Weird Clouds Cause a Stir in Anacortes, Ferndale
Washington, USA - January 28, 2019
A rare cloud formations seen over Anacortes and Ferndale caused a stir Monday afternoon. At least two punch-hole clouds appeared and made an eerie site.
The weird formation usually happens when a plane either ascends or descends through a super-cold altocumulus cloud.
According to Weather.com studies have shown...
...that aircraft passing through these cloud layers can trigger the formation of the heavier ice crystals, which fall to Earth and then leave the circular void in the blanket of clouds.
[Researchers]
concluded
that
aircraft
propellers
and
wings
cause
the
formation
of
those
initial
ice
crystals.
There
are
zones
of
locally
low
pressure
along
the
wing
and
propeller
tips
which
allow
the
air
to
expand
and
cool
well below the original temperature of the cloud layer, forming ice crystals.
People often mistake the clouds for UFO's.
Brandon
Blake
sent
in
several
photos.
He
said
the
clouds
disappeared
pretty
quickly.
Then
said,
"But
thank
you
for
the
info.
I
can
ease
my
bosses
fears
of
an
alien
mother
ship.
Or
not.
I
think
I'll
just
let
him
keep
thinking
that.
Source: A punch-hole cloud photographed near Anacortes, Washington (Photo: Robert Bruckner) Story: KOMO News Staff
Weird Clouds Cause a Stir in Anacortes, Ferndale
Washington, USA - January 28, 2019
A rare cloud formations seen over Anacortes and Ferndale caused a stir Monday afternoon. At least two punch-hole clouds appeared and made an eerie site.
The weird formation usually happens when a plane either ascends or descends through a super-cold altocumulus cloud.
According to Weather.com studies have shown...
...that aircraft passing through these cloud layers can trigger the formation of the heavier ice crystals, which fall to Earth and then leave the circular void in the blanket of clouds.
[Researchers]
concluded
that
aircraft
propellers
and
wings
cause
the
formation
of
those
initial
ice
crystals.
There
are
zones
of
locally
low
pressure
along
the
wing
and
propeller
tips
which
allow
the
air
to
expand
and
cool
well below the original temperature of the cloud layer, forming ice crystals.
People often mistake the clouds for UFO's.
Brandon
Blake
sent
in
several
photos.
He
said
the
clouds
disappeared
pretty
quickly.
Then
said,
"But
thank
you
for
the
info.
I
can
ease
my
bosses
fears
of
an
alien
mother
ship.
Or
not.
I
think
I'll
just
let
him
keep
thinking
that.
Source: