Banana growers have copped the brunt of tropical cyclone Mitchell, which continues to weaken as it tracks inland.
The storm weakened to a tropical low before crossing the coast of Western Australia overnight in the Shark Bay area, the Bureau of Meteorology says.
The weather system brought heavy rain and damaging winds to the Gascoyne Region, with Carnarvon recording a 107 km/h wind gust.
It did minimal damage to the town of 5500 people, 900km north of Perth, but the local banana crop copped a beating.
Co-op boss Doriana Mangili says about half of the district's crop has been wiped out.
"We've had very significant damage to the bananas," the business manager of Sweeter Banana Co-operative Inc told AAP on Tuesday.
"Some patches completely wiped out and others with really significant damage.
"It's pretty devastating."
Carnarvon is a major agricultural and horticultural hub, worth about $100 million per year.
Known as the "food bowl" of WA, it's located on the Gascoyne River and produces about two-thirds of the state's banana supply, along with mangoes, and other fruit and vegetables.
Sweeter Banana Co-operative growers produce about 60 per cent of the district's annual crop.
The blow to production is likely to impact banana prices at the cash register until the new trees bear fruit in about 18 months.
It follows a recent heatwave that claimed 20 to 30 per cent of the crop and a frosty winter that slowed production.
"It just seems to be a pile on of weather events," Ms Mangili said.
In 2015, Tropical Cyclone Olwyn destroyed the region's banana crop, which is grown on about 180 mostly family-run farms.
Mitchell slid down the WA coast as a severe category three system over the weekend, before weakening to a category two on Sunday.
It brought wild weather but little damage to towns dotted along the rugged coastline and was further downgraded to a category one on Monday.
It weakened below tropical low strength on Tuesday and continues to track inland towards the Central West and Central Wheatbelt regions.
A severe weather warning has been issued for both heavy rainfall and damaging winds across parts of the southern Gascoyne, the Central West and the Central Wheatbelt.
Gascoyne Junction recorded 132mm of rainfall from 9am Monday to early Tuesday, and Shark Bay recorded 104mm.
More than 2000 properties remained without power on Tuesday in Karratha, Exmouth and Carnarvon.
