Firefighters are battling a large gorse fire in the Mourne Mountains.
Northern Ireland Fire & Rescue Service (NIFRS) said eight pumping engines and 64 firefighters were attending the incident on Leitrim Road, Hilltown.
People are being asked to avoid the area completely, and residents have also been told to keep their windows and doors closed while the incident in ongoing.
NIFRS said the operation would be ongoing throughout the day.
It comes as temperatures in the Hilltown area and around the Mournes climbed above 20C on Saturday.
A thunderstorm warning has been issued for Northern Ireland on Sunday as the sunny weather begins to break.
A rainfall alert has also been issued for Monday and Tuesday.
