Key facts about the WA bushfires

WA BUSHFIRES - WHAT YOU NEED TO KNOW

EMERGENCY WARNINGS

* East of Waroona, Hamel, Cookernup, Yarloop, Harvey town and surrounding areas, but not Waroona town

* Threat to lives and homes

WATCH AND ACT ALERT

* Area bounded by Preston Beach, Lake Clifton and north of Waroona

* Area bounded by Waroona in a line west to the coast

* Myalup

* Possible threat to lives and homes

* Residents must leave or get ready to actively defend their homes

DAMAGE

* 121 homes and several other structures lost in Yarloop

* More than 70,000 hectares burnt

* Fire first reported 7.25am on Wednesday

* Caused by lightning

* Three people unaccounted for

* Four firefighters injured

* Declared a natural disaster

* Several recreation sites and roads closed

RESOURCES

* More than 250 firefighters

* Fire perimeter in excess of 222km

* Aerial support assisting firefighters on the ground

* More than 50 appliances, including 38 heavy machines

* Evacuation centres at Murray Leisure Centre and Leschenault Leisure Centre

FORECAST

* Windy and hot

* More lightning possible