On Mon, 04 Jan 2010 19:09:27 +0000, Dave Cornwell wrote:

They do a similar thing here Ken - they give a warning for Essex, then
have a separate warning for Thurrock, which is just a district in the
south of the County. I've never understood why it is singled out. Dave

It's because the warning system is based on top-level local authorities.
Since Thurrock is a unitary authority, it gets its own region. This is
done inflexibly, so that - for example - Nottingham and Nottinghamshire
are two different warning areas, whereas the vast Highland area cannot be
subdivided. I'm not really a fan of doing it this way, but am not sure
what alternatives (if any( exist that would be immediately recognised by
the general public

--
Bewdley, Worcs. ~90m asl.