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Old October 1st 10, 11:59 AM posted to uk.sci.weather
Len Wood Len Wood is offline
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First recorded activity by Weather-Banter: Oct 2009
Posts: 1,730
Default September 2010 - Penzance

On Oct 1, 11:53*am, Graham Easterling wrote:
PENZANCE - Alt 19m Aspect SSE

TEMPERATURE
Av Max: 18.0 (-0.2)
Av Min: *11.6 (0.0)

Absolute Max: 20.5 - 20th (though 6 days reached 20C)
Absolute Min: * 6.2 - 18th

Warmest Night: 16.2 - 11th
Lowest Max : * * 14.3 - 26th
(The lowest September max since 2000)

RAINFALL
Total Rainfall: 106.4 (111%)
Wettest Day: * 23.1 (22nd)
Rain Days: 16
Wet Days: *12
Days with thunder: 1
(In intense shower 0400 on 7th - 1st thunder of 2010!)
No hail

WIND
Strongest gust 27mph on 14th & 24th
A new record low for September. 2010 is, so far, continuing the 21stC
pattern of low average wind speeds & lack of gales. So much lower than
was typical in the early & mid 20th century (H H Lamb's English
climate shows just how much things have changed). Possibly down to the
lack of arctic sea ice & low temperature gradients in the Atlantic. It
is interesting how over history warmer periods in the UK have also
been less windy. The number of severe, damaging gales seems to be
relatively unchanged.

In the period of my records:-
Year * Gales
1992 * 6
1993 * 13
1994 * 14
1995 * 13
1996 * 16
1997 * 14
1998 * 19
1999 * 15
2000 * 17
2001 * 5
2002 * 15
2003 * 9
2004 * 12
2005 * 7
2006 * 4
2007 * 11
2008 * 1
2009 * 4
2010 * 1 (so far)
Of course, this is in sheltered Penzance. The frequency would be much
greater Land's End.

Graham
Penzance


Very interesting data Graham.
I wonder what went on in 2007 to give the higher number.

Len
Wembury