Some interesting comparisons today,

we have a 20°C being reported at Bournemouth :-

EGHH 141220Z 32007KT 9999 FEW036 26/20 Q1031=

while only 13°C at Southampton :-
EGHI 141220Z 32008KT 260V010 9999 FEW033 24/13 Q1030=

17°C at Luton :-
EGGW 141220Z 34010KT CAVOK 25/17 Q1029=

and 9°C at Stansted :-
EGSS 141220Z 30010KT 260V340 9999 FEW030 BKN250 25/09 Q1029=

I suspect some wet-bulb wicks need attention in one or two places.

Jon.

"Jon O'Rourke" wrote in message
...
Some interesting comparisons today,

we have a 20°C being reported at Bournemouth :-

EGHH 141220Z 32007KT 9999 FEW036 26/20 Q1031=

while only 13°C at Southampton :-
EGHI 141220Z 32008KT 260V010 9999 FEW033 24/13 Q1030=

17°C at Luton :-
EGGW 141220Z 34010KT CAVOK 25/17 Q1029=

and 9°C at Stansted :-
EGSS 141220Z 30010KT 260V340 9999 FEW030 BKN250 25/09 Q1029=

I suspect some wet-bulb wicks need attention in one or two places.

Jon.




Certainly, I have been watching the Luton DPs for years and get the feeling
they are someway off the mark. I'm on 27/11 for what its worth.

Bedford
25-30mASL

"Jon O'Rourke" wrote in message
...
Some interesting comparisons today,
we have a 20°C being reported at Bournemouth :-
EGHH 141220Z 32007KT 9999 FEW036 26/20 Q1031=
while only 13°C at Southampton :-
EGHI 141220Z 32008KT 260V010 9999 FEW033 24/13 Q1030=
17°C at Luton :-
EGGW 141220Z 34010KT CAVOK 25/17 Q1029=
and 9°C at Stansted :-
EGSS 141220Z 30010KT 260V340 9999 FEW030 BKN250 25/09 Q1029=

I suspect some wet-bulb wicks need attention in one or two places.

Dry bulb 26.1 and RH (from hygrograph) 40% ... just 4km from
Luton airport. Sorry, I ain't got me Hygro Tables handy, but I
guess
that gives a dew-point considerably lower than 17!

Philip Eden

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

Dry bulb 26.1 and RH (from hygrograph) 40% ... just 4km from
Luton airport. Sorry, I ain't got me Hygro Tables handy, but I
guess
that gives a dew-point considerably lower than 17!

Philip Eden


http://www.srh.noaa.gov/elp/wxcalc/rh.shtml

11°C ish, I think, as per Joe in Bedford and as the same as what Stansted is
now reporting,
EGSS 141320Z 31010KT 270V350 CAVOK 25/11 Q1028=

(Luton now up to 18°C.. EGGW 141320Z 32012KT CAVOK 26/18 Q1029=)

Jon.

"Jon O'Rourke" wrote in message
...
"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
...

Dry bulb 26.1 and RH (from hygrograph) 40% ... just 4km from
Luton airport. Sorry, I ain't got me Hygro Tables handy, but I
guess
that gives a dew-point considerably lower than 17!

Philip Eden


http://www.srh.noaa.gov/elp/wxcalc/rh.shtml

11°C ish, I think, as per Joe in Bedford and as the same as what Stansted
is
now reporting,
EGSS 141320Z 31010KT 270V350 CAVOK 25/11 Q1028=

(Luton now up to 18°C.. EGGW 141320Z 32012KT CAVOK 26/18 Q1029=)

Jon.


I was showing a dew point of 14°C in St Albans (abot 10 miles from Luton
airport)at midday; the value has flctuated between this value and a maximum
of 17°C at 0800 hrs. Outside termperature currently (15:30) is 28.1°C.

Alan

Now Temp 26.3c in Guildford, Dew Point 14.

I'm surprised that the PAMOS does not calculate the Dew point from the AWS -
as the Davis - and cross check with the actual wet bulb.

Phil

"Jon O'Rourke" wrote in message
...
Some interesting comparisons today,

we have a 20°C being reported at Bournemouth :-

EGHH 141220Z 32007KT 9999 FEW036 26/20 Q1031=

while only 13°C at Southampton :-
EGHI 141220Z 32008KT 260V010 9999 FEW033 24/13 Q1030=

Bournemouth has been reporting absurdly high dewpoints for a few weeks now.
I have learnt to ignore that aspect of the report. (Actually, Luton had a
similar problem last year)

Someone at Bournemouth needs to dip his wick more frequently.

Jack

Someone at Bournemouth needs to dip his wick more frequently.

Don't we all. I have noticed an intermittent problem at Luton for years.
During the hot spell in Aug 1990 the dewpoint as reported on VOLMET crept
higher and higher, ending at over 20, whereas everywhere else had 11-13. There
have been many other instances and I am always highly suspicious. Perhaps
there's a new branch of physics called Lutonian Mechanics.

Tudor Hughes, Warlingham, Surrey.