I've just been to look at the std raingauge, expecting to find snow in
the top collector and nothing in the bottle. But I found nothing in the
top either, in spite of the 4.5cm of snow we had yesterday. What am I to
make of that? And how do I measure the ppn for the records?

Puzzled of Evershot (aka Hugh)

--

Hugh Newbury

www.evershot-weather.org

On 7 Jan, 08:55, Hugh Newbury wrote:
I've just been to look at the std raingauge, expecting to find snow in
the top collector and nothing in the bottle. But I found nothing in the
top either, in spite of the 4.5cm of snow we had yesterday. What am I to
make of that? And how do I measure the ppn for the records?

Puzzled of Evershot (aka Hugh)

--

Hugh Newbury

www.evershot-weather.org

Is it possible that the snow has been blown out of the top by the
wind. If its any help my 7cm equates to 5.9mm of rain in Wanstead,
East London (32m). Meanwhile up the road at 70m 15cm fell! - the snow
was probably a lot lighter and therefore deeper...

"Hugh Newbury" wrote in message
...
I've just been to look at the std raingauge, expecting to find snow
in the top collector and nothing in the bottle. But I found nothing
in the top either, in spite of the 4.5cm of snow we had yesterday.
What am I to make of that? And how do I measure the ppn for the
records?

Puzzled of Evershot (aka Hugh)


.... most odd, but I suppose it could have been scoured out when the
wind picked up, though if your snow was the same type as ours (rather
wet), I don't like that explanation - *something* should have
survived!

Try doing a sample (upturned funnel/hold by sliding a card underneath
if it won't stick to the inside of the funnel), then melting steadily
and find out what the water equivalent is. Not ideal, but you
obviously had some PPN, and I can't think of another way of getting to
a figure.

Here in West Moors, the PPN equivalent was 2.3 mm from the snow that
fell between 0940Z & 13Z, some thereafter, but nothing to add to
total. The snow *depth* was never more than 1 cm, and this morning,
though it is technically a snow cover (for climatological purposes),
hardly comes up to 0.5 cm. We must be one of the least 'snow-worthy'
parts of the entire British Isles!

Martin.


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

Martin Rowley wrote:

....

Try doing a sample (upturned funnel/hold by sliding a card underneath
if it won't stick to the inside of the funnel), then melting steadily
and find out what the water equivalent is. Not ideal, but you
obviously had some PPN, and I can't think of another way of getting to
a figure.

Here in West Moors, the PPN equivalent was 2.3 mm from the snow that
fell between 0940Z & 13Z, some thereafter, but nothing to add to
total. The snow *depth* was never more than 1 cm, and this morning,
though it is technically a snow cover (for climatological purposes),
hardly comes up to 0.5 cm. We must be one of the least 'snow-worthy'
parts of the entire British Isles!

Thanks for that, Martin. I've done it and it comes out at 3.6mm. That
was after 15min in a Pyrex bowl in the bottom oven of my AGA!

Whitehead's figure was useful as a check. His figure would have been
3.8mm if his depth had been 4.5mm like mine. So my 3.6mm is quite as
close as I can expect from my rough-and-ready method.

Thanks both.

Hugh

--

Hugh Newbury

www.evershot-weather.org

Hugh Newbury wrote:
I've just been to look at the std raingauge, expecting to find snow in
the top collector and nothing in the bottle. But I found nothing in the
top either, in spite of the 4.5cm of snow we had yesterday. What am I to
make of that? And how do I measure the ppn for the records?

Puzzled of Evershot (aka Hugh)


Could a fox have eaten the snow ?

Joe Egginton wrote:
Hugh Newbury wrote:
I've just been to look at the std raingauge, expecting to find snow in
the top collector and nothing in the bottle. But I found nothing in
the top either, in spite of the 4.5cm of snow we had yesterday. What
am I to make of that? And how do I measure the ppn for the records?

Puzzled of Evershot (aka Hugh)


Could a fox have eaten the snow ?

Ho, ho! But there was enough about for him to eat without having to come
to my garden, find the raingauge, and take a mouthful. And the only
footprints are of birds and a cat.

But nice try, Joe!

Hugh

--

Hugh Newbury

www.evershot-weather.org