Strange looking clouds over west Essex now ,look like mountain cloud but
that is quite rare in Essex !

RonB

On Jun 23, 11:13*am, "ronaldbutton" wrote:
Strange looking clouds over west Essex now ,look like mountain cloud but
that is quite rare in Essex !

RonB

Same sort of thing from SE Lincolnshire between 0800 and 0900 this
morning. AC Lenticularis to the South East (probably over NW Norfolk)
in a light SSE breeze. Not sure I've seen it in these parts without a
westerly breeze before.

All gone now, clear blue sky and 20c (DP 14c).

Regards

Paul

"seasend" wrote in message
...
On Jun 23, 11:13 am, "ronaldbutton" wrote:
Strange looking clouds over west Essex now ,look like mountain cloud
but
that is quite rare in Essex !
RonB

Same sort of thing from SE Lincolnshire between 0800 and 0900 this
morning. AC Lenticularis to the South East (probably over NW
Norfolk)
in a light SSE breeze. Not sure I've seen it in these parts without
a
westerly breeze before.


.... similar sort of thing here (West Moors/East Dorset) and I'm still
trying to figure out what was happening. The relevant ascents (all we
have in these cash-strapped times) don't have wind data on them which
doesn't help; I'm not even sure whether they were Sc len/high-base, or
Ac len/low-base. In the end, I reasoned that they were the caps of
embryonic convective cloud (after a Stratus phase first thing), with
some shear-induced wave action smoothing the tops, until the rising
surface temperature caused the condensation level to rise and
evaporative mixing just cleared them away.

But, that could be a load of old baloney! Any one else got thoughts?

Martin.


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

"Martin Rowley" wrote in message
...
"seasend" wrote in message
...
On Jun 23, 11:13 am, "ronaldbutton" wrote:
Strange looking clouds over west Essex now ,look like mountain cloud
but
that is quite rare in Essex !
RonB

Same sort of thing from SE Lincolnshire between 0800 and 0900 this
morning. AC Lenticularis to the South East (probably over NW
Norfolk)
in a light SSE breeze. Not sure I've seen it in these parts without
a
westerly breeze before.


... similar sort of thing here (West Moors/East Dorset) and I'm still
trying to figure out what was happening. The relevant ascents (all we
have in these cash-strapped times) don't have wind data on them which
doesn't help; I'm not even sure whether they were Sc len/high-base, or
Ac len/low-base. In the end, I reasoned that they were the caps of
embryonic convective cloud (after a Stratus phase first thing), with
some shear-induced wave action smoothing the tops, until the rising
surface temperature caused the condensation level to rise and
evaporative mixing just cleared them away.

But, that could be a load of old baloney! Any one else got thoughts?

Martin.


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


My thoughts, when I saw the Sc len about 10z this morning, were along the
same lines as yours Martin. I think the cloud height was about 5000ft, the
same level as the sheet of Sc had been earlier. Aircraft descending from the
stack to join the approach for Heathrow were regularly making distrails in
it in this vicinity, so definately not higher than 5000ft. I sent a query to
the Met O about the missing winds. Not one of the UK ascents had winds at
midnight, surely not a financial problem, unless the Met O has forgotten to
renew some licence or other!

--
Bernard Burton
Wokingham, Berkshire, UK.

Satellite images at:
www.woksat.info/wwp.html

"Bernard Burton" wrote in message
...

"Martin Rowley" wrote in message
...
"seasend" wrote in message
...
On Jun 23, 11:13 am, "ronaldbutton" wrote:


My thoughts, when I saw the Sc len about 10z this morning, were along the
same lines as yours Martin. I think the cloud height was about 5000ft, the
same level as the sheet of Sc had been earlier. Aircraft descending from
the
stack to join the approach for Heathrow were regularly making distrails in
it in this vicinity, so definately not higher than 5000ft. I sent a query
to
the Met O about the missing winds. Not one of the UK ascents had winds at
midnight, surely not a financial problem, unless the Met O has forgotten
to
renew some licence or other!

Further to my comments about lack of winds on the UK ascents, I have
received a reply from the Met O saying that there is a Europe-wide problem
with the sonde GPS system, and Vaisala are investigating.





--
Bernard Burton
Wokingham, Berkshire, UK.

Satellite images at:
www.woksat.info/wwp.html

Bernard Burton wrote:

"Bernard Burton" wrote in message
...

"Martin Rowley" wrote in message
...
"seasend" wrote in message
...
On Jun 23, 11:13 am, "ronaldbutton" wrote:


My thoughts, when I saw the Sc len about 10z this morning, were along the
same lines as yours Martin. I think the cloud height was about 5000ft, the
same level as the sheet of Sc had been earlier. Aircraft descending from
the
stack to join the approach for Heathrow were regularly making distrails in
it in this vicinity, so definately not higher than 5000ft. I sent a query
to
the Met O about the missing winds. Not one of the UK ascents had winds at
midnight, surely not a financial problem, unless the Met O has forgotten
to
renew some licence or other!

Further to my comments about lack of winds on the UK ascents, I have
received a reply from the Met O saying that there is a Europe-wide problem
with the sonde GPS system, and Vaisala are investigating.




Maybe there's still a few relic GL3 radar cabins lying around that we could
bring back to life Bernard :-)


--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.

"Norman" wrote in message
...
Maybe there's still a few relic GL3 radar cabins lying around that
we could
bring back to life Bernard :-)


..... nah, too girlie: get that theodolite box out of the steel cabinet
and find the slide rule :-)

This afternoon would have been a cracking one for *thinking* you were
following the balloon up to 30 000ft - or was that a liver spot?

Martin.


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

"Norman" wrote in message
...
Bernard Burton wrote:

"Bernard Burton" wrote in message
...

"Martin Rowley" wrote in
message
...
"seasend" wrote in message

...
On Jun 23, 11:13 am, "ronaldbutton" wrote:


My thoughts, when I saw the Sc len about 10z this morning, were along
the
same lines as yours Martin. I think the cloud height was about 5000ft,
the
same level as the sheet of Sc had been earlier. Aircraft descending
from
the
stack to join the approach for Heathrow were regularly making
distrails in
it in this vicinity, so definately not higher than 5000ft. I sent a
query
to
the Met O about the missing winds. Not one of the UK ascents had winds
at
midnight, surely not a financial problem, unless the Met O has
forgotten
to
renew some licence or other!

Further to my comments about lack of winds on the UK ascents, I have
received a reply from the Met O saying that there is a Europe-wide
problem
with the sonde GPS system, and Vaisala are investigating.




Maybe there's still a few relic GL3 radar cabins lying around that we
could
bring back to life Bernard :-)


--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.

I'd be willing to give it a try Norman, but in this day and age, I wouldn't
wonder if it were possible to 'knock something up' to do the job using bits
off Maplin's shelves.
--
Bernard Burton
Wokingham, Berkshire, UK.

"ronaldbutton" wrote in message
...
Strange looking clouds over west Essex now ,look like mountain cloud but
that is quite rare in Essex !

RonB


Look at the two 'wave cloud' entries on this page Ron
http://tinyurl.com/qi3h
Is that what you mean? I noticed they were widespread but relatively short
lived in some eastern areas 'twixt Epping and Edinburgh yesterday (but not
everywhere). Not unusual, promising more than they deliver from a soaring
point of view, producing rather weak smooth lift with the clouds themselves
invariably giving way to clearer cloud free conditions. Not in the same
league as proper mountain wave. I always noticed that they they seemed to be
associated with the breakup of a sheet of stratocumulus.
All the best


--
George in Epping, West Essex (107m asl)
www.eppingweather.co.uk
www.winter1947.co.uk
COL 36055