The intensity of the storms varied greatly, but in the worst affected areas brought strong winds, heavy rain and hail.

Bureau of Meteorology WA severe weather meteorologist Joe Courtney said multiple storms hit the state, across a wide span from the north to the south.

Mr Courtney said reports indicated that the northern Wheatbelt region had received the most significant rainfall from the storm.

“The rainfall itself was not that significant, it was more the intensity because it fell in such a short amount of time,” Mr Courtney said.

“We’ve had reports of damage of wind and hail, with hail from 2cm up to 4cm in size and strong winds of up to 110km/hour.

“However there could have been stronger winds as it is very unusual that we would get to measure the peak gusts.”

CBH Kwinana east zone manager Allan Walker did not have exact figures for how many hectares had been affected by last week’s storm, but said losses would be significant.

“We could lose up to 15,000 tonnes of grain from the Kodj Kodjin to Nembudding area,” Mr Walker said.

“We have just heard that Mukinbudin has also had some damage, so we could lose up to 8000t there as well.”

Geoff Ryan, North Baandee, experienced firsthand just how intense last week’s thunderstorms were when he was stuck in the middle of it.

The Ryan family’s property, Hinemoa, was one of the hardest hit in the storm, with 80 per cent of their 4500 hectare cropping program completely wiped out by hail and 60mm of rain falling in about 20 minutes.

Three of the houses on the property were damaged and rendered unlivable as the strong winds lifted tiles from roofs, making way for heavy rains to collapse ceilings.