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21/10/2021

Weather charts predict Ireland could be plunged into a cold spell by the middle of January

Longer range forecast supports colder weather for end of January and start of February

Carlow Carlow Carlow

Chart shows upper air temps January 18 (Source: Carlow Weather)

Weather charts starting to get interesting in the medium term, according to www.carlowweather.com

Forecaster Alan O'Reilly posted the weather chart pictured above on social meda and said: "Is this is the impact of SSW starting to come into play and will they verify?"

When Sudden Stratospheric Warming brings easterly winds this tends to alter our weather patterns slightly, weakening areas of low pressure and moving our jet stream further south.

This leads to high pressure over the North Atlantic, "blocking" that flow of mild Atlantic air and dragging in cold air from the continent to the east.

He added: "That is the million dollar question for now. Interesting weather model watching but far from certain. (chart shows upper air temps Jan 18)."

‪The longer range forecast supports colder weather for end of January and start of February but Alan added that forecasting beyond seven days has poor accuracy.

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