Oh my word you’re all speaking too technical I’m new here take it easy haha!!
We believe that the "DAMY" cancellation code refers to DAMage to the aircraft, and the Y means that you're entitled to financial compensation for the cancellation as per the EU's legislation. You can find more info about that on this thread: The 2019 BA compensation thread: Your guide to Regulation EC261/2004
There have was a couple of cancellations yesterday and there are further planned for the rest of the week according to BA.com. Not sure if the cancellations were made in recent days or if they are planned
12th March - BA067/BA066 - PHL
13th March - BA175/BA116 - JFK
14th March - BA113/BA114- JFK
15th March - BA283/BA282 - LAX
16th/17th/ 18th March - BA293/BA292 - IAD