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Old 18th May 2010, 07:34
  #2892 (permalink)  
brooksjg
 
Join Date: Jun 2008
Location: UK
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VA Forecast accuracy

As it happened, I was paying closer attention to the Met Office Red/Black composite graphics yesterday and was surprised to see the supposed Ash Cloud with a large Black area extending southward nearly to LGW on the 0600 forecast suddenly retreat at the speed of light!! The new southern boundary then went only as far south as Central Scotland. I guess I should have only relied on the less-detailed the official VA advisories - these did NOT show any such sudden change!

Explanations for this came there none - how people who rely on this stuff for flight planning are supposed to make good decisions beats me!.

Just pre-announcement of yet another category of ash cloud flyable under yet more conditions, risk-assessments, etc.

Then, BBC Newsnight covered the topic of VA. Aha! I thought - now the UK public will get some clarity. Wrong. All we got was Susan Watts delivering a deeply-flawed piece (with an incorrectly labelled diagram of an engine) about the effects of VA.

Last edited by brooksjg; 18th May 2010 at 07:50.
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