https://tinyurl.com/yx8kk9cx

Colin Youngs
Brussels

On Saturday, October 12, 2019 at 9:53:10 PM UTC+1, Colin Youngs wrote:
https://tinyurl.com/yx8kk9cx

Colin Youngs
Brussels

I wonder how these totals were measured.
Large efficient tipping bucket and/or radar?

Len

A very large non-tipping bucket might give the accuracy needed.

What is even more staggering is that half a metre of rain in a day is nowhere near record breaking

On Monday, October 14, 2019 at 8:56:22 AM UTC+1, wrote:
What is even more staggering is that half a metre of rain in a day is nowhere near record breaking

What puzzles me is, how reliable is the catchment of these large raingauges when
you have horizontal rain in these extreme wind conditions?

Len

wrote:

On Monday, October 14, 2019 at 8:56:22 AM UTC+1,
wrote:
What is even more staggering is that half a metre of rain in a day
is nowhere near record breaking

What puzzles me is, how reliable is the catchment of these large
raingauges when you have horizontal rain in these extreme wind
conditions?

Len

Probably not very reliable but, even if there is a plus/minus 10-20%
error it's still a heck of a lot of rain.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
twitter: @TideswellWeathr

On Monday, October 14, 2019 at 5:08:07 PM UTC+1, Norman Lynagh wrote:
wrote:

On Monday, October 14, 2019 at 8:56:22 AM UTC+1,
wrote:
What is even more staggering is that half a metre of rain in a day
is nowhere near record breaking

What puzzles me is, how reliable is the catchment of these large
raingauges when you have horizontal rain in these extreme wind
conditions?

Len

Probably not very reliable but, even if there is a plus/minus 10-20%
error it's still a heck of a lot of rain.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
twitter: @TideswellWeathr

The rainfall for the Coverack storm was originally based on 2 non tipping buckets in peoples garden, basic but nothing to go wrong. The subsequent radar estimate was close.

A good archive of accounts here
https://www.webarchive.org.uk/waybac...d_Archive.html

Graham
Penzance

In message ,
writes
What is even more staggering is that half a metre of rain in a day is
nowhere near record breaking

Half a metre would be about 20 inches, so only about twice the record
rainfall for a day in the UK. (I'm afraid I'm still more comfortable
with inches than with mm, especially for such large amounts.)
--
John Hall
"If you haven't got anything nice to say about anybody, come
sit next to me."
Alice Roosevelt Longworth (1884-1980)

On Saturday, October 12, 2019 at 9:53:10 PM UTC+1, Colin Youngs wrote:
https://tinyurl.com/yx8kk9cx

Colin Youngs
Brussels

Some UK records
Highest 60-min total 92 mm (3.6 in) Maidenhead, Berkshire 12 July 1901

Highest 120-min total 193 mm (7.6 in)Walshaw, W Yorks 19 May 1989

Highest 24-hour total (1800-1800) 341.4 mm (13.44 in)
Honister Pass, Cumbria 5 December 2015

Highest 24-hour total (0900-0900) 279 mm (11.0 in)
Martinstown, Dorset 18 July 1955

What you can be sure of is that on all these occasions it is highly unlikely that the gauge was in the wettest spot.

Graham
Penzance

Graham Easterling wrote:

On Saturday, October 12, 2019 at 9:53:10 PM UTC+1, Colin Youngs wrote:
https://tinyurl.com/yx8kk9cx

Colin Youngs
Brussels

Some UK records
Highest 60-min total 92 mm (3.6 in) Maidenhead, Berkshire 12 July
1901

Highest 120-min total 193 mm (7.6 in)Walshaw, W Yorks 19 May 1989

Highest 24-hour total (1800-1800) 341.4 mm (13.44 in)
Honister Pass, Cumbria 5 December 2015

Highest 24-hour total (0900-0900) 279 mm (11.0 in)
Martinstown, Dorset 18 July 1955

What you can be sure of is that on all these occasions it is highly
unlikely that the gauge was in the wettest spot.

Graham
Penzance

Interesting that there is such a difference between the highest
1800-1800 24-hr total and the highest 0900-0900 24-hr total. Almost
invariably when somewhere is reported as having had a record wet day it
is the 0900-0900 24-hour totals that are being considered, although
this is seldom explicitly stated. The figures above show how misleading
it can be if only the 0900-0900 totals are considered.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
twitter: @TideswellWeathr