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What is this synoptic symbol?

swebby

Asked by swebby,

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swebby Veteran

swebby

Posted
  • Location: Exeter, Devon, UK. alt 10m asl
  • Location: Exeter, Devon, UK. alt 10m asl
Posted

Evening Everyone,

The thunderstorms over the low countries today have been showing on the met office synoptic charts with a symbol i've never seen before - what does it signify please?

it is a trough line bisected with an open cold front arrow - basically " ----V-----"  It's not a convergence line or front axis.

Can be seen on both the 6 and 12 z charts from today.

 

Many thanks

 

ppva_12z_last.gif

ppva_06z_last.gif

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johnholmes Maestro

johnholmes

Posted
  • Location: just south of Doncaster, Sth Yorks
  • Location: just south of Doncaster, Sth Yorks
Posted

If you mean the solid line with two arrows on it ahead of the cold front then it represents a trough as far as I know

 

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The PIT Maestro

The PIT

Posted
  • Location: Sheffield South Yorkshire 160M Powering the Sheffield Shield
  • Weather Preferences: Any Extreme
  • Location: Sheffield South Yorkshire 160M Powering the Sheffield Shield
Posted

Never seen that symbol before. Could it just be a badly drawn decaying front?

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Metwatch Maestro

Metwatch

Posted
  • Location: Coventry, 96m asl
  • Weather Preferences: Snow in winter, thunderstorms, warmth, sun any time!
  • Location: Coventry, 96m asl
Posted
On 24/08/2023 at 20:43, swebby said:

Evening Everyone,

The thunderstorms over the low countries today have been showing on the met office synoptic charts with a symbol i've never seen before - what does it signify please?

it is a trough line bisected with an open cold front arrow - basically " ----V-----"  It's not a convergence line or front axis.

Can be seen on both the 6 and 12 z charts from today.

 

Many thanks

 

ppva_12z_last.gif

ppva_06z_last.gif

A met just told me it's a squall line.

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