Yes, I was on a flight from LHR to JFK in early January in I think 2018, and a blizzard hit NYC worse than forecast while we were en route. JFK, La Guardia and Newark all filled up with parked planes, other colleagues travelling to NY had their flights diverted to Atlanta and Denver, but ours kept circling for three hours over NY hoping for a gap in the weather — and we finally handed at 2 am in Newark. The reason I remember is that a colleague on my flight fell and hurt her head and i ended up having to sit with her in First to make sure she wasn’t manifesting any odd symptoms.