THUNDERSTORM T0020
Date: Thursday 29th October 1998   Time: 10:57 BST
Location: Macclesfield, Cheshire UK
Path: Overhead, moving ESE

Synoptics: Polar maritime airmass
Duration: 15 minutes
Type: Convergent/Open Cell Multicell
Average lightning type: C-C
Average discharge rate: n/a (one discharge captured)
Footage Quality: VHS
 

This was a heavy late autumn wintry shower which was weakly electrified thanks to some enhancement by the Cheshire-Gap convergence effect. It wasn’t very energetic and gave a few discharges including an overhead C-C that had a very low-amp thunder, but accompanied with a bass-boom. Small hail, about 4-6mm, also fell during it’s passing - not on par with the hail of T0019, but this showed that it had strong organised updraughts, common in convergent situations where air is fed uniformly and uninterrupted into the storm. After the C-C, it fell silent and dissipated as it cleared the area.

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SATELLITE IMAGES (Credits)
VISIBLE 29.10.1998 13:23
INFRARED 29.10.1998 13:23
VISIBLE 29.10.1998 13:23 + Grid
INFRARED 29.10.1998 13:23 + Grid