The odd heatwave came and went in June with
occasional mouthwatering convective instability
charts, which were contradicted by upper air
charts indicating descent rather than ascent!
Here, very high-based convection, producing
virga, is just discernable through the heat-haze!
The same period saw a lot of very high-up
cumulus, seen here late one afternoon over
One causative factor for the highly unsettled
summer weather has been the
farther-south-than-usual position of jetstreaks -
very fast high-level winds that are a major
driving factor in the weather systems lower down
in the troposphere. Here it's racing along above
the Mid-Wales coast between Aberdyfi and Tywyn,
with bands of cirrus clouds composed of
July 1st finally saw a bit of convective activity
in my neck of the woods although this turned out
to be fairly "messy". I headed from the
Mach-Llanidloes mountain road southwards to near
Rhyader but nothing much came of it....
.......but a wonderful mixture of high clouds
gave me something to point the camera at instead!
Taken near Tylwch on a side-road off the
cirrus clouds radiate out from a point above the
remnants of the convection, taken looking back
south again from above Dylife....
...and again in portrait format....
same afternoon looking N towards Machynlleth.
Blue sky, blue sky and more blue sky! Where are
Finally a bit of an abstract one of high cirrus
and an old jet-trail! Can't remember when this
was taken except it was over Machynlleth,
sometime in June 2004!!
Part 2 deals with some "proper"
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