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These final maps use quality controlled data from
the UK climate network of observing stations. They represent
an assessment of the weather that was experienced across
the UK during November 2003 and how it compares with the
1961 to 1990 average. On the ANOMALY maps red
contours mark areas that are above average and
blue contours mark areas
that are below average.
Note about rainfall
return periods:
Return periods relate to the named month only - to
a first approximation you can divide by 12 to get the
'all months' return period. Rainfall amounts greater than
average have positive return periods; amounts less than
the average have negative return periods. E.g. a return
period of -10 means that this is a dry event with a rainfall
that is exceeded ( in terms of dryness ) on average once
in 10 years.
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