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Old June 11th 05, 12:51 AM posted to uk.sci.weather
Michael McNeil Michael McNeil is offline
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First recorded activity by Weather-Banter: Jul 2003
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Default Approx 30-40 day periodicity in synoptic pattern this year

"Waghorn" wrote in message


A 30-35 day oscillation has been reported in the literature in association
with N Atlantic sector blocking and retrogression of the jet,this may be a
harmonic of a 70 day signal.


There is an history of inexplicable cycles in weatherlore too. It is
difficult to relate it to anything as regular as these things though.

This sort of thing. Somewhat unscientifically set out, as a mere
collection belying a total lack of research:

In Janiveer if the sun appear, March and April pay full dear.

January warm, the Lord have mercy!

[Because a premature growth of vegetation is liable to suffer severe
damage from spring frosts -Editor]

(I had thought the editor's comments unlikely. I'd thought it more
likely to be a reference to the prevalence of T.B. and influenza.)

While frost might damage the cross fertilisation process of some fruit
trees it isn’t likely to do worse to any vegetation. I remember once a
hard frost took all the leaves off the conker trees where I used to
live. They soon grew back.)

A summerish January; a winterish spring.

If January calends be summery gay, it will be wintry weather until the
calends of May.

(Well that one was true enough.)

A January spring is worth nothing –Scotland.

A warm January, a cold May.

Not really illuminating but totally inexplicable (if true.)



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