According to AA Roadwatch, Conditions are beginning to deteriorate in Louth, with heavy snow and winds picking up.
The status red weather warning has been extended until 6pm tomorrow.
Earlier, local weather expert Louth Weather gave an update of what to expect tonight:
"I've been talking to people today that seem to think everything is going to kick off at 4pm sharp. Not so. The heavier snow will not arrive until roughly 9pm in Dublin and 10pm in Louth.
"This snow will continue into Friday. Easterly winds will remain strong through all of Thursday night and will only start to slowly ease off around daybreak on Friday."