A petroleum trade group is monitoring gas supplies in North Dakota in light of the blizzard conditions that have slowed deliveries.

A petroleum trade group is monitoring gas supplies in North Dakota in light of the blizzard conditions that have slowed deliveries.

The Cannon Ball Pit Stop ran out of gas Wednesday. Its owner, Standing Rock Sioux Chairman Dave Archambault II, says the adverse weather has so far prevented gas deliveries.

North Dakota Petroleum Marketers Association President Mike Rud tells the Bismarck Tribune the organization is monitoring the situation closely. Rud says truckers are behind schedule after a difficult week of weather, but he had so far not heard of any widespread problems.

A blizzard this week dumped more than a foot of snow on some parts of the state and temporarily closed hundreds of miles of interstate. The National Weather Service says another system is expected to hit the southern half of the state late Friday.