The NI Weather and Flood Advisory Service have warned of a large fire in the Glenshane Pass area and urged local motorists to drive carefully.
With temperatures expected to climb as high as 30c in some areas, a forest fire warning has already been issued.
In a statement they said: "There are reports coming in of a rather large fire on the Glenshane Pass.
"Please drive with caution as there are reports of reduced visibility due to a lot of smoke in the area.
"Fire service are on scene."
If you have a story or want to send a photo or video to us please contact the Derry Now editorial team on 028 7129 6600 for Derry City stories Or 028 7774 3970 for County Derry stories. Or you can email [email protected] or [email protected] at any time.