Ronaldsway http://weather.noaa.gov/weather/current/EGNS.html

Valley http://weather.noaa.gov/weather/current/EGOV.html

Liverpool http://weather.noaa.gov/weather/current/EGGP.html

Shawbury http://weather.noaa.gov/weather/current/EGOS.html

St Mawgan http://weather.noaa.gov/weather/current/EGDG.html

Culdrose http://weather.noaa.gov/weather/current/EGDR.html

Pembrey Sands http://weather.noaa.gov/weather/current/EGOP.html

Colin Youngs
Brussels

On 8 Jan, 20:08, "Colin Youngs" wrote:
Ronaldsway *http://weather.noaa.gov/weather/current/EGNS.html

Valley *http://weather.noaa.gov/weather/current/EGOV.html

Liverpool *http://weather.noaa.gov/weather/current/EGGP.html

Shawbury *http://weather.noaa.gov/weather/current/EGOS.html

St Mawgan *http://weather.noaa.gov/weather/current/EGDG.html

Culdrose *http://weather.noaa.gov/weather/current/EGDR.html

Pembrey Sands *http://weather.noaa.gov/weather/current/EGOP.html

Colin Youngs
Brussels


Temperature drop of around 4.5C in 45 minutes here in Penzance. Also
rapid decrease in wind strength in Cornwall. E.g. Sevenstones mean
wind speeds 39knots at 17:00. 21 knots ar 19:00.

Graham
Penzance

On 8 Jan, 20:08, "Colin Youngs" wrote:
Ronaldsway *http://weather.noaa.gov/weather/current/EGNS.html

Valley *http://weather.noaa.gov/weather/current/EGOV.html

Liverpool *http://weather.noaa.gov/weather/current/EGGP.html

Shawbury *http://weather.noaa.gov/weather/current/EGOS.html

St Mawgan *http://weather.noaa.gov/weather/current/EGDG.html

Culdrose *http://weather.noaa.gov/weather/current/EGDR.html

Pembrey Sands *http://weather.noaa.gov/weather/current/EGOP.html

Colin Youngs
Brussels

Copley 7.8C at 2020Z 1.2C at 2050Z
Main fall was 7.8C 2020Z to 3.0C at 2030Z
Max gust 53mph at 2020Z max 10min(so far) 30KT
Wind now 230 after 160

Best CF for some time

Ken
Copley, Teesdale.

"Ken Cook" schreef in bericht
...

Copley 7.8C at 2020Z 1.2C at 2050Z
Main fall was 7.8C 2020Z to 3.0C at 2030Z
Max gust 53mph at 2020Z max 10min(so far) 30KT
Wind now 230 after 160

Leeds/Bradford Airport also a spectacular fall in temperature with some snow
http://weather.noaa.gov/weather/current/EGNM.html

Colin Youngs
Brussels

On Tue, 8 Jan 2008 at 12:52:46, Graham Easterling
wrote in uk.sci.weather :

On 8 Jan, 20:08, "Colin Youngs" wrote:
Ronaldsway *http://weather.noaa.gov/weather/current/EGNS.html

Valley *http://weather.noaa.gov/weather/current/EGOV.html

Liverpool *http://weather.noaa.gov/weather/current/EGGP.html

Shawbury *http://weather.noaa.gov/weather/current/EGOS.html

St Mawgan *http://weather.noaa.gov/weather/current/EGDG.html

Culdrose *http://weather.noaa.gov/weather/current/EGDR.html

Pembrey Sands *http://weather.noaa.gov/weather/current/EGOP.html

Colin Youngs
Brussels


Temperature drop of around 4.5C in 45 minutes here in Penzance.

Similarly fast drop here, just before 9pm - preceded by a pretty vicious
squall.
--
Paul Hyett, Cheltenham (change 'invalid83261' to 'blueyonder' to email me)

Hi.

At 2000 the temp here fell 6C from 10 to 4 in about as many minutes. It
was accompanied by heavy rain and some very strong gusts, but when I
later checked the max gust speed I was very surprised to see 75 mph (65
kts) recorded by my Davis VP! I know this is a very exposed location
but even so...

I am fairly certain it is untrue because the last highest gust of 62 mph
back in Oct 2002 blew out 7 panes of glass from my greenhouse and this
one didn't take any!

Any explanations anyone?
--
Chris

On Wed, 9 Jan 2008 17:01:54 +0000, Zak wrote:

I am fairly certain it is untrue because the last highest gust of 62 mph
back in Oct 2002 blew out 7 panes of glass from my greenhouse and this
one didn't take any!

Any explanations anyone?

Replaced with new glass that hasn't got the micro scratches on the surface
from which cracks can grow?

Seriously though was your 75mph gust one out on its own or the down with
all the other gusts? Take a look at my windspeed graph for yesterday:

http://www.howhill.com/weather/prev-day.php

(there until midnight ish)

I tend to ignore the ones that out on their own like 0145, 0240, 1930,
2245 etc.

--
Cheers
Dave. pam is missing e-mail

On 9 Jan, 17:01, Zak wrote:
Hi.

At 2000 the temp here fell 6C from 10 to 4 in about as many minutes. It
was accompanied by heavy rain and some very strong gusts, but when I
later checked the max gust speed I was very surprised to see 75 mph (65
kts) recorded by my Davis VP! I know this is a very exposed location
but even so...

I am fairly certain it is untrue because the last highest gust of 62 mph
back in Oct 2002 blew out 7 panes of glass from my greenhouse and this
one didn't take any!

Any explanations anyone?
--
Chris

Zak,
can tell us where you are, what yr anenometer exposure is, any damage
in the area etc?
David

On 9 Jan, 17:01, Zak wrote:
Hi.

At 2000 the temp here fell 6C from 10 to 4 in about as many minutes. *It
was accompanied by heavy rain and some very strong gusts, but when I
later checked the max gust speed I was very surprised to see 75 mph (65
kts) recorded by my Davis VP! *I know this is a very exposed location
but even so...

Any explanations anyone?

Is your VP wireless or cabled? I've seen numerous previous reports of
wireless VPs logging very high gusts in heavy rain and, possibly, a
bit of hail; I suspect it's a signal propagation fault. (One occasion
I saw a report, by a very excited observer, of a gust of something
like 160 mph - ermm, let me explain what 160 mph would actually do to
hour house, never mind your anemometer ...)

If you're in doubt, there's little or no significant damage (even if
very local) and it doesn't fit the local gust field, I'd doubt the
reading.

HTH.

Stephen Burt
Stratfield Mortimer, Berkshire

In message
,
writes
Is your VP wireless or cabled? I've seen numerous previous reports of
wireless VPs logging very high gusts in heavy rain and, possibly, a
bit of hail; I suspect it's a signal propagation fault. (One occasion
I saw a report, by a very excited observer, of a gust of something
like 160 mph - ermm, let me explain what 160 mph would actually do to
hour house, never mind your anemometer ...)

If you're in doubt, there's little or no significant damage (even if
very local) and it doesn't fit the local gust field, I'd doubt the
reading.

To answer all questions:

The wired VP is located about 4 km W of Monmouth at 77m. The exposure
to the SE-NW is open (falling away to 30m across 4 miles of valley).
The anemometer is atop a 5m pole and, apart from one gutter end being
blown away, no other damage occurred.

So, I do very much doubt the veracity of the reading. My only other
query is what may have caused such an anomalous reading.

All the best,
--
Chris