An “explosion” that “left Devon and Cornwall locals confused” was in fact just a sonic boom from an F-35 jet.

In their unimitable style, CornwallLive reported in the article ‘‘Explosion’ on Devon and Cornwall border leaves locals confused‘ that many locals reported a loud bang.

Devon and Cornwall Police also confirmed they’d received a report of a loud bang at 12:15 pm today.

It turns out, it was just an F-35 going supersonic.

A Royal Air Force spokesman said:

“The sonic boom heard in the Cornwall area today was caused by RAF F-35 Lightning aircraft completing operational training inside the supersonic offshore range area, any inconvenience caused to local residents is regretted.

Supersonic flight in oversea ranges is routine. Our F-35s were approx 25 miles off the coast when supersonic today this is completely normal. Such events do not often cause sonic booms to be heard. The climatic conditions today may have been a factor.”

What is a sonic boom?

A sonic boom is a loud sound kind of like an explosion. It’s caused by shock waves created by any object that travels through the air faster than the speed of sound. Sonic booms create huge amounts of sound energy.

You can read more about sonic booms here.

George Allison
George has a degree in Cyber Security from Glasgow Caledonian University and has a keen interest in naval and cyber security matters and has appeared on national radio and television to discuss current events. George is on Twitter at @geoallison

21 COMMENTS

  1. Ha ha ha, Cornwall Live is rubbish and would have you hiding under the bed at rumours of a passing Zeppelin. I work in Bude and heard the boom which was obviously a jet going supersonic.

    • Nice part of the world. I know Bude quite well.

      Maybe the MoD should start basing jets out of Chivenor and St Mawgan again to aid locals with their confusion.

      • Ah the good old days of the 70s and 80s, When Chivenor, St Mawgan and Brawdy were open there was something to watch in the sky almost everyday, Hawks, Hunters, visting Jaguars, Buccaners and Harriers not sure the current crop of locals would have been able to cope with that.

        • They’ve all gone soft, like much of modern society.

          Yes, used to love being with my Grandparents in North Devon with the cottage being overflown by all and sundry at what seemed well below 200 feet every Wednesday and Thursday.

  2. Get lots of people up here in the mythical being’s own country moan about the RAFs noise. Ridiculous. Bit of noise in the sky. Fantastic on clear days to the Hawks and Typhoons.

  3. I was born in Helston which is home to Culdrose
    When i was very young many many moons ago i suppose i was around 7/8 (which would put the date around 1960) i remember whilst playing (yes we played outside in those days and if we didnt come home dirty mum would say what have you been up too )
    Anyway i digress I heard this almighty boom/bang and well cant remember my reaction but when i walked (yes walked remember that ) home i noticed a lot of broken windows ( No double glazing in those days)
    Turns out what i heard was what is known today as a sonic boom
    Culdrose in those days was a fixed wing base
    I will be honest and say i dont know what aircraft it was but it was loud lol

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