An intense but quite brief thunderstorm today started around 12:15, this
being the first thunderstorm of the month and ending an un-thundery
spell that started on the 19th July.

Rare large (0.5 mm) hail accompanied the thunder and lightning and then
seemed to the turn to big snowflakes and gave a light covering. It
wasn't actually snow (temperature was 17C at the time) but partially
melted 'fluffy' hail. Quite bizarre though and a shame I didn't manage
to get a photo. I am awaiting reports in the local press of 'summer snow'.

Other than that and the rather beautiful sky-scape of towering, dazzling
cumulonimbus clouds against the deepest of blue skies, it has been a
pleasant sort of day. Even managed a couple of hours in the hammock this
afternoon.

Minimum = 13.2C
Maximum = 20.7C
Rain = 7.9 mm
Sunshine = 8.6 hours (19:00).

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

On Friday, 18 August 2017 19:06:12 UTC+1, Nick Gardner wrote

Rare large (0.5 mm) hail accompanied the thunder and lightning
0.5 mm is neither large nor rare. Are you sure about the units?

--
Freddie

On 18/08/2017 21:12, Freddie wrote:
0.5 mm is neither large nor rare. Are you sure about the units?
A typo, surely you know I meant centimetres!

Which is rare around here as in all the years I've been sending data to
to COL, I've only ever 'ticked' that box (0.5 cm) three or four times.

--
Nick G
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

Oh okay, fair enough. I thought the units used were mm rather than cm. But still a typo like you said :-)

On 18/08/2017 19:06, Nick Gardner wrote:
An intense but quite brief thunderstorm today started around 12:15, this
being the first thunderstorm of the month and ending an un-thundery
spell that started on the 19th July.

Rare large (0.5 mm) hail accompanied the thunder and lightning and then
seemed to the turn to big snowflakes and gave a light covering. It
wasn't actually snow (temperature was 17C at the time) but partially
melted 'fluffy' hail. Quite bizarre though and a shame I didn't manage
to get a photo. I am awaiting reports in the local press of 'summer snow'.

Other than that and the rather beautiful sky-scape of towering, dazzling
cumulonimbus clouds against the deepest of blue skies, it has been a
pleasant sort of day. Even managed a couple of hours in the hammock this
afternoon.

Minimum = 13.2C
Maximum = 20.7C
Rain = 7.9 mm
Sunshine = 8.6 hours (19:00).

------------------------------------------------------------
I remember a day in Sydney in the early 90's when the temperature was
about 30C in the morning then this storm quickly developed giving
hailstones larger than peas which quickly covered the grass to a couple
of cm. Weird feeling dripping with sweat one minute then briefly looking
at a scene full of ice!
Dave

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