Traffic at a standstill on the A6 outside Claudy.
Heavy snowfall is making driving conditions extremely difficult across County Derry.
Traffic is currently stationary on the A6 between Claudy and Drumahoe.
Other parts of the main road are also hazardous.
It is understood the 212 bus service between Derry and Belfast has also been affected by the weather conditions.
According to the MET Office, further snowfall is expected throughout the day.
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.