With regard to rising sea levels, the latest sober science (2023) establishes that the global sea level is rising about 1 inch every 8 years.
This is from NOAA (US National Oceanic and Atmospheric Administration). NOAA is responsible for the lives of millions of people, in the context of hurricanes and so on. It must neither underestimate the risk to life, nor indulge exaggerations that disrupt the livelihood of millions.
This amount of rising sea level is concerning because of regional complications, such as lack of drainage whence storm floods.
However, 1 inch per 8 years is a far cry from the very many alarmist predictions about rising sea levels made in previous years that have now been demonstrated to be false.
If you are good with NOAA, this is from the first NOAA (2022) report that came up for me on sea level rise:
"Sea level along the U.S. coastline is projected to rise, on average, 10 - 12 inches (0.25 - 0.30 meters) in the next 30 years (2020 - 2050), which will be as much as the rise measured over the last 100 years (1920 - 2020). Sea level rise will vary regionally along U.S. coasts because of changes in both land and ocean height."
11/30 is almost there times greater than 1/8. My guess is that somewhere else the NOAA folks predict the rate to increase as we pass 2050. (Something, something glaciers or whatnot).

2022 Technical Report | Resources – U.S. Sea Level Change
The Sea Level Rise Technical Report is a multi-agency effort providing the most up-to-date sea level rise projections available for all U.S. states and territories out to the year 2150.
