Heavy snow falls as UP 6657 (AC4400CW) leads an oil train through a corner at Tolland, Colorado, heading east on the Moffat Tunnel Sub.

UP 6657 (AC4400CW) rounds the corner in heavy snow at Pinecliffe, Colorado.

Snow during springtime in Colorado’s high country is nothing new or unusual. On April 27, 2024, an eastbound Union Pacific coal train heads downgrade between Tolland and Rollinsville along South... (more)

UP 6657 (AC4400CW) runs through heavy snow on the Moffat Tunnel Sub as it heads towards Rollinsville, Colorado.

A spring storm is dropping a foot of wet snow on the Moffat Tunnel Sub as UP 6657 (AC4400CW) runs through Rollinsville, Colorado.

Heavy snow from a spring storm is falling on the Moffat Tunnel Sub as UP 6657 (AC4400CW) runs through Tolland, Colorado.

Wet, heavy snow from a spring storm is falling on the Moffat Tunnel Sub as UP 6657 (AC4400CW) runs towards Pinecliffe, Colorado while leading a loaded coal train for Denver.

UP 6657 (AC4400CW) runs past South Boulder Creek as it heads towards Rollinsville, Colorado in heavy snow on the Moffat Tunnel Sub.

A winged UP 6657 (AC4400CW) leads a loaded coal train in heavy snow through the signals at Rollinsville, Colorado as it heads down the mountain towards Denver.

A fresh looking UP 6657 (AC4400CW) waits for a train in the North Yard in Denver, Colorado. Notice the missing number board.

UP 6657 looks resplendent in fresh paint as it highballs westbound past the west siding switch at Galva, Kansas.

After sunset UP runs past the old MStL yard.

UP 6657 & 6194 (SP paint) lead westbound empties.

Appearing to have been recently painted and having had new wings applied, UP 6657 is the DPU on an eastbound coal train.

Loaded coal train entering McAlester for a crew change.