The earth did move...

Just before Cathleen and I got up,  we heard a deep rumbling sound, and felt the house (and bed) shake.    

Although neither of us had been in an earthquake before, we both immediately thought that is what we had just experienced, but given where we live we also immediately thought that was unlikely.   Perhaps it had been an unusual type of aircraft or even some particularly heavy road traffic ?  

Then our neighbours texted us, to ask if we had felt it too.   I looked online and found one seismograph near Glasgow that seemed to have recorded something geological at the time and later in the day we heard of other people nearby who believed they had witnessed the same.  

I am back blipping this, as I had to wait until the  definitive British Geological Survey  confirmed  that there  was indeed a small  earthquake in Glendaruel at 7.37 UTC and the location was just across the loch from us. 

At 1.7 on the scale it falls into the "usually not felt" categorisation and is one of millions every year, but it was certainly felt here - perhaps because we were so close to it.    The list that the BGS publish also shows that there had been three such small earthquakes on , or near, Bute in recent weeks. 

So  the incident was not rare, but it is certainly not  what you would expect on  an overcast Sunday morning in Argyll !