IDW10100 Western Australia Forecast Issued at 4:45 am WST on Wednesday 20 January 2021

IDW10100
Australian Government Bureau of Meteorology
Western Australia

Western Australia Forecast
Issued at 4:45 am WST on Wednesday 20 January 2021
for the period until midnight WST Saturday 23 January 2021.

Warning Information
For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659
210* or listen for warnings on relevant TV and radio broadcasts.

Weather Situation – Northern Western Australia
A trough lies near the Kimberley and Pilbara coasts. The monsoon trough lies
through the Timor Sea with a developing tropical low within the monsoon trough.
The low will develop further as it moves southwest parallel to the northwest
coast on Wednesday and Thursday, dragging the monsoon trough south over
northwest WA for the remainder of the week. It may develop into a Tropical
Cyclone on Thursday and approach the east Pilbara coast late Friday or during
Saturday. There is however still some uncertainty of the movement and
development of the system.

Weather Situation – Southern and Central Western Australia
A deep surface trough lies inland from the west coast with a high pressure
ridge lying to the southeast of the State. The ridge will continue to contract
east as the trough moves further east into central parts on Wednesday and
Thursday. A weak ridge develops to the south of the State on Thursday and
another trough may develop over central parts of the South West Land Division
on Friday.

Forecast for the rest of Wednesday 20 January
Showers and thunderstorms over the Kimberley, western Pilbara, eastern parts of
the Gascoyne, Goldfields and most central and southern parts of the South West
Land Division.

Forecast for Thursday 21 January
Showers and thunderstorms over the Kimberley, Pilbara and eastern parts of the
Gascoyne, Goldfields, South East Coastal and Eucla districts. Light showers
about the southern parts of the South Coastal and South West districts.

Forecast for Friday 22 January
Showers and thunderstorms over the Kimberley, Pilbara and eastern parts of the
Gascoyne, Goldfields, South Interior, Eucla and inland eastern parts of the
South West Land Division. Light showers about the South Coastal district.

Forecast for Saturday 23 January
Showers and thunderstorms over the Kimberley, Pilbara, inland Gascoyne,
Interior, Goldfields, Eucla and far eastern parts of the South West Land
Division.

The next routine forecast will be issued at 4:30 pm WST Wednesday.

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