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THUNDERSTORM 0006
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Date: 20-05-1997
Time: 20:00 BST I saw some storm cells developing at around 16:00 which appeared to be dissipating and moving NNW. The wind was very slight and easterly as a low was hovering to the south of the country feeding in heavy showers behind it's occluded front. At first I noticed some odd-looking cumulonimbus structures that hadn't quite developed fully to the north. There were no other cells in the vicinity so I left it without paying more attention to the developing weather. Half an hour later there all of a sudden there was a rumble of thunder and as I looked out there was a dark brown cloud base to the north which it must have originated from. I set the camera up and started to film the storm which was positioned about 5 miles north and moving sort of west to south-westerly. At the storm's closest point the lightning wasn’t clearly visible due to the intense rain curtains and landscape around, but the cloud formations were quite dramatic and small areas of shooting updrafts were visible that looked like funnels (but obviously weren't). This cell started to dissipate however but as it left the area another cell had developed closer to the Macclesfield area (cell 2) which gave a few C-Gs.
Unfortunately the video camera malfunctioned during filming of the second cell and the (already quite bad) video quality of the storm was degraded somewhat. However I still kept the footage. The trophy of the footage from this storm was a double-C-G discharge in the distance, unfortunately occurring at the same time as when the tracking went dodgy on the recording! As the storm was leaving it gave a final yelp as there occurred what I thought was a P-F (positive flash). This judging on the bright flash, a long delay between that and the thunder, and when the thunder came it was quite explosive.
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