Thundery start to June
June so far has provided several days with thunderstorms across parts of the British Isles thanks to a rather slack pressure pattern in humid air - meaning on many days, strong June sunshine heated this humid air to create enough instability for scattered thunderstorms to develop, especially in areas where light winds converged (came together, such as along a sea breeze front) or in areas where hills/mountains are present to provide that bit of extra lift. This led to multiple days with slow-moving torrential downpours causing some local but significant flooding problems, and in some locations on more than just one day.
The map below uses lightning data from the Meteorage detection network, interpolated onto a 6km grid, to calculate the number of days that have produced lightning through this month so far (up to the 19th). The most active spot in the country appears to be around Corby in Northamptonshire with at least 5 days of thunder so far, with a similar level of activity also noted between Buckingham and Silverstone. These areas usually have around 2-3 thunder days in an 'average June', and so have already witnessed twice as many thunder days than normal.
If your work or business is sensitive to lightning strikes, or other hazards associated with thunderstorms (such as strong winds, hail or flash flooding) then Weatherquest can help - contact us to find out how we can be an umbrella for your business...
Dan Holley 20th June 2016