Eyes on the Prize.

Western world but with a twist, each sheriff has a power and owns a town in these parts during the gold rush, but when a Sheriff from another town with the power to see the future explains to our protagonist (A retired sheriff) that in a months time a Meteor will hit in the Midwest and the fallout of it will give everyone in America powers as well, and the aftermath of everyone gaining powers there will be purges and murders beyond comprehension from corrupt and violent people, they must take off and find a group of people who can maybe try and stop the meteor or at the least bring order after the fallout...