Copied from UKww
Posted 15/4/2010 18:42 (#534277 - in reply to #528543)
Subject: Re: BREAKING NEWS Iceland Volcano Erupts; UK airspace closed
Can i say, for the people saying they cannot see the ash, it is unlikely that we will see it from here with our own eyes as it is at very high altitude and of a low concentration. Even on the maps displayed they only show the "main" plume, but there WILL be ash already in most of our immediate atmosphere overhead in low concentration. The Jet stream travels at about 200mph, which means even yesterday daytime there would have been ash present over most of the UK.
The reason they have shut airspace is that even at very low concentrations, ash "could" cause engines to stall. Perhaps over-cautious, but if your loved one was on a flight that crashed because of the ash.... you'd be the first to ask "why didn't they ground the flights?"
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