THUNDERSTORM T0028
Date: Monday 16th August 1999
Time:
16:40 (BST)
Location:
Macclesfield, Cheshire UK
Path: Cell ~2 miles north of Macclesfield
Synoptics:
Convectional trough within a Polar Maritime flow
Duration: 30 minutes
Type: Open Cell Multicell
Average lightning type: C-C
Average discharge rate: 409 seconds
Footage Quality: VHS
Today was a typical summer polar maritime day of heavy showers and isolated thunder from
the west. A couple of inactive cells rolled over the Macclesfield area
earlier in the day before this came. It had an irregular anvil and was
developing steadily as it moved in.
The base was fairly dry as it made its approach as heavy downdraughts were
not yet developed. Bizarrely the storm appeared to be hovering as much of
it wasn't connected to the ground with rain curtains.
It
gave a few high-amp C-Cs in it's lifespan before dissipating as it passed
over, giving one last loud C-C. It had a very dark base, emphasized by the
contrast between the daylight running underneath it. Most of the heavier
storm cells were to the south of the country in the afternoon near a wavetip/trough
line.
SATELLITE IMAGES (Credits)
VISIBLE 16.08.1999 16:01
VISIBLE 16.08.1999 16:01 + Grid
INFRARED 16.08.1999 16:01
INFRARED 16.08.1999 16:01 + Grid
VISIBLE 16.08.1999 16:59
VISIBLE 16.08.1999 16:59 + Grid
INFRARED 16.08.1999 16:59
INFRARED 16.08.1999 16:59 + Grid
COLOUR 16.08.1999 16:59
COLOUR 16.08.1999 16:59 + Grid
CHARTS
(Credits)
SFERICS (Credits)
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