5 August 2013
Since its launch in June 2011, the Weather Observations Website (WOW) has received more than 100 million weather observations from weather enthusiasts all over the world.
Part of the website is a photo gallery of images sent in by observers. This striking black and white image of cumulonimbus was taken by Rob Powell from Stonehaven beach on Scotland's northeast coast.
WOW was developed by the Met Office with support from the Royal Meteorological Society and the Department for Education. The site provides an online hub for UK weather observations, which helps educate children about weather and encourages further growth in the UK's amateur weather observing community.
Despite its UK focus, WOW has global coverage and has attracted visits from weather enthusiasts in more than 170 countries.