
Friday November 6:
City:
15-31 Degrees Celsius
Mostly sunny.
Chance of any rain:5%
Amount:Nil
Perth Metropolitan Area:
Mostly sunny.Winds easterly at 15-25 km/h.
Saturday November 7:
City:
17-32 Degrees Celsius
Partly cloudy.
Chance of any rain:10%
Amount:Nil
Perth Metropolitan Area:
Partly cloudy.Winds east-northeasterly at 15-25 km/h becoming light from afternoon.
Sunday November 8:
City:
17-27 Degrees Celsius
Partly cloudy.
Chance of any rain:20%
Amount:Nil
Perth Metropolitan Area:
Partly cloudy.A slight(20%) chance of a shower.Light winds becoming southwesterly at 20-30 km/h during the day.
Cha
Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).
2.
Figure 2.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).
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).
