2003 - PART 5:
FRONTAL CLEARANCE (NOV 20) AND DRIZZLE!
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middle of November 2003 saw some long-awaited rainfall
over the southern UK via that most tedious of
weather-systems, the long trailing front. Such fronts can
stretch for hundreds of miles out into the Atlantic and
little waves run eastwards along them towards us, which
makes the front (plus cloud/rain) appear to move north,
then back south, then back north and so on. This can go
on for days which makes sunshine something of a
commodity. On the afternoon of November 20th I walked the
beach from Tywyn to Aberdyfi as the front finally moved
away south for the last time.
The rain has moved off inland leaving high
Some interesting patterns appeared in the
cirrus-deck as the afternoon wore on...
...until the sun tried to break through. At the
same time a jet-trail became visible, running
straight across the sun, while strange
chevron-stripes appeared in the cirrus. Although
it was getting darker, the reason the periphery
of this pic is so dark is because the camera
compensated for the bright sunshine, creating a
very dramatic effect.
Drizzle is defined as fairly uniform
precipitation composed exclusively of fine drops
with diameters less than 0.02" (0.5 mm)
which are very close together. Drizzle appears to
float while following air currents, although
unlike fog droplets, it falls to the ground. It
is associated with low blankets of cloud
(stratus) and foggy conditions: in fact, the
intensity of drizzle is based solely on
In late November, on a very claggy and drizzly
day, I took the back-roads from Aberystwyth
towards Bontgoch, to see if it was possible to
capture the feeling of such weather. A tricky
business helped here by some wildlife...
...and here by a few disillusioned sheep. The one
in the background was visibly shivering! You can
just make out the hillside beyond, through the
clag! I came to the conclusion that drizzle is a
very tricky subject indeed!
This isn't really a weatherpic but I thought I'd
include it: late November at low tide on the Dyfi
Estuary. The sands are constantly shifting, moved
seaward by periodic autumn/winter floods and back
the other way by incoming tidal flow.
The same spot
in late December! Another attempt at drizzle
photography!! Think I'll stick to storms....
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