the highest temperature recorded in the UK since July 2015 was recorded, a
Cooler, denser, air from the downdraught of a thunderstorm meeting warmer air at the surface can lead to further developments. The thermal boundary between cooler and warmer air highlighted on the plots from the WOW observations pinpointed where further heavy showers and thunderstorms would develop over the coming hours. An hour later the thunderstorms had developed further and the radar image looked like this:
ut by late afternoon intense thunderstorms had developed in this area:
There were other factors that led to the development of these thunderstorms, in addition to those discussed above, and Met Office Meteorologists would have been using all the different sources of information available to them to monitor the situation. The analyses drawn up from the WOW observations are just one of many tools our Meteorologists use, but the observations provided by our voluntary observers are certainly being put to good use.