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PASSING THUNDERSTORM 0003

 

Date: 04-06-1999
Time: 22:40 BST
Location:
Macclesfield, Cheshire UK
Type: Convectional Multicell
Documented by: Mark Seltzer
Equipment: Samsung VP-H65 Video Camera
Footage Quality:
VHS

Storm Statistics: PS0003.doc
Event Timeline: PS0003events.xls

I saw this group of fast developing cells developing on the horizon in a line in a classic unstable air mass behind a set of fronts, and decided to set the camera to time-lapse mode and watch them grow. They all shot up quickly to form anvils and started to merge with each other into a long convergence line about 40-50 miles away NW of Macclesfield over the west coast of Lancashire (Southport/Blackpool).

One of the cells, now disappearing behind a set of trees, became electrically active as I spotted a flash of lightning. At this point I started filming normally and zoomed right up to the cells. A cell behind the initial cell also became active and it continued to flash faintly. The development was mostly at the front of the cells with the anvil sloping backwards in the low vertical wind-shear conditions. I caught one good discharge that lit up the front part of a developing cell.

DUNDEE SATELLITE IMAGES (CREDITS)
COLOUR 04.06.1999 17:23 + GRID

COLOUR 04.06.1999 17:23
INFRARED 04.06.1999 17:23 + GRID
INFRARED 04.06.1999 17:23
VISIBLE 04.06.1999 17:23 + GRID
VISIBLE 04.06.1999 17:23

 


RAVENSTORM CREDITS