Time: 20:45 BST
Macclesfield, Cheshire UK
Storm Stage: Developing - Mature - Dissipation
Path / Movement: Developed overhead, matured 10-20 miles north /
Compared with T0009, this was an absolute beast. Good and bad news however;
the bad being that it was several miles north where the thunder was
in-audible, the good being it was late-evening / night-time so the lightning
was clearly visible under the cloud-base.
was substantially active considering it was a slow-moving mid-spring
convectional cell. The air-mass was a tropical maritime flow, probably an
old returning polar maritime, but streaming in very slowly giving any
convection time to organise a cloud structure and charge itself. A cluster
of storm cells were moving in at around 20:00 UTC whilst in their
development stages. One of these cells was about 30 miles away East over the
Pennines that showed prominent cell growth at the front leading-edge of the
storm and a solid wedge-shaped anvil.
The developing cells quietly rolled over Macclesfield only giving a light
shower in the form of large raindrops. A few minutes later after it had past
to the north I heard a rumble of thunder. I had a look out of the window to
analyse the horizon and saw a further lightning flash to the north. The base
didnít look very structured nor did it appear to have much in the way of
precipitation curtains, so initially I thought I was filming an inactive
cell that fortunately gave a discharge on the off-chance. That was ruled out
shortly after it started splashing C-G and C-C lightning all over the place.
After a further two flashes I zoomed the camera right in to where I the
lightning hotspot was so I wouldnít miss the detail.
it was a slow-mover this storm was seen from Macclesfield to produce a rough
total of 33 discharges as the storm matured spectacularly over parts of
Stockport and southern Manchester. Thirty of these discharges were recorded
on camera. Most of these discharges were visible C-G or C-Cs, sometimes
accompanying each other. The discharges rates were somewhat uneven though,
some quiet periods and some active periods. There were three distinct
silences, as seen in the event guide, in this stormís activity before the
lightning fired up again. This suggests the storm was a multicell with
slow-rising or sporadic updraught pulses that gave bursts of energy to the
parent cell, rather than a continuous updraught-front producing roughly the
same lightning in the same place throughout the lifespan of the storm.
Although this storm was
miles away on the horizon, it provided a good vision of what a sturdy
thunderstorm looks like in action from a distance. It was quite eerie.
VISIBLE 28.04.1998 17:07
INFRARED 28.04.1998 17:07
COLOUR 28.04.1998 17:07