Summary for January 2007

Mean Max 11.0C
Mean Min 4.2C
Mean 7.6C

High Max 16.2C (19th) (Highest January temperature I have ever recorded)
Low Max 6.4C (23rd)
High Min 11.7C (9th)
Low Min -4.2C (26th)
Grass Min -5.5C (26th)

Rain Total 75.6 mm (standard gauge)
Max 24 hrs 14.0 mm (16th)

Air Frost 5 Days
Snow Falling 0 Days
Snow (50%) @ 9am 0 Days
Thunder Heard 3 Days

Total monthly sunshine 63.6 Hours
Most sunshine in a day 6.6 Hours (25th)
Sunless days 3 Days

Mean Soil Temperature 30 cm 7.7C
Mean Soil Temperature 100 cm 8.5C

Mean Wind 14.7 mph
Max Gust 48.2 mph (18th)

Frost Duration 28.50 Hours

Mean Pressure 1017.5 mb
Max Pressure 1036.4 mb (27th)
Min Pressure 992 mb (18th)
________________
Nick G
Otter Valley, Devon
83 m amsl
http://www.ottervalley.co.uk

On 1 Feb, 19:37, "Nick G"
wrote:
Summary for January 2007
Rain Total 75.6 mm (standard gauge)
Max 24 hrs 14.0 mm (16th)

Boy, what a difference to the South Hams.

A whopping 181.1mm in Dartington, more than double you recorded in
Ottery Nick. Interestingly Graham only(!) recorded 119mm in Penzance.

Our max 24hrs total was 26.4mm on 18th.

The last 2 weeks have been bliss in comparison.

Best wishes,
Richard.

Richard

Philip Eden stated in his synoptic:

"The strength of the westerlies also resulted in a strongly
orographically-modulated rainfall distribution (biggest percentages on
west-facing upslopes and lowest percentages in the usual rain-shadow
areas)."

Maybe this accounted for the differences?
________________
Nick G
Otter Valley, Devon
80 m amsl
http://www.ottervalley.co.uk

Er they called it *climatology* when I was at school.
Dartmoor is wet in winter, the South Hams is often wet and east Devon isn't.

Will.
--

"Nick G" wrote in message
...
Richard

Philip Eden stated in his synoptic:

"The strength of the westerlies also resulted in a strongly
orographically-modulated rainfall distribution (biggest percentages on
west-facing upslopes and lowest percentages in the usual rain-shadow
areas)."

Maybe this accounted for the differences?
________________
Nick G
Otter Valley, Devon
80 m amsl
http://www.ottervalley.co.uk

On 1 Feb, 22:49, "Nick G"
wrote:
Richard

Philip Eden stated in his synoptic:

"The strength of the westerlies also resulted in a strongly
orographically-modulated rainfall distribution (biggest percentages on
west-facing upslopes and lowest percentages in the usual rain-shadow
areas)."

Maybe this accounted for the differences?
________________

Without a doubt.

However, a few years back I did some research into rainfall patterns
in Cornwall. The EA were kind enough to give me data from many places
across the County. In the case of Cornwall the effect of altitude is
appears less significant than the distance from the spine of the
Penisula.

The places on headlands being relatively very dry (Lizard averaged
806mm in the 1990s - actually less than Scilly) whilst Penzance, in a
Bay, averaged 1185mm. Trengwainton Gardens, 1 mile from me 1267mm.
Culdrose averaged 1029, significantly drier than Mount's Bay despite
it's altitude. It all comes down to the convergence line along the
spine. Central parts of the Tamar valley are very wet for this reason.

Graham
Penzance



The wettest spots are of cause on this line, at altitude