Cases and cases of water are being stocked and piled on shelves at the Save-A-Lot grocery store on Ellis Avenue in Jackson.
"Right now they're buying water three to four cases at a time," said Save-A-Lot owner Dan Myers.
Shopper Ruby Nunnery said she bought lots of water and other groceries early while most people were at work.
"I'm stocking up on water, canned goods, things you can eat without heating up and putting it in the microwave," said Nunnery.
Nunnery went through Katrina but said she didn't really plan properly. She said things are going to be different this time around as she waits on Isaac.
"I got all of my emergency stuff out and my mother's out and we're prepping for the storm," Nunnery told WLBT News.
Myers said Save-A-Lot is also preparing for the storm by receiving extra inventory.
"With our warehouse being just North of New Orleans we're trying to stockpile because they'll lose power there and won't be able to ship so we're spreading lots of water between our stores," said Myers.
Shoppers piled groceries into carts at the McDades Grocery Store on Northside Drive in Jackson too. People picked up lots of and non-perishable foods like tuna, crackers, peanut butter and jelly and of course water.
"You have to have water for everything," said shopper Mary Lou Young.
Young said the calm before the storm is the best time to stock up.
"I never wait to the last minute it's just very important to be prepared," said Young.
The owners of Save-A-Lot and McDades said they plan to keep their shelves stocked throughout Isaac.
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