Temperatures have tumbled across Ireland during the past 24 hours signalling the first cold spell of the winter season.
Parts of Ulster and north Connacht experienced snowfall last night but the big story of the next 5-7 days will be subzero nighttime temperatures in all but exposed coastal locations. Freezing fog may persist in some sheltered inland locations to keep daytime temperatures there close to freezing.
Social Media has been busy with commentary on the cold spell during the past 24 hours. Here is a selection of images and comments: