The example below details an event that happened in Northern Ireland. It would have generated a yellow warning of snow with the new warning service.
Weather situation on 26 February 2004
Cold air moved south across much of the northern half of the UK during the early morning of 26 February. This introduced arctic air with snowfalls affecting Northern Ireland during the morning rush hour, bringing some temporary disruption.
Between 0700 UTC and 1000 UTC 3 to 6 cm of snow fell affecting many northern and eastern counties of Northern Ireland.
The fact that overnight treatments had been applied to most of the main road network meant that traffic, while much slower than normal, kept moving. The morning snow was more of a travel inconvenience than disruptive and as such illustrates why this would be more typically classed now as a yellow snowfall event rather than amber.
Snow lying on a road
Based on the new warning system the following assessments would have been made:
This would have resulted in a yellow warning for snow:
Last updated: 26 March 2012