replying to Stormsnomore, passerby wrote:
If the swelling is not visible (or minimal), and at least a few hours have
passed, then there is no reason to even touch it. If it were to swell, it
would have done so already. Once it swells, there's nothing you can do except
replace - it will stay warped even after it dries. That said, it is hard to
say which way the water goes between underlayment and the planks. If it's very
recent, and I mean just a couple hours ago, you may still see some more
swelling elsewhere. Not much you can do about it but wait until the event is
over, then assess the damage and replace what's damaged.

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