Leeton has been named as one of the towns most impacted by storm damage in the last financial year.
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NRMA Insurance has stated more than half the claims on home insurance policies in the Murray-Murrumbidgee area stemmed from storm damage between 2019 and 2020.
The data from NRMA showed the top five towns in the Murray-Murrumbidgee region to be affected by storms were Griffith, Leeton, Wagga, Temora and Albert Park + Narrandera (equal).
Research by the insurer suggests around 1.3 million homeowners across the state are unprepared for severe weather expected during the 'storm season'.
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"With Australia currently experiencing a La Nina weather system, we could see more severe storms and more intense rain hitting NSW throughout storm season this year," NRMA Insurance executive general manager Luke Gallagher said.
"The fact that over a million households in NSW may not be prepared for severe weather and dangerous storms this summer is a major concern."
Steve Mortlock is an SES unit commander in the MIA and said the easiest way to prevent storm damage was through maintenance.
He encouraged residents to not only prepare their properties for storms, but also sign up to their local SES group.
"That's why people join the SES, to help out people in their time of need," Mr Mortlock said.
Residents should ensure there's less need for the SES to be called by clearing gutters, checking to see if downpipes are clear and pruning trees around the house.
"The thing that seems to happen a lot is water going into the home because gutters aren't clear or stormwater pipes are blocked," Mr Mortlock said.
"An easy way to check is to put a hose in your down pipes and see if the water flows out onto the street. If you've got big trees on your property, you've got to maintain them."
Mr Mortlock said falling tree branches could cause significant damage and injury and could be worthwhile getting a tree surgeon to prune.
NSW SES Commissioner Carlene York said severe weather can happen at any time, so readiness is crucial.
"Our volunteers are always ready to spring into action and help when needed," Commissioner York said.
"But it is equally important that communities do their part . . .
"Simple steps like removing loose items from your front and back yards, keeping cars away from trees and powerlines, or undercover where possible, and being equipped with an emergency kit can make all the difference."