Dear John, I agree that the rate of sea level rise has been underestimated by the best models.  Planning for the most part moves from outright denial to mild increases.  As you report, the best models have undershot the severity of the situation.  I think that is because the models are viewed statically (limited and unchanging for a long period of time) not taking into consideration that the accelerated rate (speed) is dynamic and has never been proven to be linear. Your observations generally state that sea level rise is moving faster (height) and at a faster rate (time).  Higher and faster than projected. You are like many other people that have commented.  It is troubling and gives one reason to be concerned.  I want to be optimistic.  I want the earths heat engine turned off.  But that is unlikely. I enjoyed your comments.  Thanks.