Fire crews in the 'deep response period'published at 11:00 Greenwich Mean Time 24 January
Speaking to BBC Radio Ulster's Nolan Show, fire service group commander Alan O'Neill explains how the service is responding to emergency calls.
"We have quite a significant range of calls right across the province. We have car crashes, we have properties damaged, and we're responding to that," he says.
"We are deep in the response period at this stage, and we have crews working right across the province, and that's likely to continue for the next number of hours.
"We would still encourage people to just think about their journey before they would be going out."