Orange areas on map

Discontinued Software Weather Watcher - Support
1

I have noticed areas of orange colour on the sat map (United Kingdom West) today, does anybody know what this denotes or is it just a glitch in the software.
Cheers

2

Does this help? http://uk.weather.com/maps/lifestyles/i … mated.html

3

Many thanks Ed. Hadn’t seen that colour chart before.