Stormy weather is moving over Coal Creek Canyon as the California Zephyr heads into the Colorado Rocky Mountains on the Moffat Tunnel Sub.

Storm clouds are moving down the mountain as the California Zephyr rounds the horseshoe curve in Coal Creek Canyon, Colorado.

Snow clouds greet the California Zephyr 6 train as it escorts two Charger units through Tolland, Colorado on the Moffat Tunnel Sub.

BNSF 9275 (SD70ACe) joins a vintage Cascade Green Burlington Northern SD40-2 as they await service at the engine facility in Denver, Colorado.

Coors Critter #997 (SW1000) moves a cut of grain hoppers through the yard at Golden, Colorado.

Clouds hang at the mountain tops as UP 5624 (AC4400CW-CTE) runs a freight through Coal Creek Canyon on the Moffat Tunnel Sub.

UP 5624 (AC4400CW-CTE) runs a freight south through Leyden on the Moffat Tunnel Sub.

UP 7045 (C44ACM) leads a freight through Platteville, Colorado as it heads south on the Greeley Sub.

UP 8948 (SD70AH) brings a freight into the yard at LaSalle, Colorado.

UP 1820 (SD40N) moves into the yard at LaSalle, Colorado.

The California Zephyr 5 train passes Barr Lake on the Brush Sub at sunrise.

The California Zephyr passes a Colorado Department of Transportation maintenance facility in Coal Creek Canyon, Colorado.

The two Phase VII P-42's lead the California Zephyr through Coal Creek Canyon, Colorado.

The two Phase VII P-42's look great leading the California Zephyr through Coal Creek Canyon, Colorado.

The California Zephyr runs through Coal Creek Canyon as it heads into the Moffat Tunnel District and the Colorado Rocky Mountains.