On the other hand, I think nowcasting is a very valuable exercise but we
don't do that in this country.


Sadly, the MetO aren't that good at nowcasting. The local BBC weather
forecast is still reporting daily an SST off Cornwall as 11-12, in
fact it's 14-15. www.ndbc.noaa.gov/station_page.php?station=62107 or
perhaps they should look at http://weather.noaa.gov/pub/fax/PTUK21.TIF

The same forecast (18:55 today) gave temperaures over inshore waters
as 12C, in fact at 20:00.

Seventones 16C
Channel Light Vessel 16C
M5 buoy 16C

That is a big difference.

Graham
Penzance