Local TV is claiming the Glasgow rainfall record for December has
already been broken - 10.3 inches. Is this correct?

Not bad considering we aren't halfway through the month yet.

"Paul C" wrote in message
news
Local TV is claiming the Glasgow rainfall record for December has
already been broken - 10.3 inches. Is this correct?

Not bad considering we aren't halfway through the month yet.

Well, the November rainfall record there was smashed out of
sight too. Let's have a look.

http://www.climate-uk.com/monthly/0512.htm tells us that the
previous record in the Renfrew/Abbotsinch/Bishopton series
which began in 1921 was 261mm in 1999 ...

a quick perusal of my current spreadsheet

.... but this month up to 18z has had 241mm, so, no, not yet,
but it's getting close. Maybe they are using a different
rainfall series.

Inveruglas (above the top end of Loch Lomond has had
over 1100mm of rain in the last 40 days ... I'm not sure if
I can have the statistics easily available but that sounds
extremely unusual for such a period.

StephenB may have some tables of max rainfall for
different periods ... Stephen?

Philip

On Thu, 14 Dec 2006 19:17:43 -0000, "Philip Eden"
philipATweatherHYPHENukDOTcom wrote:

Inveruglas (above the top end of Loch Lomond has had
over 1100mm of rain in the last 40 days ... I'm not sure if
I can have the statistics easily available but that sounds
extremely unusual for such a period.

My daughter's partner has obtained for me the last five weeks records
for the power station at Inveruglas which I will have next Wednesday.

Are you interested?

I did say that if he wants something to eat the last five years would be
better.

--
Alan White
Twenty-eight miles NW of Glasgow, overlooking Lochs Long and Goil in Argyll, Scotland.
Webcam and weather:- http://windycroft.gt-britain.co.uk/weather
Some walks and treks:- http://windycroft.gt-britain.co.uk/walks

Philip Eden wrote:
Inveruglas (above the top end of Loch Lomond has had
over 1100mm of rain in the last 40 days ... I'm not sure if
I can have the statistics easily available but that sounds
extremely unusual for such a period.

StephenB may have some tables of max rainfall for
different periods ... Stephen?

Philip

The highest calendar month total I know of was 1436 mm at Llyn Llydaw
in Snowdonia in October 1909 = 46 mm/day. True extremes of multi-day
falls are almost impossible to come by, because of course most of the
gauges in the really wet mountainous areas are monthly-read, but I am
aware of 724 mm in 20 days 6-25 March 1981 at Waen Sychlwch in Dyfed
(36 mm/day).

Taking these two data points imply that 40 mm/day is certainly
plausible in the wettest locations over a 40 day period = 1600 mm. Llyn
Lydaw Average Annual Rainfall AAR is around 3300 mm, Waen Sychlwch
around 2600 mm; there are spots with 4000 mm/year average. But the
AAR at Inveruglas is 'only' around 2500-2600 mm, where 30 mm/day over
40 days is probably more realistic = 1200 mm. So yes, 1100 mm over 40
days must be running this quite close.

Is there still a daily gauge or logger at Sloy Main Adit I wonder?
That's about 30 per cent higher AAR than Inveruglas and might well be
approaching 1500 mm in 40 days. The monthly gauges on the mountaintops
will be still higher of course. Anyone have any contacts who could
check?

Stephen

Philip Eden wrote:
Inveruglas (above the top end of Loch Lomond has had
over 1100mm of rain in the last 40 days ... I'm not sure if
I can have the statistics easily available but that sounds
extremely unusual for such a period.

StephenB may have some tables of max rainfall for
different periods ... Stephen?

The highest calendar month total I know of was 1436 mm at Llyn Llydaw
in Snowdonia in October 1909 = 46 mm/day. True extremes of multi-day
falls are almost impossible to come by, because of course most of the
gauges in the really wet mountainous areas are monthly-read, but I am
aware of 724 mm in 20 days 6-25 March 1981 at Waen Sychlwch in Dyfed
(36 mm/day).

Taking these two data points imply that 40 mm/day is certainly
plausible in the wettest locations over a 40 day period = 1600 mm. Llyn
Lydaw Average Annual Rainfall AAR is around 3300 mm, Waen Sychlwch
around 2600 mm; there are spots with 4000 mm/year average. But the
AAR at Inveruglas is 'only' around 2500-2600 mm, where 30 mm/day over
40 days is probably more realistic = 1200 mm. So yes, 1100 mm over 40
days must be running this quite close.

Is there still a daily gauge or logger at Sloy Main Adit I wonder?
That's about 30 per cent higher AAR than Inveruglas and might well be
approaching 1500 mm in 40 days. The monthly gauges on the mountaintops
will be still higher of course. Anyone have any contacts who could
check?

Stephen

"Alan White" wrote in message
...
On Thu, 14 Dec 2006 19:17:43 -0000, "Philip Eden"
philipATweatherHYPHENukDOTcom wrote:

Inveruglas (above the top end of Loch Lomond has had
over 1100mm of rain in the last 40 days ... I'm not sure if
I can have the statistics easily available but that sounds
extremely unusual for such a period.

My daughter's partner has obtained for me the last five weeks records
for the power station at Inveruglas which I will have next Wednesday.

It would be very interesting to see how they match up. Thanks, Alan.

I did say that if he wants something to eat the last five years would be
better.

Or, indeed, get them to post the figures on their website, if they
have one!

Philip

On Fri, 15 Dec 2006 10:08:31 -0000, "Philip Eden"
philipATweatherHYPHENukDOTcom wrote:

It would be very interesting to see how they match up. Thanks, Alan.

:-)

Or, indeed, get them to post the figures on their website, if they
have one!

David has offered us a 'works visit' so I'll pursue that then.

--
Alan White
Twenty-eight miles NW of Glasgow, overlooking Lochs Long and Goil in Argyll, Scotland.
Webcam and weather:- http://windycroft.gt-britain.co.uk/weather
Some walks and treks:- http://windycroft.gt-britain.co.uk/walks