IDW10100
Australian Government Bureau of Meteorology
Western Australia

Western Australia Forecast
Issued at 4:45 am WST on Wednesday 12 April 2023
for the period until midnight WST Saturday 15 April 2023.

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
Tropical Cyclone Ilsa remains to the west of the Kimberley coast and continues
to move parallel to the coast. There is a significant risk that this system
will become a severe tropical cyclone later Wednesday and curve southwards,
crossing the coast between Broome and Port Hedland later Thursday or early
Friday. The cyclone will travel well inland across the Pilbara and North
Interior as it slowly decays later on Friday and on Saturday.

Weather Situation – Southern and Central Western Australia
A trough is moving east across the South Interior. A high pressure ridge is
building over the central west coast as a weak cold front brushes the southwest
corner. Another moderate cold front is forecast to move over the southwest of
the State on Thursday, followed by a series of weak cold fronts late in the
week, bringing an unseasonal cool to cold southwesterly flow to the south of
the State.

Forecast for the rest of Wednesday 12 April
Showers, rain and squally thunderstorms over the northwest coastal Kimberley
with heavy rainfall and strong winds possible although likely to remain
offshore, depending on the movement and development of Tropical Cyclone Ilsa.
Showers and gusty thunderstorms over the remaining Kimberley, remaining central
and east Pilbara, northeast Gascoyne and northern parts of the Interior.
Showers southwest of a line Jurien Bay to Lake Grace to Bremer Bay.

Forecast for Thursday 13 April
Showers, rain and squally thunderstorms over the southwest Kimberley and
northwest Pilbara with heavy rainfall and damaging to destructive winds
possible, depending on the movement and development of Tropical Cyclone Ilsa.
Showers and gusty thunderstorms over the remaining Kimberley, remaining central
and eastern Pilbara, east Gascoyne, Goldfields, Interior and Eucla. Showers and
southwest of a line Perth to Albany, extending to southwest of a line Kalbarri
to Hyden to Balladonia by late evening. Possible thunderstorms about the South
West Capes. Chance of morning fog across inland parts of the Central West,
adjacent Lower West, western parts of Central Wheat Belt and adjacent Great
Southern.

Forecast for Friday 14 April
Showers, rain and squally thunderstorms over the southwest Kimberley, east
Pilbara and northern parts of the Interior with heavy rainfall and damaging to
destructive winds possible, depending on the movement and development of
Tropical Cyclone Ilsa. Showers and gusty thunderstorms over the remaining
Kimberley, northeast Gascoyne, southern Interior, Goldfields and Eucla. Cold
with showers over the South West Land Division.

Forecast for Saturday 15 April
Showers, rain and squally thunderstorms over eastern parts of the Interior
gradually easing, depending on the movement of Tropical Cyclone Ilsa. Showers
and gusty thunderstorms over the Kimberley and northeast Pilbara. Cold with
showers over the western and southern parts of the South West Land Division.

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

  • Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or
    public phones.

Copyright Commonwealth of Australia 2011, Bureau of Meteorology (ABN 92 637 533
532). Users of these web pages are deemed to have read and accepted the
conditions described in the Copyright, Disclaimer, and Privacy statements
(http://www.bom.gov.au/other/copyright.shtml).