Met Éireann has issued two national status yellow alerts for low temperatures, ice and dangerous conditions.
The first status yellow alert for ice runs from Wednesday midnight to Thursday noon.
The weather forecaster warned of dangerous conditions as “a band of winter precipitation” descends south, with the possibility of black ice/freezing rain on surfaces.
A second status yellow alert for low temperature and ice will run from 10:00 p.m. Thursday to 10:00 a.m. Friday.
“Dangerous conditions. A sharp to severe freeze with frigid surfaces as temperatures drop far to -4C,” said Met Éireann.
The UK Met Office has issued a status yellow ice warning for Northern Ireland from midnight Wednesday to 6pm Thursday. It said: “Some disturbances are likely due to icy surfaces.”
Meanwhile, Met Éireann has also issued a nationwide weather advisory for cold conditions, which will run until next Monday 12 December.
Road users have been urged to exercise caution in the coming days, as Met Éireann meteorologist Andrew Doran Sherlock said the “most severe impact will be driving conditions”.
“Which could be tricky in places on Thursday morning, especially during commute times,” he added.
“Very cold conditions will occur as an arctic air mass moves south and stretches across Ireland. Daytime temperatures will struggle to reach the low single digits. Air temperatures will fall widely to -4°C or -5°C at night and fall lower locally, with ground temperatures expected to drop further.
“Winter showers with hail, sleet and snow are expected which will create dangerous conditions on trails and roads. Freezing rain is also possible, which can lead to black ice.
“Fog and fog will also be a feature of the nights and with very light winds over the weekend, widespread and dense fog is expected, lingering in some parts for most of the day. Ice fog is also a possibility.”
Meanwhile, today will be another cold day with some chilly patches clearing up this morning, Met Éireann has forecast.
It will be a mostly dry day with persistent sunshine, cloudier with some showers near the south and east coasts.
It stays cool with maximum temperatures between 4°C and 8°C, with mostly light north breezes.
It will become very cold overnight with widespread frost as temperatures generally drop to -3°C to 1°C.
With a light north wind, there will also be some haze and fog in the south. It will be mostly dry and clear but will later become cloudier with isolated showers in the northwest, some may become wintry, particularly at higher elevations.
Wednesday will be a cold day with maximum temperatures between 2°C and 4°C, with light north-west winds or changing winds.
It will be dry and sunny in most places but there will be scattered showers across Ulster and Connacht in the afternoon and evening as the weather turns increasingly wintry as snow is possible at higher levels.
There will be widespread sharp frosts overnight with lows between -3C and 1C with ice on untreated surfaces.
Winter showers move south across the northern half of the country overnight and temperatures rise slightly with rain, sleet and snow in some areas making for very freezing conditions.
Thursday will be very cold with temperatures just above freezing in some areas with highs between 1ºC and 4ºC, generally with light northerly breezes.
Scattered bursts of rain, sleet and possibly some snow over higher ground will gradually press across the south of the country.
Sunny intervals and a few isolated wintry showers will follow, which will be limited to coastal sections in the course of the afternoon.
It will be another bitterly cold night with widespread severe to severe frost and some patches of ice.
Minimum temperatures range from -4°C to -1°C with light northwest to west breezes.
Most areas will be dry and clear, but there will be intermittent wintry showers, mainly near the north coast.
Friday will remain very cold with temperatures again struggling to reach between 1ºC and 4ºC with a light westerly breeze.
Most of the country will remain dry and fairly sunny, but wintry showers will persist near the coast, particularly in the west.
https://www.independent.ie/weather/ireland-weather-met-eireann-forecast-major-temperatures-fall-in-ireland-as-snow-to-fall-this-week-42198213.html Ireland weather: Met Éireann issues status yellow warnings for ‘low temperatures, ice and dangerous conditions’