Donegal is under a Status Orange wind warning this Friday as Storm Callum tracks up the west coast of Ireland.
The worst winds are expected to hit the Donegal coast at around 12noon today.
Met Éireann often share map graphics of Ireland when colour-coded weather alerts are issued.
Image: met.ie
However, many people question why does the extreme weather suddenly stop at the border. If they travel 20 minutes down the road to Derry will it be a summer’s day?
The UK Met Office also share weather maps and coloured warnings. At the moment a Yellow warning is in place for Northern Ireland during Storm Callum.
Storm Callum. Image via metoffice.gov.uk
BBC Weather Forecaster Barra Best has set out to end the confusion over cross-border weather alerts.
He explained that Met Eireann uses a threshold system, while the Met Office uses an impact system. The warning levels differ according to these measurements.
Watch the explainer below:
Ever wonder why weather warnings can differ across Ireland, and why sometimes they appear to end at the border? Here’s why: pic.twitter.com/clU2Z20onn
— Barra Best (@barrabest) October 10, 2018
Video via @barrabest
