"Ray Jeffery" wrote in message
...
Thanks for info, strangely it is not very accurate, we are currently
reading 21 degrees C.

.... this is a common misconception. It *is* accurate for where the
figures are - your readings I suspect are taken from much closer to the
shore-line (not clear from the display); this is why the Met Office
isotherm chart, for example, *deliberately* stops the isotherms *away*
from the immediate coastal shelf. There is a considerable gradient of
SST between the shore-line seas and more open water. It is the *latter*
that forecasters need to know for convection forecasting etc.

Martin.


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