Metro-North is reporting delays Saturday morning because of wet, crushed leaves on the tracks.

As a result, there are slip-slide conditions on the tracks that require trains to slow down because train wheels could be damaged.

In a 6:13 a.m. advisory, the railroad was reporting up to a 10-minute delay.

Slip-slide conditions are caused by a slimy substance left by crushed leaves on the rails that gets even more slippery after it rains.

Since Wednesday southwest Connecticut has received more than an inch of rain that has brought down many leaves.

“When a train attempts to speed up or slow down, this gelatinous slime can cause the wheels to slip or slide along the rails.” Metro-North said.

“In severe cases, the train will automatically make an emergency stop, because the on-board computer system perceives ‘slip-sliding’ as the train not slowing down when it should,” Metro-North said.

“And this slip-sliding during braking also creates flat spots on the train's wheels, forcing us to take much-needed equipment out of service for repairs.”