Rare weather event could bring heavy snow to Ireland
17 Oct 2020
A UK weather expert has suggested that a rare 'La Niña' weather event could have drastic impacts on conditions in Ireland and the UK this winter.
The phenomenon is now present in the tropical Pacific and it could have knock-on effects on the weather acoss the globe.
La Niña is one of the three phases of the phenomenon known as the El Niño Southern Oscillation– the warm phase, La Niña – the cool phase and lastly the neutral phase.
"During La Niña strong trade winds blow warm water towards the west Pacific causing an upwelling of cool water from the ocean depths in the east Pacific leading to variations in global weather," a UK Met Office blog post read.
La Niña can even influence the Atlantic jet stream and our weather here in Ireland and the UK, according to experts.
Professor Adam Scaife, head of long range prediction at the UK Met Office said: “La Niña has a profound effect on weather across the globe with us even seeing impacts that extend across the UK.
“In late autumn and early winter it historically promotes high pressure in the mid-Atlantic, which stops Atlantic weather systems from delivering mild air to the UK, and therefore can allow cold conditions to intensify," Professor Scaife said.
This blocking of mild air would also have big impacts on Ireland and could bring snow and unsettled conditions.
"However, in late winter La Niña can drive a shift of the jet stream towards the Poles increasing storminess and heavy rainfall, while bringing milder conditions," Scaife added.
If you have a story or want to send a photo or video to us please contact the Derry Now editorial team on 028 7129 6600 for Derry City stories Or 028 7774 3970 for County Derry stories. Or you can email firstname.lastname@example.org or email@example.com at any time.
This website and its associated sites are full participating members of the Press Council of Ireland and supports the Office of the Press Ombudsman. This scheme in addition to defending the freedom of the press, offers readers a quick, fair and free method of dealing with complaints that they may have in relation to articles that appear on our pages. To contact the Office of the Press Ombudsman go to www.pressombudsman.ie or www.presscouncil.ie