Very heavy snow around 0600, thunder at 0603

On 6 Apr, 08:58, wrote:
Very heavy snow around 0600, thunder at 0603

First lying snow (50% cover) in April here since 26 April 1981, which
had 4 cm (but much later in the month). Only the third day with snow
cover in April since 1973 (11 April 1978, 26 April 1981) although
several mornings have had 50% cover.

Greatest depth of lying snow here since 7 Feb 1986 (13 cm).

Rainfall equivalent 8.4 mm. A high depth for this amount of rain, but
I took an average of about 20 samples for snow depth and have
confidence in my depth figure of 11 cm.

Cloud just beginning to break, watery sunshine appearing.

--
Stephen Burt
Stratfield Mortimer, Berkshire

On 6 Apr, 09:39, wrote:
On 6 Apr, 08:58, wrote:

Very heavy snow around 0600, thunder at 0603

First lying snow (50% cover) in April here since 26 April 1981, which
had 4 cm (but much later in the month). Only the third day with snow
cover in April since 1973 (11 April 1978, 26 April 1981) although
several mornings have had 50% cover.

Greatest depth of lying snow here since 7 Feb 1986 (13 cm).

Rainfall equivalent 8.4 mm. A high depth for this amount of rain, but
I took an average of about 20 samples for snow depth and have
confidence in my depth figure of 11 cm.

Cloud just beginning to break, watery sunshine appearing.

--
Stephen Burt
Stratfield Mortimer, Berkshire

Cloud now clearing, brilliant sunshine in deep blue sky, the glare
from the still complete snow cover is hard on the eys but makes for
good photographs. Solar radiation near 900 W/m2, air temp still
struggling at 4°C.

--
Stephen Burt
Stratfield Mortimer, Berkshire

On Apr 6, 12:49*pm, wrote:
On 6 Apr, 09:39, wrote:





On 6 Apr, 08:58, wrote:

Very heavy snow around 0600, thunder at 0603

First lying snow (50% cover) in April here since 26 April 1981, which
had 4 cm (but much later in the month). Only the third day with snow
cover in April since 1973 (11 April 1978, 26 April 1981) although
several mornings have had 50% cover.

Greatest depth of lying snow here since 7 Feb 1986 (13 cm).

Rainfall equivalent 8.4 mm. A high depth for this amount of rain, but
I took an average of about 20 samples for snow depth and have
confidence in my depth figure of 11 cm.

Cloud just beginning to break, watery sunshine appearing.

--
Stephen Burt
Stratfield Mortimer, Berkshire

Cloud now clearing, brilliant sunshine in deep blue sky, the glare
from the still complete snow cover is hard on the eys but makes for
good photographs. Solar radiation near 900 W/m2, air temp still
struggling at 4°C.

--
Stephen Burt
Stratfield Mortimer, Berkshire- Hide quoted text -

- Show quoted text -

Similar in some respects to what we have here. Snow depth on
grass 10 cm (and on top of screen). Measured 6.8 mm rainfall
equivalent, so a high snow depth for this amount. The sky, however is
still rather leaden and a bit yellowish (8 oktas) and very light snow
is still falling. The sky is brightening but there is nothing
resembling sunshine at the moment or any sign of it to the north-
west. Wind N force 2-3 and temperature 1.5°C so there's a possibility
this may be my lowest April max in 25 years' recording. The record at
the moment is 2.1°C on 5 Apr 89 when 6 inches of snow fell during the
morning.

Tudor Hughes, Warlingham, Surrey, 556 ft.

wrote in message
...
On 6 Apr, 08:58, wrote:
Very heavy snow around 0600, thunder at 0603

First lying snow (50% cover) in April here since 26 April 1981, which
had 4 cm (but much later in the month). Only the third day with snow
cover in April since 1973 (11 April 1978, 26 April 1981) although
several mornings have had 50% cover.

Greatest depth of lying snow here since 7 Feb 1986 (13 cm).

Rainfall equivalent 8.4 mm. A high depth for this amount of rain, but
I took an average of about 20 samples for snow depth and have
confidence in my depth figure of 11 cm.

Cloud just beginning to break, watery sunshine appearing.


Nice one Stephen, I hope your two girls enjoyed it!

I'm guessing the snow was powdery, given the depth/rainfall ratio?

Will
--

On 6 Apr, 16:43, "Will Hand" wrote:


I'm guessing the snow was powdery, given the depth/rainfall ratio?

Will

Yes Will, very powdery ... The heavy snow started here at 0535, at
which time the temp had risen to 1.1°C, but it then fell quickly to
just below 0°C by 0610. Most of the heaviest snowfall fell at
-0.2°/-0.3°C which probably accounts for the high depth compared to
the rainfall caught in the gauge (and I see others on here have
commented on the high ratio too). I suspect some snow may also have
been blown over the gauge because it was windy during the snowfall
(gust 20 kn at 0600).

We must have caught a local convective cell (thunder at 0603) which
gave us the extra precipitation, because my depth of 11 cm was
carefully sampled and yet places all around us and not far away seem
to have caught only about half that depth. I didn't see it all fall,
but it looks as though most of the 11 cm fell in less than an hour,
which would make it just about the heaviest short-period snowfall I've
seen in this country. Amazingly, our deepest snow for over 20 years
here, and it falls in an hour. Beats Dartmoor any day ;-)

Two further light snow showers pm - one from a Cu humilis, no more -
and a heavier one at dusk; the ground is thinly covered with snow once
more, with a few thicker drifts left from this morning's fall.

--
Stephen Burt
Stratfield Mortimer, Berkshire

On 6 Apr, 21:36, wrote:
On 6 Apr, 16:43, "Will Hand" wrote:



I'm guessing the snow was powdery, given the depth/rainfall ratio?

Will

Yes Will, very powdery ... The heavy snow started here at 0535, at
which time the temp had risen to 1.1°C, but it then fell quickly to
just below 0°C by 0610. Most of the heaviest snowfall fell at
-0.2°/-0.3°C which probably accounts for the high depth compared to
the rainfall caught in the gauge (and I see others on here have
commented on the high ratio too). I suspect some snow may also have
been blown over the gauge because it was windy during the snowfall
(gust 20 kn at 0600).

We must have caught a local convective cell (thunder at 0603) which
gave us the extra precipitation, because my depth of 11 cm was
carefully sampled and yet places all around us and not far away seem
to have caught only about half that depth. I didn't see it all fall,
but it looks as though most of the 11 cm fell in less than an hour,
which would make it just about the heaviest short-period snowfall I've
seen in this country. Amazingly, our deepest snow for over 20 years
here, and it falls in an hour. Beats Dartmoor any day ;-)

Two further light snow showers pm - one from a Cu humilis, no more -
and a heavier one at dusk; the ground is thinly covered with snow once
more, with a few thicker drifts left from this morning's fall.

--
Stephen Burt
Stratfield Mortimer, Berkshire

Last patch of snow from Sunday's fall (not a snowman!) melted late
this morning.

--
Stephen Burt
Stratfield Mortimer, Berkshire

wrote:

On 6 Apr, 21:36, wrote:
On 6 Apr, 16:43, "Will Hand" wrote:



I'm guessing the snow was powdery, given the depth/rainfall ratio?

Will

Yes Will, very powdery ... The heavy snow started here at 0535, at
which time the temp had risen to 1.1°C, but it then fell quickly to
just below 0°C by 0610. Most of the heaviest snowfall fell at
-0.2°/-0.3°C which probably accounts for the high depth compared to
the rainfall caught in the gauge (and I see others on here have
commented on the high ratio too). I suspect some snow may also have
been blown over the gauge because it was windy during the snowfall
(gust 20 kn at 0600).

We must have caught a local convective cell (thunder at 0603) which
gave us the extra precipitation, because my depth of 11 cm was
carefully sampled and yet places all around us and not far away seem
to have caught only about half that depth. I didn't see it all fall,
but it looks as though most of the 11 cm fell in less than an hour,
which would make it just about the heaviest short-period snowfall
I've seen in this country. Amazingly, our deepest snow for over 20
years here, and it falls in an hour. Beats Dartmoor any day ;-)

Two further light snow showers pm - one from a Cu humilis, no more -
and a heavier one at dusk; the ground is thinly covered with snow
once more, with a few thicker drifts left from this morning's fall.

--
Stephen Burt
Stratfield Mortimer, Berkshire

Last patch of snow from Sunday's fall (not a snowman!) melted late
this morning.

Stephen, you certainly must have had a great deal more than we got
here. All trace of it had disappeared by early afternoon on Sunday even
though there was a level covering of about 6 cm at breakfast time.

Norman
--
Norman Lynagh
Chalfont St Giles, Buckinghamshire
85m a.s.l.
(remove "thisbit" twice to e-mail)

On Apr 9, 9:57�pm, wrote:
On 6 Apr, 21:36, wrote:





On 6 Apr, 16:43, "Will Hand" wrote:

I'm guessing the snow was powdery, given the depth/rainfall ratio?

Will

Yes Will, very powdery ... The heavy snow started here at 0535, at
which time the temp had risen to 1.1�C, but it then fell quickly to
just below 0�C by 0610. Most of the heaviest snowfall fell at
-0.2�/-0.3�C which probably accounts for the high depth compared to
the rainfall caught in the gauge (and I see others on here have
commented on the high ratio too). I suspect some snow may also have
been blown over the gauge because it was windy during the snowfall
(gust 20 kn at 0600).

We must have caught a local convective cell (thunder at 0603) which
gave us the extra precipitation, because my depth of 11 cm was
carefully sampled and yet places all around us and not far away seem
to have caught only about half that depth. I didn't see it all fall,
but it looks as though most of the 11 cm fell in less than an hour,
which would make it just about the heaviest short-period snowfall I've
seen in this country. Amazingly, our deepest snow for over 20 years
here, and it falls in an hour. Beats Dartmoor any day ;-)

Two further light snow showers pm - one from a Cu humilis, no more -
and a heavier one at dusk; the ground is thinly covered with snow once
more, with a few thicker drifts left from this morning's fall.

--
Stephen Burt
Stratfield Mortimer, Berkshire

Last patch of snow from Sunday's fall (not a snowman!) melted late
this morning.

--
Stephen Burt
Stratfield Mortimer, Berkshire- Hide quoted text -

- Show quoted text -

Just been outside to check on our last patch of snow following the
11cm fall here early on Sunday. It is still there, but only the size
of my hand, and with the temperature at 5.5C, the sky overcast and a
light shower also falling, it wont last much longer.

Dick Lovett

Charlbury