The other way around, that the outside air pressure is going to over-take that of the cabin unless the cabin gets recompressed at a rate unpleasant to the pax. Specifically, it means that the re-compression rate of the cabin is higher than 1800ft/min if cabin pressure intercepts outside pressure upon landing. The pressure intercept is managed by the system automatically based on key inputs, one of them the descent rate of the ac. The warning indicates that the pax are heading for an ear pop.
So if the cabin pressure is at 8000ft, this warning suggests that the a/c is descending at a rate such that it would hit the water in less than 4.5 minutes, correct?
Or could this warning also be a result of bad air pressure data from iced-up probes?