Issued 4th June 2018. A large area of Severe Weather with damaging winds to possibly destructive winds, heavy rain and very high possibly extreme fire dangers is forecast to hit Perth and many parts of Western Australia on Tuesday. Heavy rain is forecast to continue across Central West parts on Wednesday and Thursday. 

SEVERE WEATHER ALERT 1 for Damaging Winds, Very High to possibly Extreme Fire Dangers, Severe Storms with Damaging to possibly Destructive Winds for Perth, Central West, Southern Gascoyne, Goldfields, Central Wheat Belt, Lower West, South West, Great Southern, Southern Coastal and South East Coastal districts from Geraldton to Esperance inland to Kalgoorlie on Tuesday. Damaging Northerly winds to 110km hr developing ahead of a cold front with winds turning Westerly during the afternoon. Very high to extreme fire dangers. Rain and storms developing in the afternoon some possibly severe with damaging to destructive winds to 125km hr. 
SEVERE WEATHER ALERT 2 for Heavy rain with 24 hour daily falls to 100mm leading to flash flooding through Gacoyne and Pilbara districts between Denham and Port Hedland including inland areas on Tuesday, Wednesday and possibly Thursday. Below image damaging winds in Red and Purple during Tuesday via

A low pressure trough will cause scattered showers and isolated storms across South West and Central West parts of the state on Monday night.
The trough will merge with a cold front on Tuesday generating rain and storms across South West and Central West parts of the state. Heavy falls up to 100mm are likely across the Gascoyne and Southern Pilbara districts during Tuesday with flash flooding possible. Damaging Northerly winds will develop along the trough during Tuesday before turning Westerly on Tuesday afternoon. Very high to Exteme fire dangers across the South West and Central West parts of the state. Some storms may be severe with damaging to destructive winds from Exmouth to Esperance. A band of scattered showers, rain and storms is expected to reach the South West on Tuesday morning then the Westerly front will move through around midday. 

On Wednesday and Thursday the Westerly onshore flow will cause scattered showers across most Southern districts with rainfall totals of 30 to 60mm from Perth to Albany. The coastal trough will slowly move North along the Pilbara Coast causing Heavy Rain and possible flash flooding with daily totals to 100mm possible between Denham and Port Hedland inland to Tom price and Meekathara. Below image rainfall totals via Pink 100mm, Blue 50mm, Green 25mm.