Re: Wet in the west - West Freugh 41.0 mm

John Hall wrote in message ...

: Colin Youngs <colin.youngs@xxxxxxxxxx> writes:
:>06.00 - Weybourne and Coltishall -4.8°C, Leeming -4.9°C,
:> Topcliffe -5.3°C, Aboyne -5.5°C, Charterhall -5.7°C, Redesdale -6.1°C,
:>Copley -6.6°C, Donna Nook -8.2°C, Leconfield -9.1°C.

:>09.00 - Glen Ogle -4.9°C, Boltshope Park -5.0°C.

:>06.00 - Belfast Aldergrove and Plymouth 3.5°C, Tiree 3.7°C, Camborne
and
:>St Mawgan 4.7°C, Culdrose 5.2°C, St Mary's 10.3°C.

:Are the 6:00 temperatures the lowest reported at those sites up to 6am
:rather than actually measured at 6am?

Lowest min. temps labelled 09.00 are the lowest temperatures recorded over
the 12 hours ending 09.00 and listed on the Met Office website
http://www.metoffice.gov.uk/weather/europe/uk/obs/yesterday.html

Those labelled 06.00 come from
http://www.thisisbournemouth.co.uk/dorset/weather/minmax.html . That site
does not state the time of measurement but comparison with other sources
suggests that they are the lowest temperatures recorded over the 12 hours
ending 06.00 on the day in question. Where a station listed on this
website is a synop station, the figure given is normally that reported in
the synop as the 12-hour minimum at 06.00 - e.g. Leeming -4.9°C on Friday.
I assume that the figures listed for "non-synop" stations cover the same
period.

Highest min. temps are taken only from the 06.00 synop reports and thus
cover the 12-hour period ending at 06.00. As the number of stations
offering publicly available synop reports is quite limited, the list of
"highest minima" is much less comprehensive than the list of "lowest
minima".

Highest/lowest max. temps come from the Met Office website and cover the 12
hours ending 18.00.

Rainfall totals stated to one decimal place come from the Met Office website
and cover the 24 hours ending 18.00. Rainfall totals stated in whole
numbers come from "This is Bournemouth" and - supposedly - cover the same
period. Even so, there are discrepancies between the two sets of figures
that cannot be explained as mere "rounding errors" - e.g. Machrihanish 33.6
mm on the Met Office website but 36 mm on the other one. I have not been
able to obtain any explanation for these inconsistencies.

Colin Youngs
Brussels




.

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