GREEN BAY, Wis. (WFRV) - Gas prices are expected to spike as much as 35 cents a gallon in the next few days because of a supply shortage in the Midwest.

Last week a pipeline ruptured near Grand Marsh, Wisconsin in Adams County halting a supply of nearly 320,000 barrels of oil per day to refineries in Chicago.

There are also supply problems at refineries in Indiana.

Back on July 17 a  pipeline leak in the Chicago to Green Bay pipeline also caused delays.

While the prices are hard on people's pocket books, many gas stations are actually losing money right now.    

The wholesale cost of fuel is up more than 40 cents in the last five days.    

Gas stations can only legally change their prices once in a 24 hour period, tomorrow morning we could be looking at gas close to $3.90.

We spoke with one local station owner who has never seen such a dramatic increase.

"Get it while the getting is good" says gas station owner Tom Matuszak.

His five locations all raised prices Thursday.

However, at $3.69 he is losing money.

"If you buy fuel today it's $3.79 my cost. We would like to be about $3.89 just to break even, $3.99 to pay my bills" explains Matuszak.

"Legally with the 6% mark-up law our gas should be at $4.10 a gallon but the law also says you are allowed to match your competition if they are below that law".

For now stations are happy simply to have gas to sell.

Fuel trucks in Green Bay are not able to fill some customers orders.

"They have been doing split loads to get all the stores gas, bringing half a load so at least you get gas. There is a supply issue" says Matuszak.

The cost of ethanol, a gas additive, is also up 17 percent.

It is made from corn which is hard to come by because of dry weather across the nation.

"I can't afford to drive around like I used to" says one customer. "Now it's just that you go for the important things".

Another driver chimes in " What else are you going to do? Where else are you going to get it".

Customers are not the only ones frustrated.

Store owners say skyrocketing prices impact their bottom line.

"If a guy has 20 bucks it's all going for gas he's not coming in and grabbing a soda or Gatorade or something" says Matuszak.

Ready for the good news?

"I think we can confidently say this is going to last a few weeks in September. Demand is going to go down even more, supply is going to go back up. Luckily this is short term" says Jack Simono, AAA Field Manager.

To check gas prices in your area click here.