National Coverage The colour-coded warnings system was introduced in Met Éireann in April 2012 with the first official warning issued on 26 April 2012. This file contains all national, yellow, orange and red-level warnings issued from April 2012. Warnings are issued on a county-by-county basis. Further information on weather warnings can be found at www.met.ie/weather-warnings. There is a separate row for each warning with the following column headers: Issue Time, Valid From, Valid To, Warning Colour, Warning Element, Where To Text, Warning Text, and separate columns for each county. PLEASE NOTE: there may be errors, omissions or duplications in the data.