There's some odd-looking cirrus formation to the west of Scotland on the
following loop (the URL will probably wrap to the next line)

http://wind.met.fu-berlin.de/cgi-bin...8&count=16&int
ervall=30&refresh=10&playmode=Endlos

It looks too regular to be natural but I'm sure it is natural.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England

On 1 Sep, 14:26, Norman Lynagh normanthis...@thisbitweather-
consultancy.com wrote:
There's some odd-looking cirrus formation to the west of Scotland on the
following loop (the URL will probably wrap to the next line)

http://wind.met.fu-berlin.de/cgi-bin...8&count=16&int
ervall=30&refresh=10&playmode=Endlos

It looks too regular to be natural but I'm sure it is natural.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England

Very strange formation at the start of the loop (0630UTC) it does look
rather unnatural. Interesting.

Ian

On Sep 1, 2:26 pm, Norman Lynagh normanthis...@thisbitweather-
consultancy.com wrote:
There's some odd-looking cirrus formation to the west of Scotland on the
following loop (the URL will probably wrap to the next line)

http://wind.met.fu-berlin.de/cgi-bin...8&count=16&int
ervall=30&refresh=10&playmode=Endlos

It looks too regular to be natural but I'm sure it is natural.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England

I'm sure it's natural because of the way it blends with the
cloud to the north but I have no idea what the cause is.
There are some interesting developments over Bulgaria and
Romania with what looks like vigorous thunderstorms, some of them
turning into mesoscale systems.

Tudor Hughes, Warlingham, NE Surrey, 556 ft.

In message . com, Tudor
Hughes writes
On Sep 1, 2:26 pm, Norman Lynagh normanthis...@thisbitweather-
consultancy.com wrote:
There's some odd-looking cirrus formation to the west of Scotland on the
following loop (the URL will probably wrap to the next line)

http://wind.met.fu-berlin.de/cgi-bin...8&count=16&int
ervall=30&refresh=10&playmode=Endlos

It looks too regular to be natural but I'm sure it is natural.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England

I'm sure it's natural because of the way it blends with the
cloud to the north but I have no idea what the cause is.
There are some interesting developments over Bulgaria and
Romania with what looks like vigorous thunderstorms, some of them
turning into mesoscale systems.

Tudor Hughes, Warlingham, NE Surrey, 556 ft.


I've had a look at some higher resolution imagery and it seems that the
formations grew out of contrails.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England

Norman and others,
The cloud formation is entirely man made, and consists of 'bundles'
ofcontrails in a fairly strong anticyclonic shear. Playing an IR animation
shows individual trails forming as the older ones rotate anticyclonically.
The first trails appeared near 04z as the overnight pond hoppers headed for
Europe. A nice visual example of vorticity.

--
Bernard Burton
Wokingham, Berkshire, UK.

Satellite images at:
www.woksat.info/wwp.html
or
www.btinternet.com/~wokingham.weather/wwp.html
"Norman Lynagh" wrote in
message news
There's some odd-looking cirrus formation to the west of Scotland on the
following loop (the URL will probably wrap to the next line)

http://wind.met.fu-berlin.de/cgi-bin...8&count=16&int
ervall=30&refresh=10&playmode=Endlos

It looks too regular to be natural but I'm sure it is natural.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England

In message , Bernard Burton
writes
Norman and others,
The cloud formation is entirely man made, and consists of 'bundles'
ofcontrails in a fairly strong anticyclonic shear. Playing an IR animation
shows individual trails forming as the older ones rotate anticyclonically.
The first trails appeared near 04z as the overnight pond hoppers headed for
Europe. A nice visual example of vorticity.

--
Bernard Burton
Wokingham, Berkshire, UK.




Bernard,

Yes, as you can see from another post I had reached the same conclusion
that the formation originated as contrails. I suppose each "bundle" is a
visual indication of an individual trans-atlantic track being used this
morning. As you say, a nice visual example of vorticity. It's certainly
something I've never seen before.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England