Significant injuries have been caused after two road traffic collisions in the Omagh area.
Cutting equipment was used to rescue casualties.
The Northern Ireland Fire and Rescue service said the incidents had the potential to be much worse.
They have advised motorists to take care on the roads and drive to the conditions.
Man charged with murder of Amy Doherty
New medical reports on Eleanor Donaldson submitted, court hears
MLAs set to be recalled over cancellation of special school summer schemes
Murder investigation launched after death of man in Portadown
Minister looking at ‘contingency plans’ for special school summer scheme