Rainfall at Kenley

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Richard Griffith
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Location: Horsham West Sussex
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Rainfall at Kenley

Post by Richard Griffith » Wed Jun 08, 2016 6:00 pm

I heard on the Radio 4 forecast early this morning that 48mm of rain fell at Kenley in Surrey during yesterdays storms.Does any know what time and over what time period this fell? I had thunder at my location around midday and further thunder during the evening but only recorded 6.3mm up to 09h this morning.

Regards
Richard Griffith
Amateur Meteorologist
Horsham, West Sussex
follow me on twitter @Metman062

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Martin Rowley
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Joined: Sat Dec 12, 2015 8:32 pm
Location: West Moors, East Dorset

Re: Rainfall at Kenley

Post by Martin Rowley » Thu Jun 09, 2016 8:18 am

Richard Griffith wrote:I heard on the Radio 4 forecast early this morning that 48mm of rain fell at Kenley in Surrey during yesterdays storms.Does any know what time and over what time period this fell? I had thunder at my location around midday and further thunder during the evening but only recorded 6.3mm up to 09h this morning.
Regards
Based on the SYNOP data (listed below - courtesy of OgiMet site), the sequence of events is as follows:-

1200Z .. No PPN; OAT = 22.0degC
1300Z .. Intermittent rain - violent: visibility 1200M; OAT = 19.0degC
1400Z .. Rain, not freezing, heavy: visibility 10 km; OAT = 15.4degC
1500Z .. Rain, not freezing, moderate: visibility 12 km; OAT = 15.6degC
1600Z .. Rain, not freezing, slight: 16 km; OAT = 17.3degC
1700Z .. Rain (non-freezing) in past hour [but not at observation]: 25 km; OAT = 20.2degC
1800Z .. No PPN: 40 km [total rain period 06-18Z = 48 mm, but as no rain accumulation was recorded at 12Z, then we can infer that the 48 mm was recorded between 12 and 18Z.]; OAT = 19.5degC, Tmax = 23.0degC, possibly just before the intense rain set in.

Moreover, from the hourly observations (the Met Office will have 10 minute data [or better] from this AWS), I'd suggest that the bulk of this PPN fell from a time a short time before 13Z to just after 14Z.

I've had a look at the archive radar on MeteoX.com but the resolution available there isn't good enough to fine-tune the above.

Martin.


201606071800 AAXX 07184 03781 15982 /0902 10195 20159 30024 40225 56002 60482
333 10230 553// 21088 82/61=
201606071700 AAXX 07174 03781 47975 /0602 10202 20161 30023 40223 56011 723//
333 553// 21448 81/65=
201606071600 AAXX 07164 03781 47866 /0504 10173 20165 30022 40225 58010 761//
333 553// 20521 87/57=
201606071500 AAXX 07154 03781 47762 /0401 10156 20152 30026 40230 58001 762//
333 553// 20139 87/56=
201606071400 AAXX 07144 03781 47560 /2306 10154 20146 30033 40237 53005 763//
333 553// 20068 81/23 86/50 90710 91126=
201606071300 AAXX 07134 03781 47512 /0805 10190 20162 30031 40232 52004 784//
333 553// 20453 85/26 84/36=
201606071200 AAXX 07124 03781 15677 /0105 10220 20155 30027 40226 51001 60001
333 553// 22078 84/33
Martin Rowley
West Moors, East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall/TRSHEUN=CC-A03-

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Richard Griffith
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Location: Horsham West Sussex
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Re: Rainfall at Kenley

Post by Richard Griffith » Thu Jun 09, 2016 8:39 am

Thank you Martin for your very comprehensive reply
Since my post a friend of mine confirmed 48mm in the hour as you mention.

Reagrds
Richard Griffith
Amateur Meteorologist
Horsham, West Sussex
follow me on twitter @Metman062

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