BlankA hard frost overnight with a minimum of -3,8°C and the temperture is
struggling to reach 4°C. The sky has virtually no cloud apart from afew
contrails and a small patch of Cirrus so despite the low temepratures it is
very pleasant outside.

I am slightly surprised to see Philip Eden's comment about the pressure
being the highest since Dec 2001 since I saw a pressure of 1041.7 hPa on
the the 12th Dec 2005,;the pressure today reached 1041.1hPa. The pressure
today equaled that seen in Decemnber 2001. It could be that some calibration
drift has occurred with my weather station and I tend to regard the readings
as only being accurate to 1mb for that reason, in effect the pressures on
these three days are the same witin the accuracy limits of the weather
station.

The pressure at the NPL at Teddington is 1040.2 hPa at 14:25 which is
identical to my current value so I have no reason to doubt today's reading.


Alan Gardiner
Chiswell Green, St Albans
101m ASL

Yes Alan I agree. The air pressure today was not as high in Coulsdon by a
millibar of the 1041 mb reached here on Sat 10th Dec 2005. Incidentally I
recorded 1043 mb in December 1991.
Ian Currie- Coulsdon.
www.frostedearth.com



"Alan Gardiner" wrote in message
...
BlankA hard frost overnight with a minimum of -3,8°C and the temperture is
struggling to reach 4°C. The sky has virtually no cloud apart from afew
contrails and a small patch of Cirrus so despite the low temepratures it
is
very pleasant outside.

I am slightly surprised to see Philip Eden's comment about the pressure
being the highest since Dec 2001 since I saw a pressure of 1041.7 hPa on
the the 12th Dec 2005,;the pressure today reached 1041.1hPa. The pressure
today equaled that seen in Decemnber 2001. It could be that some
calibration
drift has occurred with my weather station and I tend to regard the
readings
as only being accurate to 1mb for that reason, in effect the pressures on
these three days are the same witin the accuracy limits of the weather
station.

The pressure at the NPL at Teddington is 1040.2 hPa at 14:25 which is
identical to my current value so I have no reason to doubt today's
reading.


Alan Gardiner
Chiswell Green, St Albans
101m ASL

"Alan Gardiner" wrote:

BlankA hard frost overnight with a minimum of -3,8°C and the temperture is
struggling to reach 4°C. The sky has virtually no cloud apart from afew
contrails and a small patch of Cirrus so despite the low temepratures it
is very pleasant outside.

I am slightly surprised to see Philip Eden's comment about the pressure
being the highest since Dec 2001 since I saw a pressure of 1041.7 hPa on
the the 12th Dec 2005,;the pressure today reached 1041.1hPa.

Alan ... I had 1041.3 this morning, and 1041.1 last Dec. Different sites,
of course, Luton and Whipsnade, but close enough to make no difference
in most instances, although my correction card may not be 100% reliable.
Instruments: Precision Aneroid Barometer for fixed hours; NZ barograph
for interpolating.

P

Philip Eden wrote:
"Alan Gardiner" wrote:

BlankA hard frost overnight with a minimum of -3,8°C and the
temperture is struggling to reach 4°C. The sky has virtually no
cloud apart from afew contrails and a small patch of Cirrus so
despite the low temepratures it is very pleasant outside.

I am slightly surprised to see Philip Eden's comment about the
pressure being the highest since Dec 2001 since I saw a pressure of
1041.7 hPa on the the 12th Dec 2005,;the pressure today reached
1041.1hPa.

Alan ... I had 1041.3 this morning, and 1041.1 last Dec. Different
sites, of course, Luton and Whipsnade, but close enough to make no
difference in most instances, although my correction card may not be
100% reliable. Instruments: Precision Aneroid Barometer for fixed
hours; NZ barograph for interpolating.

P

I am about 11 miles away so our readings should be in close agreement in
conditions like this and that seems to be confirmed by the 0.2 difference
between our readings today. In any case it looks if all of these values will
be exceeded in the next few days as 1042 seems to be on the cards for around
here.


Alan.

Alan