Driver Brett McCullough, conductor Donald Dinnie and passenger Christopher Stuchbury were killed in the accident.
Michael Matheson highlighted the "very intense rainfall" in the area and said an increasing number of weather events are impacting the rail network.
"Its detection is proof that our surveillance system is doing its job."
Olivia Nalwanga and her two-week-old son Zeus were last seen on Saturday.
A pet dog has been forced to have emergency surgery after eating sausages filled with nails. Police have appealed for information
Five children and an adult have been taken to hospital after a chairlift derailed at a Scottish ski resort. Three of the
A teenager suffering from a rare genetic condition turning her into a "human mannequin" has refused to be beaten by her disease
An Aberdeenshire family have told of their horror at seeing strange lights hovering in the sky outside their home for 5 and