On Feb 11, 9:40*am, George Booth wrote:
Minimum of -8.4 here on the ridge. The coldest night for 25 years since
-10 was recorded on 3 nights in February 1986
--
George in Epping, West Essexwww.eppingweather.co.ukwww.winter1947.co.uk
CWOP athttp://weather.gladstonefamily.net/site/C4752

-9.1C in Wanstead - not often I'm lower than you, George. I've been in
the new place four weeks today - I think it may be a bit of a frost
hollow here?

On 11/02/2012 9:52 AM, Scott W wrote:
On Feb 11, 9:40 am, George wrote:
Minimum of -8.4 here on the ridge. The coldest night for 25 years since
-10 was recorded on 3 nights in February 1986
--
George in Epping, West Essexwww.eppingweather.co.ukwww.winter1947.co.uk
CWOP athttp://weather.gladstonefamily.net/site/C4752

-9.1C in Wanstead - not often I'm lower than you, George. I've been in
the new place four weeks today - I think it may be a bit of a frost
hollow here?

The topography here results in the cold air draining away to the north
during the night. I suspect the resulting turbulence and mixing results
in the nocturnal temperature fall coming to a halt or going though
several cycles which reduces the overall drop in temperature.
I have been tempted to locate a temperature sensor some 200 yards north
of here where there is a steep sided valley facing north. Could be some
impressively low temperatures there.
The actual figure I recorded is secondary to the time elapsed since an
even lower figure was recorded here - 25 years is a long time.
Mind you the location here at 350' (positively Alpine for Essex) reduces
day time maxima and no doubt contributes to the 3 ice days recorded so
far this month.
Complete snow cover persists at 9cm following the heavy snowfall last
weekend and recent top up. Snow clearing skills improving although my
sack of rock salt, purchased in the early 1980's is almost empty

--
George in Epping
www.eppingweather.co.uk
www.winter1947.co.uk