Weather effect on the English Channel
Its a pity the NTSLF site does not have a page about the lumps and bumps
on its plots from the seaiching or sloshing of water in confined
channels . The only time any of their plots is near enough flat is after
a few days of high pressure.

A mysterious windless and no low passing (inverse barometer effect),
0.6m NTSLF surge about midday tomorrow for the Pompey area, what is its
origin?
https://www.ntslf.org/storm-surges/latest-surge-forecast?port=Portsmouth
After previous otherwise mysterious stealth surges, it transpired
(confirmed by a number of repeats ofsuch wind and time delays) that when
strong WNW wind passed over the Isle of Wight area, the wind induced
windstress on the sea surface produces a surge that then reflected
neatly and focussed by the regular curve of the French Pas de Calais
coast, back to the IoW area.
This time its probably the 47mph or so sustained SSW wind, about
22:00 tonight into the straight Brighton-Eastborne coast, induces a
surge, that then reflects off that coast, crosses the Eng Channel to
France and focussed reflection off the Cherbourg-le Havre coast, back
to us, despite that coast being only very roughly curved.
--
Global sea level rise to 2100 from curve-fitted existing altimetry data
http://diverse.4mg.com/slr.htm