Ireland's meteorological service is not able to pinpoint where it's snowing and how deep it is, as automated observation stations sometimes confuse snow with rain and fog.
Snow is being reported all around Ireland, with people in Sligo, Donegal, Tipperary and Offaly all reporting waking up to white outside.
However, Met Eireann's automated stations are not able fully analyse the snow, according to a spokesman.
"[The automated stations] don’t give much in terms of snow [and] don’t measure depth," he said.
"Sometimes it says it’s snowing if there’s fog."
A forecaster for Met Eireann said they combine all the information that they get, but it doesn't get the depth of snow.
"No person there to say that’s snow or that’s rain. [They're] not as reliable as a human being," she said.
"First snow of the year is always a dramatic looking thing. It shouldn’t be that much of a surprise to people."
The first snow in Cork didn't last long this morning, to the disappointment of schoolchildren in the rebel county.
Sleet showers turned to snow on higher ground in Cork city, north Cork and parts of west Cork.
However, it vanished within minutes despite the south-west being gripped by icy temperatures and grey skies.
Snow was briefly evident in Upper Rochestown, Cobh and areas around the Galtee Mountains in north Cork.
Met Office officials warned that sleet showers may turn to snow in higher areas but Ireland can expect heavy showers for the next few days as an Atlantic storm front continues to dominate seas around Ireland and the UK.