Raymond, Minnesota, a small town on the BNSF Marshall Subdivision, has been evacuated. The Marshal Sub is an ex- Great Northern secondary main line that runs between Willmar and Sioux City. Several ethanol cars are in the derailment and are burning, but not in a spectacular fashion.
There is no such thing as a good time for a derailment, but today is an extra bad time to have one, as they are currently very newsworthy.
All I can say about this one is that it was not caused by train handling. It is not a collision with another train, or with cars fouling the main track, so that points toward possible track mechanical causes. This line has good track, but winter on the northern prairies is tough. There have been a lot of lengthy deep freezes in southwestern Minnesota this year, and that kind of an environment can cause steel to become brittle and hidden defects can cause things to break.
Anyway, the town is not on fire and ethanol burns cleanly, so those are fortunately not factors this time.