Parts of Connacht, Ulster and Leinster set to see disruptive snow on Saturday morning
Snowplowing on Glenveagh road in the mountains off Co Donegal 30th December- image by travellernorthernirelan
Parts of the northwest and north look set to see some disruptive snowfall on Saturday morning.
On Friday night and Saturday morning a band of rain associated with area of low pressure of the west of Ireland will feed in across Ireland.
As the band of rain move in across Ireland it will hit colder air across the west, north and east of the country and turn increasingly to snow for many areas away from south/west Connacht & Munster.
The 4 charts on this image above shows the the band of rain turning to snow as it moves across Ireland on Saturday morning turning to snowfall in places.
GREENS - Light/Moderate/Heavy rain
ORANGE - Light/Moderate/Heavy mix of Rain/Snow/Sleet
BLUES - Light/Moderate/Heavy Snow
As you can see that rain moves into the west and northwest on Saturday morning just after midnight it starts to turn to Snow as it moves west to east across Connacht, Ulster and Leinster. The latest ECMWF model run which are the charts attached as well as other models today and the last 3 days show some much the same with parts of the northwest and north in particular possibly seen 5 to 7 hours of moderate snowfall as the band clears.
STATUS YELLOW SNOW RISK
SATURDAY MORNING
(Not unusual weather. Localised Snowfalls)
Note this is not a warning
UPDATE
Another Atlantic frontal system will move in across Ireland on Friday night and Saturday morning with colder air sitting across the west, north and east this rain will turn increasingly to sleet and snow as it hits the colder air and freezing temperatures giving snow accumulations widely of up to 5cm especially across north/east Connacht, Ulster & north Leinster. Away from these areas the risk will be less with some parts of the east perhaps only see a trace amounts of snow to a few centimeters depending on how the front holds together by the time it reaches that far. Strong winds may give blizzard conditions and drifting.
See below the orange risk
Valid: 00:00 Saturday 13/02/2021 to 12:00 Saturday 13/02/2021
Issued: 21:00 Wednesday 10/02/2021
Updated: 14:30 Friday 12/02/2021
STATUS ORANGE SNOW RISK
SATURDAY MORNING
(Infrequent. Dangerous/disruptive Snowfalls)
Note this is not a warning
UPDATE
Disruptive Snowfall looks set to effect some areas within the orange zone on the risk map on Saturday morning. The latest guidance show accumulations of up to 5cm for many areas but some places on lower levels may receive between 5cm to 10cm with between 10cm to 20cm on higher ground areas and on the mountains. Strong winds may give blizzard conditions and drifting.
A orange risk zone has also been included for the southeast of Ireland for higher ground areas of Wicklow with some accumulations of between 5cm to 15cm possible there also especially across areas like Sallys Gap.
Valid: 00:00 Saturday 13/02/2021 to 12:00 Saturday 13/02/2021
Issued: 21:00 Wednesday 10/02/2021
Updated: 14:40 Friday 12/02/2021
It will be also rather windy with strong southeasterly winds tonight and Saturday morning which will add to the risk especially anywhere snow is falling creating blizzard conditions and drifting.
Some parts of the Northwest and north may see further warning updates some areas likely to see snowfall within the Orange or Amber snow/ice Criteria.
WEATHER WARNING CRITERIA
STATUS YELLOW Snow/Ice
3cm or more in 24 hours
STATUS ORANGE Snow/Ice
3cm or greater in 6 hrs
5cm or greater in 12 hrs
10cm or greater in 24 hrs
SNOW/ICE WARNING
STATUS YELLOW - SNOW/ICE WARNING FOR CONNACHT, LEINSTER, CAVAN, MONAGHAN AND DONEGAL
Met Éireann Weather Warning
Snow accumulations of 5 cm possible (more on higher ground), accompanied by fresh to strong southeast winds.
Valid: 02:00 Saturday 13/02/2021 to 12:00 Saturday 13/02/2021
Issued: 12:00 Thursday 11/02/2021
STATUS YELLOW - SNOW/ICE WARNING FOR TYRONE, DERRY, FERMANAGH, ANTRIM, ARMAGH & DOWN
Met Office UK Weather Warning
A band of snow is likely to arrive into Northern Ireland during the early hours of Saturday, then move east into parts of England, Wales and Scotland through the day. Not all areas will have snow, but where it does fall 1-4 cm are possible widely, with 5-10 cm, perhaps up to 15 cm over high ground. In addition to snow, some freezing rain may also fall in places, leading to very slippery conditions. Across Northern Ireland, snow is likely to turn to rain during the afternoon.
Valid: Saturday 13/02/2021 to 23:59 Saturday 13/02/2021
Issued: 11:12 Wednesday 10/02/2021
RAINFALL WARNING
STATUS YELLOW - RAINFALL WARNING FOR CORK, KERRY AND WATERFORD
Met Éireann Weather Warning
30 to 40 mm of rainfall with strong to gale force onshore southeast winds. River and coastal flooding risk.
Valid: 00:01 Saturday 13/02/2021 to 12:00 Saturday 13/02/2021
Issued: 12:00 Thursday 11/02/2021
WIND WARNING
STATUS YELLOW - WIND WARNING FOR DONEGAL, GALWAY, LEITRIM, MAYO, SLIGO, CLARE, CORK, KERRY AND WATERFORD
Met Éireann Weather Warning
Strong southeasterly winds tonight, with mean speeds of 50 to 60 km/h and gusts to 90 km/h. Where winds are onshore there is a risk of coastal flooding.
Valid: 21:00 Friday 12/02/2021 to 09:00 Saturday 13/02/2021
Issued: 12:00 Friday 12/02/2021
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