The example below details an event that happened in south-east England and London. It would have generated a red warning of snow with the new warning service.
Weather situation on 2 February 2009
Easterly winds over the weekend of 31 January to 1 February brought in some very cold air from the continent. Heavy snow showers developed over the North Sea which moved inland across eastern and south-eastern areas of England, particularly later on Sunday 1 and Monday 2 February. The snow showers became bands and led to some locations to the south of London seeing level snow depths of around 30 cm. Even in central London, there was up to 10 cm of snow.
The highest official snow depths across south-east England included:
|Alice Holt Lodge, Hampshire||23cm|
|High Beach, Herts||17cm|
|Hampstead, Greater London||16cm|
Aircraft parked in snow
Based on the new warning system the following assessments would have been made:
This would have resulted in a red warning for snow: