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Old April 25th 09, 01:13 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

"Will Hand" wrote in message
...
Graham Easterling wrote:
64.5mm overnight, but much more just to the north over the moors (take
a look at the stationery white echo at
www.metoffice.gov.uk/weather/uk/radar/index.html I suspect overnight
totals 100mm above St Ives. A real test for the
new flood defence work The stream in my garden is at it's highest
level since we moved in Aug '07. Still raining

Got to go out - more details later.

Graham
Penzance


Graham was a warning issued?

Will
--


I looked at the MetO site around midnight and there was a flash warning in
force for Cornwall.

Jon.


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Old April 25th 09, 01:20 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

On 25 Apr, 13:13, "Jon O'Rourke" wrote:
"Will Hand" wrote in message

...





Graham Easterling wrote:
64.5mm overnight, but much more just to the north over the moors (take
a look at the stationery white echo at
http://www.metoffice.gov.uk/weather/...ar/index.htmlI suspect overnight
totals 100mm above St Ives. A real test for the
new flood defence work The stream in my garden is at it's highest
level since we moved in Aug '07. Still raining


Got to go out - more details later.


Graham
Penzance


Graham was a warning issued?


Will
--


I looked at the MetO site around midnight and there was a flash warning in
force for Cornwall.


In that case I take back what I said. (It must have been issued after
my bedtime!)

Graham
Penzance
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Old April 25th 09, 01:34 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

On 25 Apr, 08:32, Graham Easterling
wrote:
64.5mm overnight, but much more just to the north over the moors (take
a look at the stationery white echo atwww.metoffice.gov.uk/weather/uk/radar/index.html
I suspect overnight totals 100mm above St Ives. A real test for the
new flood defence work The stream in my garden is at it's highest
level since we moved in Aug '07. Still raining

Got to go out - more details later.

Graham
Penzance


There are a number of news stories appearing now. A regular statement
is that parts of west Cornwall received 50% of the normal April
rainfall in 12 hours. In fact locally it was 100% in nearer 6 hours.

There has been extensive flooding. 2 hotels in St Ives had to be
evacuated. It now appears that the new flood defense scheme didn't
help much http://www.stivescornwallblog.co.uk/...n-st-ives.html

Graham
Penzance

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Old April 25th 09, 02:59 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

Regarding radar totals: from the 1km radar suggests (24 hour totals midday
Fri - midday Sat, GMT) up to 239mm just offshore of the NW of The Carracks
(west of St Ives) with probably 180mm along the coast - I'll delve into the
details later....

Chris


"Graham Easterling" wrote in message
...
On 25 Apr, 08:32, Graham Easterling
wrote:
64.5mm overnight, but much more just to the north over the moors (take
a look at the stationery white echo
atwww.metoffice.gov.uk/weather/uk/radar/index.html
I suspect overnight totals 100mm above St Ives. A real test for the
new flood defence work The stream in my garden is at it's highest
level since we moved in Aug '07. Still raining

Got to go out - more details later.

Graham
Penzance


There are a number of news stories appearing now. A regular statement
is that parts of west Cornwall received 50% of the normal April
rainfall in 12 hours. In fact locally it was 100% in nearer 6 hours.

There has been extensive flooding. 2 hotels in St Ives had to be
evacuated. It now appears that the new flood defense scheme didn't
help much
http://www.stivescornwallblog.co.uk/...n-st-ives.html

Graham
Penzance



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Old April 25th 09, 03:42 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

On 25 Apr, 14:59, "CHRIS KIDD" wrote:
Regarding radar totals: from the 1km radar suggests (24 hour totals midday
Fri - midday Sat, GMT) up to 239mm just offshore of the NW of The Carracks
(west of St Ives) with probably 180mm along the coast - I'll delve into the
details later....

Chris


Thanks Chris,

It's still raining! though thankfully in rather more normal amounts.

Graham
Penzance


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Old April 25th 09, 04:34 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

Will Hand wrote:

Graham P Davis wrote:
Will Hand wrote:

Graham was a warning issued?


Are they naming warnings now?


Eh? All I did was ask Graham E. if a warning was issued.


For the want of a comma, the sense was lost. ;-)

--
Graham P Davis, Bracknell, Berks., UK. E-mail: newsman not newsboy
I wear the cheese. It does not wear me.

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Old April 25th 09, 06:00 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

On Sat, 25 Apr 2009 at 00:32:14, Graham Easterling
wrote in uk.sci.weather :

64.5mm overnight, but much more just to the north over the moors (take
a look at the stationery white echo at
www.metoffice.gov.uk/weather/uk/radar/index.html
I suspect overnight totals 100mm above St Ives. A real test for the
new flood defence work The stream in my garden is at it's highest
level since we moved in Aug '07. Still raining

Got to go out - more details later.


I thought there must have been a lot - saw a news report of a car being
swept away near Zennor, & at least one person drowned.
--
Paul Hyett, Cheltenham (change 'invalid83261' to 'blueyonder' to email me)
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Old April 25th 09, 06:00 PM posted to uk.sci.weather
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Default Penzance - Huge Amounts of rain

On Sat, 25 Apr 2009 at 05:34:12, Graham Easterling
wrote in uk.sci.weather :

There are a number of news stories appearing now. A regular statement
is that parts of west Cornwall received 50% of the normal April
rainfall in 12 hours. In fact locally it was 100% in nearer 6 hours.

There has been extensive flooding. 2 hotels in St Ives had to be
evacuated. It now appears that the new flood defense scheme didn't
help much http://www.stivescornwallblog.co.uk/...n-st-ives.html

Tell me about it!

Just 4-5 years ago Cheltenham had millions spent on new flood defences,
yet look what happened in 2007.

ISTM that Mother Nature just looks on improved flood defences as a
challenge...
--
Paul Hyett, Cheltenham (change 'invalid83261' to 'blueyonder' to email me)
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Old April 25th 09, 06:59 PM posted to uk.sci.weather
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Default Penzance - radar totals

Looking at the radar rainfall totals (Friday 12Z to Saturday 12Z) in a bit
more detail:

The area west of St Ives had typically ~170mm with a maximum of 193mm ~4km
SW of the town. Zennor had 136mm. However, very sharp E-W gradient with much
lower totals to the East of St Ives - typically no more the 25mm. Similarly
with Penzence - the centre of which the radar suggests had ~25mm, but a few
km to the west in the 80-100mm range.

The highest totals were just offshore to the NW of the coastline with up to
200mm - however, maybe brightband played a part here - this region is ~37km
from the Predannack and assuming a maximum height of the freezing level to
be ~2km puts it at the 3 degree beam elevation...

Chris




"Graham Easterling" wrote in message
...
On 25 Apr, 14:59, "CHRIS KIDD" wrote:
Regarding radar totals: from the 1km radar suggests (24 hour totals
midday
Fri - midday Sat, GMT) up to 239mm just offshore of the NW of The
Carracks
(west of St Ives) with probably 180mm along the coast - I'll delve into
the
details later....

Chris


Thanks Chris,

It's still raining! though thankfully in rather more normal amounts.

Graham
Penzance



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Old April 25th 09, 07:04 PM posted to uk.sci.weather
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Default Penzance - Upper Air soundings from Camborne

The radiosondo ascent from Camborne is interesting - massive drop in
temperature between 88m and 96m height...

03808 Camborne Observations at 00Z 25 Apr 2009
-----------------------------------------------------------------------------
PRES HGHT TEMP DWPT RELH MIXR DRCT SKNT THTA THTE
THTV
hPa m C C % g/kg deg knot K K K
-----------------------------------------------------------------------------
1000.0 1
989.0 88 7.0 5.6 91 5.80 230 22 281.0 297.2
282.0
988.0 96 -6.9 -7.7 94 2.18 231 23 267.2 273.2
267.5
982.0 144 -7.1 -7.7 95 2.19 237 29 267.4 273.5
267.8
979.0 168 -7.6 -8.0 96 2.14 240 32 267.2 273.1
267.6
973.0 215 -8.5 -8.7 98 2.05 243 33 266.7 272.4
267.1
969.0 247 -9.0 -9.1 99 1.98 245 34 266.6 272.1
266.9
951.0 391 -11.0 -11.1 99 1.73 250 40 265.9 270.7
266.2
925.0 604 -14.1 -14.1 100 1.40 255 43 264.9 268.8
265.1
904.0 777 -16.6 -16.6 100 1.16 260 46 264.1 267.3
264.2
896.0 844 -17.6 -17.6 100 1.08 260 44 263.7 266.8
263.9
895.0 853 -17.7 -17.7 100 1.07 260 44 263.7 266.7
263.9
892.0 878 -17.7 -17.7 100 1.07 260 44 263.9 267.0
264.1
890.0 894 -16.3 -16.3 100 1.21 260 44 265.6 269.0
265.7
889.0 903 -16.4 -16.4 100 1.20 260 44 265.6 269.0
265.8
887.0 920 -16.5 -16.5 100 1.19 259 44 265.6 269.0
265.8


"Graham Easterling" wrote in message
...
64.5mm overnight, but much more just to the north over the moors (take
a look at the stationery white echo at
www.metoffice.gov.uk/weather/uk/radar/index.html
I suspect overnight totals 100mm above St Ives. A real test for the
new flood defence work The stream in my garden is at it's highest
level since we moved in Aug '07. Still raining

Got to go out - more details later.

Graham
Penzance





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