Iggy has indirectly affected WA over the past few days, particularly the Kimberley and Pilbara districts.

The system has directed huge amounts of moisture into the monsoon trough which is positioned over the tropics.

This moisture has led to torrential downpours over exposed coastal locations to the north of Broome.

Cygnet Bay gained a further 170mm in the gauge to 9am, bringing the rain total for the last four days to a whopping 728mm.

This is the wettest period in its 48 years of records.

Further south, Exmouth gained 61mm to 9am, small by comparison but still the wettest in close to a year.