London VOLMET south
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London VOLMET south
Its been bugging me for ages
Why oh why.....
Does NORWICH precede the WX with the word 'Corrected' Surely they cant always be correcting the previous erroneous transmission?
Why oh why.....
Does NORWICH precede the WX with the word 'Corrected' Surely they cant always be correcting the previous erroneous transmission?
Yes I notice that this happens with other airports such as Manchester too. Whilst they are about it they can get rid of the wind variability especially with low wind speeds! Are we really that interested in the variability of the wind when it's only 10 or even 15 kts. Funny how the range often seems to be the average direction?
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Are we really that interested in the variability of the wind when it's only 10 or even 15 kts
PP
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I can't be sure but I think you'll find that the problem is something connected with the automatic equipment that compiles and sends the first METAR. Then a human checks it and will send a correction if necessary. I guess the automatics stuff that generates the VOLMET is not geared up to ignore such situations - but then it would be difficult to set parameters where the original observation should effectively be ignored.
The wind variations - along with all of the other elements - should be reported in accordance with Annex 3 specifications.
The wind variations - along with all of the other elements - should be reported in accordance with Annex 3 specifications.
I was told that the reason is somewhat similar to what Spitoon has said except that it is more specifically to do with the addition of the trend. i.e. the observation is made for the actual weather and then someone else comes along and adds the trend, even if it is 'NOSIG', thereby 'correcting' the original report (even if it hasn't been released yet).
Another one I've heard is that the automatic wind recording doesn't work properly so that has to be done 'manually' and again the METAR is 'corrected' before it is released.
Obviously either of these could be complete tosh
Another one I've heard is that the automatic wind recording doesn't work properly so that has to be done 'manually' and again the METAR is 'corrected' before it is released.
Obviously either of these could be complete tosh
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And while we are talking about it, why oh why do Manchester feel putting the forecast on the ATIS is a good idea? It means you have to wait twice as long to get the relevant airfield data, usually during high workload times pre departure and in the descent.
PP
PP
Why aren't all VOLMET's and ATIS's standardized?
RVR's are useful on ATIS but not often given, but are a waste of time on VOLMET. (CDG giving RVR for all 8 ILS approaches).
But then we don't have the big picture.
RVR's are useful on ATIS but not often given, but are a waste of time on VOLMET. (CDG giving RVR for all 8 ILS approaches).
But then we don't have the big picture.
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And while we are talking about it, why oh why do Manchester feel putting the forecast on the ATIS is a good idea? It means you have to wait twice as long to get the relevant airfield data, usually during high workload times pre departure and in the descent.
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Just a thought! I dont listen to Volmet, but request the information from London Information. You speak to a human being, it is faster as the person just dials in the requested ICAO indicator to the met computer and any clarification can be answered immediately. It takes about 30 seconds to request and copy three METARs and that includes European and American actuals.
Or perhaps the question we should be asking is why use such an antiquated system as VOLMET broadcast in the first place? Particularly in the busy ATC environments which we know operate I would suggest that all in flight weather should be data link - you can even get aviation weather on your mobile phone!
A long time ago I started using ATIS whilst enroute to copy weather whenever possible to minimise time off ATC rather than using VOLMET broadcast. Sods law says that you have just missed the aerodrome you want so you have to wait whilst the roundabout goes all the way round before copying the one you want.
A long time ago I started using ATIS whilst enroute to copy weather whenever possible to minimise time off ATC rather than using VOLMET broadcast. Sods law says that you have just missed the aerodrome you want so you have to wait whilst the roundabout goes all the way round before copying the one you want.
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Originally Posted by mbcxharm
I was told that the reason is somewhat similar to what Spitoon has said except that it is more specifically to do with the addition of the trend. i.e. the observation is made for the actual weather and then someone else comes along and adds the trend, even if it is 'NOSIG', thereby 'correcting' the original report (even if it hasn't been released yet).
