uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged.

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Old August 31st 09, 12:29 PM posted to uk.sci.weather
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Default The cold front

Looking at radar and satellite imagery for midday it seems most active in
the south. Where is the heavy rainfall that was expected over Cumbria by
now, for example? Interesting orographic patch over south Wales. Satellite
imagery indicates strong rearward-sloping ascent in SW approaches and weaker
ascent further north over Ireland.

Will
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Old August 31st 09, 01:00 PM posted to uk.sci.weather
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Default The cold front


"Will Hand" wrote in message
...
Looking at radar and satellite imagery for midday it seems most active in
the south. Where is the heavy rainfall that was expected over Cumbria by
now, for example? Interesting orographic patch over south Wales. Satellite
imagery indicates strong rearward-sloping ascent in SW approaches and
weaker ascent further north over Ireland.


There seems something very stange with the radar output in that area.
The one covering Southern Ireland seems to consistently show markedly
lower rainfal intensity than the one covering the SW approaches, so much
so that you can clearly see the curvature of the boundary between the two
radar sweeps in the imagery.
I wonder what is causing this, is the Irish radar simply not picking up
the more distant precipitation properly or is there an imbalance in the
calibration of the two radars?

http://www.metoffice.gov.uk/weather/uk/radar/index.html
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Col

Bolton, Lancashire
160m asl


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Old August 31st 09, 01:59 PM posted to uk.sci.weather
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Default The cold front

"Will Hand" wrote in message
...
Looking at radar and satellite imagery for midday it seems most active in
the south. Where is the heavy rainfall that was expected over Cumbria by
now, for example? Interesting orographic patch over south Wales. Satellite
imagery indicates strong rearward-sloping ascent in SW approaches and
weaker ascent further north over Ireland.

Will


Give it time, Will. The 6 hour 00Z GM accumulations indicate the heavier
precip. along the front will move NE during the 2nd half of today
http://www2.wetter3.de/Fax/00_UKMet_T2m_Prec_06_24f.gif

Jon.

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Old August 31st 09, 08:37 PM posted to uk.sci.weather
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Default The cold front

2 areas of embedded thunderstorms currently being detected within the
frontal zone, one over NE England and another over SW Wales
http://andvari.vedur.is/athuganir/el.../i_dag_na.html

Newcastle reporting thunderstorms in the vicinity
EGNT 311920Z 23006KT 5000 -RA VCTS FEW010CB BKN049 16/15 Q1001=

Jon.

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Old August 31st 09, 11:21 PM posted to uk.sci.weather
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Default The cold front

Jon O'Rourke wrote:
2 areas of embedded thunderstorms currently being detected within the
frontal zone, one over NE England and another over SW Wales
http://andvari.vedur.is/athuganir/el.../i_dag_na.html

Newcastle reporting thunderstorms in the vicinity
EGNT 311920Z 23006KT 5000 -RA VCTS FEW010CB BKN049 16/15 Q1001=

Jon.


There were 2 regions of activity, one near the airport and the other to
my SW and over the North Sea. Lightning at about one every 10 seconds
but TS wasn't significant enough (and too far away) here to warrant a
(WR). Torrential rain here in Wallsend.

Les


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Old September 1st 09, 06:41 AM posted to uk.sci.weather
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Default The cold front

On Aug 31, 11:21*pm, Les Crossan
wrote:
Jon O'Rourke wrote:
2 areas of embedded thunderstorms currently being detected within the
frontal zone, one over NE England and another over SW Wales
http://andvari.vedur.is/athuganir/el.../i_dag_na.html


Newcastle reporting thunderstorms in the vicinity
EGNT 311920Z 23006KT 5000 -RA VCTS FEW010CB BKN049 16/15 Q1001=


Jon.


There were 2 regions of activity, one near the airport and the other to
my SW and over the North Sea. Lightning at about one every 10 seconds
but TS wasn't significant enough (and too far away) here to warrant a
(WR). Torrential rain here in Wallsend.

Les


Not a drop of rain from that front in Dawlish.
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Old September 1st 09, 08:12 AM posted to uk.sci.weather
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Default The cold front


"Dawlish" wrote in message
...
On Aug 31, 11:21 pm, Les Crossan
wrote:
Jon O'Rourke wrote:
2 areas of embedded thunderstorms currently being detected within the
frontal zone, one over NE England and another over SW Wales
http://andvari.vedur.is/athuganir/el.../i_dag_na.html


Newcastle reporting thunderstorms in the vicinity
EGNT 311920Z 23006KT 5000 -RA VCTS FEW010CB BKN049 16/15 Q1001=


Jon.


There were 2 regions of activity, one near the airport and the other to
my SW and over the North Sea. Lightning at about one every 10 seconds
but TS wasn't significant enough (and too far away) here to warrant a
(WR). Torrential rain here in Wallsend.

Les


Not a drop of rain from that front in Dawlish.

====

A tiny 0.2mm in Haytor and once again no thunder. Very disappointing given
the colourful radar display :-(

Will
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