The Irish Independent today asks ' Is Ireland heading for its longest winter in 50 years?'.
There are some scientific/meteorological reasons to suggest that the building blocks for a colder than average winter to verify are in place. They include record-breaking cold seas surface temperatures in the North Atlantic, entrenched early season cold in Russia and soon Eastern Europe, a strong El Nino, and periods of High Pressure blocking in recent weeks dragging in a polar continental airmass across Ireland and Britain.
But - strong El Ninos and cold Atlantic waters have come and gone without record breaking cold occurring in this part of the world in the past. For example, the strong El Nino year of 1991-92 winter season saw Oct-May in Ireland/Britain producing warmer than average conditions.
The below UK Met Office data shows strong/very strong El Nino years (circled in red) not exactly supporting the circulating theory of impending record breaking cold.
Furthermore, this UKMO plot confirms the relationship between the El Nino and cold winters in Ireland doesn't hold for STRONG events.
The Irish Independent article bases its article on the fact that
migratory birds have migrated to this side of the world. Nothing too
unusual about that you might think. The birds in question migrate to
the UK every year and have arrived early for two reasons. Easterly winds
have been persistent in recent weeks meaning that they have decided to
take off west while the going is good (easier flight than the flight
they normally make against westerly winds). The other reason is that
Siberia has seen winter kick in rather early. Eastern and central Europe
too will experience some snow over the next few days. Many other
similar newspaper articles have appeared in recent weeks with no
evidence other than supposition to claim that Ireland is set for its
coldest winter since 1963.
It should be noted that this is a pattern that arises in our media every year. Why? Statistics show that a newspaper tends to sell more copies if it contains a weather story.
As for signs provided by nature, I am not a big believer in this. Nature
responds to pats and present conditions as opposed to future climate
changes. You see how the Donegal Postman uses nature as his guide and he
has as bad a track record at forecasting as the Moon Man from New
Zealand. Moon cycles alone do not provide accurate weather forecasts nor
can they predict earthquakes as is claimed. Last year, we had a huge
crop of berries and fruit in the autumn which some people and the media
said was a sign of a harsh winter on the way. In fact, the media here
reported that it would be the coldest winter in a century. It turned out
to be one of the mildest in years. They say the natural world has been
used as a forecasting tool for millennia which means that people went
out without their coat and got wet for thousands of years.
Science as opposed to pseudoscience is by far the more reliable approach
to forecasting our weather. All we can do is look at the now and
forecast for the short term up to a period of 10-14 days at most. Met
Éireann has admitted as much while the UK Met Office gave up the chase a
few years ago. Beyond the reliable forecasting period, the world
climate has so many variables in motion that a butterfly flapping its
wings in the Amazon may just kick-start a succession of Atlantic storms
this winter, or so 'they' say.
Is it time to file Long Range Forecasting under 'entertainment' rather
than 'science'? Are weather forecasts based on the sight of roadside
hedges drooping with the weight of autumn berries or a fox doing the
Siege of Ennis with a mountain goat on the slopes of Errigal old wives
tales? The doom merchants predicting snowmageddon may turn out to be
correct this year. However, it will be by chance rather than design.
After all, a stopped clock is correct twice a day.
