Total U.S. coal rail traffic for the week ended July 27 declined 7.4% year over year to 81,255 carloads, according to data from the Association of American Railroads.

Year-to-date coal rail traffic declined 6.0% through the week, while total rail traffic for the week decreased 4.4% year over year to 534,498 carloads and intermodal units.

BNSF Railway Co. coal shipment volumes clocked in at 36,214 carloads in the week ended July 27, increasing 3.2% from the previous week's 35,107 carloads but declining 2.5% compared to 37,156 carloads in the year-ago week.

Union Pacific Corp.'s coal shipment volumes this week were at 20,604 carloads, up 3.2% from 19,972 carloads the previous week but declining 10.2% compared to the previous year's weekly volume of 22,935.

Eastern railroad CSX Transportation Inc.'s shipment volumes of coal stood at 15,663 carloads, jumping 2.7% from the previous week's 15,248 carloads but sliding 8.4% compared to 17,108 carloads the same week in the previous year.

Norfolk Southern Corp.'s coal shipment volumes totaled 16,290 carloads for the week, up 4.4% from the previous week's 15,600 carloads but declining 13.9% compared to 18,921 carloads the same week a year ago.

Kansas City Southern's latest weekly coal shipment volume was 2,705 carloads, declining 2.8% from 2,782 carloads the previous week. The railroad serves 10 U.S. states and Mexico.

Data collected by S&P Global Market Intelligence from railroads covers cars originating on their lines during the week and cars received from a connecting railroad during the same week.