Further to my previous post, I find that the value given in the Guiness Book
of Records (1054.7 mbar), does not tally with the Daily Weather Report for
31st January 1902, wherein it is strated that the highest MSL pressure at
Aberdeen was 31.11 inches (1053.5 mbar). It is possible that the value may
have been subject to subsequent correction, or Ingrid Holford's value may be
in error.

--
Bernard Burton
Weather data and satellite images at:
www.woksat.info/wwp.html

Stephen Burt (in 2007) gives a figure of 153.6mb at Aberdeen for that date, so it agrees.

He also gives the highest pressure in England as 153.1mb in Falmouth 28/1/1906.

Graham
Penzance

On Sunday, 19 January 2020 10:56:52 UTC, Bernard Burton wrote:
"Bernard Burton" wrote in message
...
"Graham Easterling" wrote in message
...
Already up to 1044mb in Penzance & set to rise to near 1050mb, breaking
my record 090:00 record (1044mb - records start 1992) by a fair margin.

Anyone know the highest barometric pressure recorded at Camborne?
(Where's PE when you need him). The highest ever recorded in the UK is
1053.6mb

Graham
Penzance

Hello Graham,

Afraid I can't put my finger on the highest in the SW at the moment, but
according to Ingrid Holford's Guiness Book of Records (1977), the highest
MSL pressure in the UK is 1054.7 mbar at Aberdeen on 31st January 1902.
My highest here in Wokingham since 1976 is 1046.8 in Jan 1992.


--
Bernard Burton
Weather data and satellite images at:
www.woksat.info/wwp.html

Further to my previous post, I find that the value given in the Guiness Book
of Records (1054.7 mbar), does not tally with the Daily Weather Report for
31st January 1902, wherein it is strated that the highest MSL pressure at
Aberdeen was 31.11 inches (1053.5 mbar). It is possible that the value may
have been subject to subsequent correction, or Ingrid Holford's value may be
in error.

It was a conversion error. There was a letter about this in Weather magazine in 2006. See https://rmets.onlinelibrary.wiley.co...1256/wea.40.06

--
Freddie
Dorrington
Shropshire
115m AMSL
http://www.hosiene.co.uk/weather/
Stats for the month so far: https://www.hosiene.co.uk/weather/st...cs/latest.xlsx

On Sunday, 19 January 2020 09:22:29 UTC, Graham Easterling wrote:
Already up to 1044mb in Penzance & set to rise to near 1050mb, breaking my record 090:00 record (1044mb - records start 1992) by a fair margin.

Anyone know the highest barometric pressure recorded at Camborne? (Where's PE when you need him). The highest ever recorded in the UK is 1053.6mb

Graham
Penzance

I started keeping records in 1977 and have local records here at Southend-on-Sea back to 1970. currently 1046.3mb and still rising which beats my previous record of 1046.0mb back on the 28th December 1992.

Keith (Southend)

"Freddie" wrote in message
...
On Sunday, 19 January 2020 10:56:52 UTC, Bernard Burton wrote:
"Bernard Burton" wrote in message
...
"Graham Easterling" wrote in message
...
Already up to 1044mb in Penzance & set to rise to near 1050mb,
breaking
my record 090:00 record (1044mb - records start 1992) by a fair
margin.

Anyone know the highest barometric pressure recorded at Camborne?
(Where's PE when you need him). The highest ever recorded in the UK is
1053.6mb

Graham
Penzance

Hello Graham,

Afraid I can't put my finger on the highest in the SW at the moment,
but
according to Ingrid Holford's Guiness Book of Records (1977), the
highest
MSL pressure in the UK is 1054.7 mbar at Aberdeen on 31st January 1902.
My highest here in Wokingham since 1976 is 1046.8 in Jan 1992.


--
Bernard Burton
Weather data and satellite images at:
www.woksat.info/wwp.html

Further to my previous post, I find that the value given in the Guiness
Book
of Records (1054.7 mbar), does not tally with the Daily Weather Report
for
31st January 1902, wherein it is strated that the highest MSL pressure at
Aberdeen was 31.11 inches (1053.5 mbar). It is possible that the value
may
have been subject to subsequent correction, or Ingrid Holford's value may
be
in error.

It was a conversion error. There was a letter about this in Weather
magazine in 2006. See
https://rmets.onlinelibrary.wiley.co...1256/wea.40.06

--
Freddie
Dorrington
Shropshire
115m AMSL
http://www.hosiene.co.uk/weather/
Stats for the month so far:
https://www.hosiene.co.uk/weather/st...cs/latest.xlsx

Yes Freddie, that is a useful reference, and explains the discrepency.
Thanks for the link..I had completely forgotten Stephen's letter in Weather,
but remember reading it at the time, now that you have drawn it to my
attention. Stephen certainly went into the matter thoroughly.

--
Bernard Burton
Weather data and satellite images at:
www.woksat.info/wwp.html

On Sunday, January 19, 2020 at 10:36:08 AM UTC, Nick Gardner wrote:
On 19/01/2020 09:22, Graham Easterling wrote:
Already up to 1044mb in Penzance & set to rise to near 1050mb, breaking my record 090:00 record (1044mb - records start 1992) by a fair margin.

Pressure at 10:35 on the 19th = 1046.3 hPa and rising fast. This has
already beaten my previous highest pressure of 1044.1 hPa.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

1047.8mb here now.

Looks spot on based on this http://meteocentre.com/analysis/map-...r&size=lar ge which shows an area from SE Wales to north Cornwall 1048mb.

MetO showing 1050mb for Cornwall noon tomorrow. This'll take some beating.

Graham
Penzance

On 19/01/2020 17:19, Graham Easterling wrote:
1047.8mb here now.

Now (17:25), 1047.6 hPa and rising at 0.3 hPa an hour.

A stunning day and lovely to see the sky completely devoid of contrails.
Just pristine, deep blue.

After a sharp frost last night (-2.6C) the temperature climbed up to 10.1C.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

On Sunday, January 19, 2020 at 5:27:59 PM UTC, Nick Gardner wrote:
On 19/01/2020 17:19, Graham Easterling wrote:
1047.8mb here now.

Now (17:25), 1047.6 hPa and rising at 0.3 hPa an hour.

A stunning day and lovely to see the sky completely devoid of contrails.
Just pristine, deep blue.

After a sharp frost last night (-2.6C) the temperature climbed up to 10.1C.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

Correction to sea level pressure can introduce errors.
No good looking it up in a table when we are talking about record pressures.
Need the mean temp over the height difference to put into the thickness equation. Bit of an inversion at the surface atm so can't assume isothermal conditions.
I bet the values given at the AWSs are all assuming a bog standard conversion to sea level pressure of about +1mb per 8 metres.

Len
Wembury


Len
Wembury

On Sunday, January 19, 2020 at 9:07:55 PM UTC, wrote:
On Sunday, January 19, 2020 at 5:27:59 PM UTC, Nick Gardner wrote:
On 19/01/2020 17:19, Graham Easterling wrote:
1047.8mb here now.

Now (17:25), 1047.6 hPa and rising at 0.3 hPa an hour.

A stunning day and lovely to see the sky completely devoid of contrails..
Just pristine, deep blue.

After a sharp frost last night (-2.6C) the temperature climbed up to 10..1C.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

Correction to sea level pressure can introduce errors.
No good looking it up in a table when we are talking about record pressures.
Need the mean temp over the height difference to put into the thickness equation. Bit of an inversion at the surface atm so can't assume isothermal conditions.
I bet the values given at the AWSs are all assuming a bog standard conversion to sea level pressure of about +1mb per 8 metres.

Len
Wembury


Len
Wembury

Both Nick & I are close to sea level. Currently I'm 1049.1mb, which agrees with all the official stations around. (Camborne 1049 for instance) Also looking at reports from sites like say XCWeather, places near sea level, and at height, show a very high degree of agreement.

The highest pressure seems to be in north Devon / SE Wales with several stations, at various altitude, reporting 1050mb.

It's a very significant event by any standards.

Graham
Penzance

On Sunday, 19 January 2020 15:19:26 UTC, Keith Harris wrote:
On Sunday, 19 January 2020 09:22:29 UTC, Graham Easterling wrote:
Already up to 1044mb in Penzance & set to rise to near 1050mb, breaking my record 090:00 record (1044mb - records start 1992) by a fair margin.

Anyone know the highest barometric pressure recorded at Camborne? (Where's PE when you need him). The highest ever recorded in the UK is 1053.6mb

Graham
Penzance

I started keeping records in 1977 and have local records here at Southend-on-Sea back to 1970. currently 1046.3mb and still rising which beats my previous record of 1046.0mb back on the 28th December 1992.

Keith (Southend)

Although I wasn't keeping records in the sense of writing them down I can distinctly remember a pressure of 1047 mb (here) on 5th Feb 1964. The memory is quite vivid because I had just joined the Met Office at Bracknell (19 Jan 64) and had come home for the weekend.
Until today that was the highest pressure my home barometer had shown.

Tudor Hughes, Warlingham, NE Surrey, 557 ft, 169 m (21 mb correction to MSL)

On 19/01/2020 10:36, Nick Gardner wrote:
On 19/01/2020 09:22, Graham Easterling wrote:
Already up to 1044mb in Penzance & set to rise to near 1050mb,
breaking my record 090:00 record (1044mb - records start 1992) by a
fair margin.

Pressure at 10:35 on the 19th = 1046.3 hPa and rising fast. This has
already beaten my previous highest pressure of 1044.1 hPa.


1049.3 here!

--

Paul Hyett, Cheltenham