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Old February 25th 04, 07:17 AM posted to uk.sci.weather
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Default [WR] snow grains early hours Weds .. Bracknell

..... a sprinkling of what an observer I used to work with at Finningley
called 'sago'; snow grains scattered about - not sure exactly what time
they fell, but before 06Z and after 23Z last night - I suspect that
after the main frontal stuff cleared (by 21Z yesterday/Tuesday) we had
some stratus formation, and they fell from that - nothing showing on the
radar from the trough line this far west, so unlikely to be from
something deeper.

[ Can someone remind me - because I've forgotten ;-( .... if this is the
*only* 'wintry' precipitation in this 24hr, as they seem likely to be
for us, does this count as a 'day of snow'? ]

--
Martin Rowley: data via -
http://homepage.ntlworld.com/booty.weather/metindex.htm
Bracknell (Wooden Hill/Tawfield), Berkshire
NGR: SU 854 667
Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W)



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Old February 25th 04, 07:43 AM posted to uk.sci.weather
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Default [WR] snow grains early hours Weds .. Bracknell

"Martin Rowley" wrote in message
...
[ Can someone remind me - because I've forgotten ;-( .... if this is

the
*only* 'wintry' precipitation in this 24hr, as they seem likely to be
for us, does this count as a 'day of snow'? ]


Hi, Martin,

Yes, it counts as a day of snow as long as it is "solid precipitation of
an opaque, white, crystalline nature, either soft (as in snowflakes) or
in the form of grains or pellets which may be hard enough to bounce"

Straight from Metform 3100A "Instructions for completing monthly returns
for Metform 3208B"

HTH


--
Ken Cook, Copley (5miles north of Barnard Castle), County Durham.
830ft
http://mysite.freeserve.com/copley
(MO climat. site updated before 10Z and 19Z daily)
kencookATcopleydurham.freeserve.co.uk


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Old February 25th 04, 08:30 AM posted to uk.sci.weather
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Default [WR] snow grains early hours Weds .. Bracknell


"Ken Cook" wrote in message
...
"Martin Rowley" wrote in message
...
[ Can someone remind me - because I've forgotten ;-( .... if this is

the
*only* 'wintry' precipitation in this 24hr, as they seem likely to

be
for us, does this count as a 'day of snow'? ]


Hi, Martin,

Yes, it counts as a day of snow as long as it is "solid precipitation

of
an opaque, white, crystalline nature, either soft (as in snowflakes)

or
in the form of grains or pellets which may be hard enough to bounce"

Straight from Metform 3100A "Instructions for completing monthly

returns
for Metform 3208B"

.... many thanks: the reason I couldn't remember/was confused was because
in the NCM message, in the group 6HTFG, snow grains goes with the 'H'
category [ days of hail, ice etc. ] (code = 2), and not in the 7Ssss
group [ days of snow or sleet ](where S is either 0, none, 1 sleet, 5
snow).

To show how fine the stuff was, quite a few grains fell right through
the rain-gauge funnel into the collector.

Thanks again,

Martin.





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