DublinLive reports. La Nina occurs once every couple of years, disrupting normal weather patterns and causing havoc for conditions around the world.The event affected Ireland as the north Atlantic jet stream intensified bringing "cool and unsettled conditions" with it.Meanwhile, Britain will get some October sunshine to bask in today - before temperatures drop over the course of a "cold" weekend.It will feel cold for many under clear skies this morning with patches of fog and frost, before the sun bursts through and brings warmer, pleasant weather for much of the country.But the Met Office is warning that temperatures will fall by the evening, bringing frost in parts.And a "rather cold" weekend lies ahead with chilly nights, and more.
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