Met Éireann has issued a nationwide snow and ice warning as a “polar low” sweeps over the country over the next two days. The yellow alert comes into force on Friday at 5 am and will remain in place until midday on Saturday. Snow showers are expected across the country during the alert, but the heaviest snowfall is forecast for counties in Connacht and in Ulster. Met Éireann said this “polar low” would begin to track down the country from the North. Friday and Saturday are set be bitterly cold, with widespread frost and ice and temperatures falling as low...