: Croscombe/Bowlish Flash Flood - 12th July 2012: Radar Grabs Please -

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Croscombe/Bowlish Flash Flood - 12th July 2012: Radar Grabs Please Shepton Mallet area

#1 User is offline   Uskys 

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Posted 11 July 2012 - 17:05

Just seen the report on itv, one john mason may be interested in.

Croscombe/Bowlish near Shepton Mallet .

2" of rain fell in 15 mins . roads ripped up etc.

BBC

Quote

People have begun clearing up the debris left behind after flash floods struck the Mendips in Somerset earlier.

Bowlish Infants School in Shepton Mallet was evacuated and homes and businesses in Croscombe were also deluged.

The River Sheppey in Croscombe burst its banks flooding a pub and nearby homes in the centre of the village.

The heavy rain also forced the A371 to be closed between Shepton Mallet and Wells.

The Environment Agency said a storm cloud passing over the Shepton Mallet area caused the flooding, when 30mm of rain fell in the space of 30 minutes.

Bowlish House Hotel owner Chris Ashleigh said: "The school informed us at about 10:15 that the fire service told them the river was about to burst its banks and there would be a lot of activity outside the hotel with parents collecting their children.

"Rather than have them out on the road we suggested they were brought inside.

"We've had about 60 to 70 children - they all sat down in the sitting room and dining room and they've all been very well behaved."

Somerset County Council sent a structural engineer to inspect a wall near the school which is holding back floodwater. The school will remain closed on Thursday as a precaution.

A small section of the river wall in Croscombe was hammered down by a local resident to drain the water away.

Local resident, Peter Baron, said: "There was about two foot of water on the road and so some citizens turned up with their sledgehammers and bashed the wall down, a big water spout appeared and the road cleared quickly after that."

Devon and Somerset Fire and Rescue said heavy rainfall had also affected parts of Wells, such as Church Street which was under 2ft (60cm) of water in places earlier.

A spokesman for the fire service said crews had attended several properties to pump out water and to clear debris from roads.

Earlier heavy rainfall left some roads in Wookey and Shepton Mallet, such as Cannards Grave Road in Shepton under water, but this has now cleared.

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#2 User is offline   StephenS 

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Posted 11 July 2012 - 17:56

Some more links:
http://www.thisissom...tail/story.html

http://www.wellspeop...l/pictures.html

I was very surprised to see this just now on the local news. I've been out and about all day, and the weather on this side of the Mendips could hardly have been more different!
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#3 User is online   Nigel Bolton 

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Posted 11 July 2012 - 21:43

Looks lie Shepton Mallet got hammered.

N.


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#4 User is online   Updraught 

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Posted 11 July 2012 - 21:54

Could have been a few anvils overhead.
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#5 User is online   Bazmundo 

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Posted 12 July 2012 - 00:55

Radar animation prior to 8.30am, courtesy weatheronline. Location of Croscome for comparison attached.


Posted Image

Attached thumbnail(s)

  • Attached Image: croscombe.PNG

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#6 User is offline   Uskys 

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Posted 12 July 2012 - 06:17

Thanks Glyn, whilst the resolution isn't that good there is one frame that does indicate a cloudburst or microburst.

fwiw, it seems to me that the heavy rain which skirted along the southern edge of the Mendips and caused flooding totalled around 30mm, in addition to this at or very close to Croscombe a further 50mm fell in a very short time from a microburst. ( I may be wrong though the way gates and banks were washed away and tarmac ripped up indicates a severity that doesn't tally with the amounts recorded at Shepton mallet)

Also , bear in mind the conflicting reports and how they may be mis-read, one suggests 30mm fell in 30mins another seemingly more accurate in its description was the 50mm in 15mins close to croscombe...though I've yet to find an EA rain gauge in the area.
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#7 User is online   John Mason 

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Posted 12 July 2012 - 08:11

It's that magic figure again.... once rainfall rates exceed 1mm/minute then all hell tends to break loose! Thanks for flagging this up.

Cheers - John
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#8 User is online   Bazmundo 

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Posted 12 July 2012 - 11:03

I've saved the Copernicus radar, integrated liquid water and atmospheric water content output from Chilbolton for yesterday; as it looks as though the remnants drifted across there shortly after. Shows possibly up to 40 dBZ in the lowest 2km below the FZL, and it does look to be a bit stronger than ordinary Cb returns I've seen on there..?

Not sure about their image use policy, so won't post them; by all means pm me if anyone wants them (they're still available today at the above link, under 'yesterday's data').
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