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 May 7th 11, 10:10 AM posted to uk.sci.weather
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Default [OBS] Evershot, WDorset: Sat 07/05/11

Evershot, WDorset: 185m (607ft) amsl
09:00z 07/05/11
13.8°C
Max 20.0°C, min 12.1°C
Dewpoint 13.2°C
RH 96%
Wind 0.7 kts ESE
1008.7 hPa Steady
Ppn (standard gauge) 10.7mm last 24hrs
Ppn (standard gauge) 11.2mm this month
Ppn (standard gauge) 30-day rolling total 18.5mm
Ppn (AWS) 6.6mm last 24hrs
Ppn (AWS) 7.0mm this month

Overcast, drizzle, warm, slight breeze

Hugh

--

Hugh Newbury

www.evershot-weather.org

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Old May 7th 11, 11:04 AM posted to uk.sci.weather
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Default [OBS] Evershot, WDorset: Sat 07/05/11

"Hugh Newbury" wrote ...
Evershot, WDorset: 185m (607ft) amsl
09:00z 07/05/11
Ppn (standard gauge) 10.7mm last 24hrs
Ppn (standard gauge) 11.2mm this month
Ppn (standard gauge) 30-day rolling total 18.5mm
Ppn (AWS) 6.6mm last 24hrs
Ppn (AWS) 7.0mm this month

Overcast, drizzle, warm, slight breeze
www.evershot-weather.org



.... well the 'significant' rain duly arrived as briefly noted last
night. Three thundery episodes ...

06/1935Z - 06/2023Z, never particularly spectacular here (though note
report of possible weak tornado Christchurch nearby).

06/2112Z - 06/2120Z, thunder heard, several muffled rumbles, again, as
above, the activity seemed to be towards the SE or SSE and never
overhead; discharge every 10-15 seconds or so, mainly CC/IC, but a
couple of bright/vivid CG strokes seen - something like 5 km away to
SE which, if striking objects, must have left some impact.

07/0558Z - 07/0630Z (latter time determined by the 10-minute rule):
weak, low audio-frequency rumbles fairly near, with short period of
moderate/heavy rain around the start of the period, soon becoming
slight.

Total rainfall in rain-day ending 07/0900Z = 11.2 mm which represents
roughly a fifth of our eLTA 1971-2000, useful, but already evaporating
readily despite the rather high dew points (13degC).

Repeat performance possible this evening I fancy ....

Martin.



--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N Long: 01.88W
NGR: SU 082 023


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Old May 7th 11, 11:29 AM posted to uk.sci.weather
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Default [OBS] Evershot, WDorset: Sat 07/05/11

On 07/05/11 11:04, Martin Rowley wrote:

....


07/0558Z - 07/0630Z (latter time determined by the 10-minute rule):
weak, low audio-frequency rumbles fairly near, with short period of
moderate/heavy rain around the start of the period, soon becoming
slight.


Martin, what's the 10-minute rule?

Total rainfall in rain-day ending 07/0900Z = 11.2 mm which represents
roughly a fifth of our eLTA 1971-2000, useful, but already evaporating
readily despite the rather high dew points (13degC).


Almost identical to here. It was probably the same cloud system passing by.

Repeat performance possible this evening I fancy ....


I'm sure you're right. It looks like something rather longer, though
perhaps intermittent.

Hugh
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Old May 7th 11, 11:30 AM posted to uk.sci.weather
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Default Evershot, WDorset: Sat 07/05/11


Total rainfall in rain-day ending 07/0900Z = 11.2 mm which represents
roughly a fifth of our eLTA 1971-2000, useful, but already evaporating
readily despite the rather high dew points (13degC).

Repeat performance possible this evening I fancy ....

Martin.

--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N * Long: 01.88W
NGR: SU 082 023


A very welcome spell of rain here as well, Martin, with 14.4mm emptied
from the gauge at 0900Z. This makes it the wettest 'rainfall day' this
year and represents 24% of the 1981-2010 May average.

Dick Lovett
Charlbury (Oxfordshire Cotswolds) 122m
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Old May 7th 11, 12:00 PM posted to uk.sci.weather
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Default [OBS] Evershot, WDorset: Sat 07/05/11

On 07/05/11 11:04, Martin Rowley wrote:
07/0558Z - 07/0630Z (latter time determined by the 10-minute rule):
weak, low audio-frequency rumbles fairly near, with short period of
moderate/heavy rain around the start of the period, soon becoming
slight.


"Hugh Newbury" wrote ...


Martin, what's the 10-minute rule?


.... sorry Hugh, meant to write it in .... if you can't obviously see
that a thunderstorm has passed the 'station' or observing point, then
it is considered that the thunderstorm has ceased 10 minutes after the
last thunder heard.

Martin.


--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N Long: 01.88W
NGR: SU 082 023




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Old May 7th 11, 04:46 PM posted to uk.sci.weather
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Default [OBS] Evershot, WDorset: Sat 07/05/11

On 07/05/11 10:10, Hugh Newbury wrote:
Evershot, WDorset: 185m (607ft) amsl
09:00z 07/05/11
13.8°C
Max 20.0°C, min 12.1°C
Dewpoint 13.2°C
RH 96%
Wind 0.7 kts ESE
1008.7 hPa Steady
Ppn (standard gauge) 10.7mm last 24hrs
Ppn (standard gauge) 11.2mm this month
Ppn (standard gauge) 30-day rolling total 18.5mm
Ppn (AWS) 6.6mm last 24hrs
Ppn (AWS) 7.0mm this month

Overcast, drizzle, warm, slight breeze

Hugh




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