The Weather Bureau is forecasting thunderstorms this afternoon across parts of the Central West, stretching from Wongan Hills to Moora, Mullewa to Murchison and from Cue to Mount Jackson.
A high pressure system is being blamed for the bad weather conditions, which are expected to carry through to early evening.
The Bureau of Meteorology Duty Forecaster Mark Paul says residents are likely to experience strong winds and heavy rainfall with the possibility of hail.
"That high pressure system will move into the bight during this evening and that will persist there for the next four or five days," he said.
"That does have the potential for severe thunderstorms."
The Department of Fire and Emergency Services has issued a warning to residents to get ready ahead of the storms.
They recommend storing and weighing down loose objects and ensuring medical kits are on-hand complete with battery-operated radios, torch and batteries.
They have warned against travelling in the lead-up to the storm.
© ABC 2012
15:55 EST Two teenage girls have been taken to hospital after lightning strikes near their school oval in Sydney's south-west.