This hasn't helped with the situation in the Northeast US. All American flights from Montreal (YUL) to JFK after midday have been cancelled and I've been rebooked on the direct flight from YUL to LHR which is now scheduled to be about 3 hours late.
I've had to leave the airport and go home - I'll be arriving in London 6 hours later than planned if storms tomorrow morning don't materialise. If they do....