Negative Tidal Surge

Yesterday while out sailing on the East Coast - and what a lovely day
for it - Thames Coastguard made a securite broadcast warning of a
negative tidal surge in the southern North Sea. The only implications
I can think of is that the bottom might be a bit closer to the keel,
but as it was close to neaps yesterday that shouldn't have been a real
problem. I did a bit of a google but am really none the wiser [the MCA
state how to report it but not really what it is]. Has anyone got any
idea of any other problems other than the water being a bit lower than
normal?

LeeShore wrote:

> Yesterday while out sailing on the East Coast - and what a lovely day
> for it - Thames Coastguard made a securite broadcast warning of a
> negative tidal surge in the southern North Sea. The only implications
> I can think of is that the bottom might be a bit closer to the keel,
> but as it was close to neaps yesterday that shouldn't have been a real
> problem. I did a bit of a google but am really none the wiser [the MCA
> state how to report it but not really what it is]. Has anyone got any
> idea of any other problems other than the water being a bit lower than
> normal?

That's exactly what it is. It means that at any given moment there will
be less water than tidal calculations would indicate. For some
activities that can be significant.

--
Norman