Quarry or construction blasting
Permitted blasting produces a muffled thump and ground shake that arrives before the sound.
How to tell
- Ground shake noticeably leads the sound
- Muffled thump rather than a sharp crack
- Happens at roughly the same time of day, on weekdays
- Always from the same direction
When it usually happens
Weekday working hours, rarely evenings or weekends.
Heard one just now?
Report it and we will tell you what it most likely was. More reports from different directions make it far easier to pin down.
Report what you heard