Blocking in autumn
"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
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snip
In the last 10 years we have had major blocks in October on:
4-20 Oct 1994
17 Oct - 4 Nov 1997
30 Sept - 8 Oct 1998
11-22 Oct 1999
5-21 Oct 2002, which some of us seem to have forgotten
already.
Using the EWP data and MS Excel to calculate the 30 year rolling average for
September and October and assuming a dry month is one with rainfall less
than 80% of the rolling 30 year average, the last time we had a September
and an October (assuming there are no downpours before the 31st) with
rainfall similar to this year was 1985 - 18 years ago!
Victor
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