BNSF 7678 (ES44DC) runs past the silo at Roggen, Colorado as it heads west on the Brush Sub towards Denver.

BNSF 6022 (ES44AC) runs west on the Brush Sub into the sunlight as storms darken the skies to the east of Roggen, Colorado.

BNSF 3945 (ET44C4) runs towards Roggen, Colorado on the Brush Sub as dark storm clouds develop in the background.

Z in Storm Light Daily and held for 45 minutes the Z, Denver bound flies the mile through Roggen amid receding severe weather.

BNSF 3945 (ET44C4) races thunderstorms at Roggen, Colorado, passing a silo while running to Denver on the Brush Sub.

BNSF 6022 (ES44AC) in 25th anniversary markings tries to outrun storms on the Brush Sub at Roggen, Colorado.

Rapid Development Z CHIDEN3 09 with BNSF 3971 moving with speed restrictions over high wind warnings near MP.500 with supercell V3 with 1” radar indicated hail tracking ESE at 24kts wa... (more)

BNSF 7678 (ES44DC) leads a freight past the silos at Roggen, Colorado.

BNSF 7678 (ES44DC) leads a mixed freight through Roggen, Colorado as it heads to Denver on the Brush Sub.

BNSF 6341 (ES44AC) waits out the storm on a siding at Roggen, Colorado.

BNSF 6341 (ES44AC) sits in Roggen, Colorado, waiting for the expiration of a severe storm warning that has spawned hail, a tornado warning and a hold on all rail traffic.

A golden sunrise catches the California Zephyr running past a silo in Roggen, Colorado as it heads to Denver on the Brush Sub.

BNSF 4234 (ES44C4) waits for a green signal at Roggen, Colorado.

The California Zephyr runs towards Roggen, Colorado as a bright orange sunrise crests the horizon.

The California Zephyr 5 train heads towards Roggen, Colorado at sunrise.