[OZAPRS] Weather

David and Justine Olsen davejust at bigpond.net.au
Sat Jan 23 14:56:19 EST 2010


It sounds as though you need to copy that exact email to BOM

David


On 23 Jan 2010, at 13:53, Geoff wrote:

> Unfortunately it has EVERYTHING to do with the way BoM issue their  
> warnings.
>
>
>
> If you take a look at the warning in question, it is a “Coastal  
> Waters Wind Warning for NSW waters south of Crowdy Head”
>
> Within that warning there are three Gale warnings and a Strong Wind  
> Warning.  No matter what we have done with the scripts that parse  
> the text so far, we have never been able to reliably pull out the  
> individual warnings accurately, given that it is entirely free-text  
> format.
>
>
>
> If BoM did things “properly” there would be four separate warnings:
>
> -          Gale Warning For the South Coast, Illawarra Coast From  
> Gabo Island to Port Hacking
>
> -          Gale Warning For the Hunter Coast, Sydney Coast, From  
> Port Hacking to Broken Bay
>
> -          Gale Warning For Sydney Closed Waters Port Jackson,  
> Botany Bay and Pittwater
>
> -          Strong Wind Warning For the Mid North Coast Seal Rocks  
> to Crowdy Head
>
>
>
> If BoM decide to implement the nice XML formatting of warnings  
> nationally that they have been trialling very secretively in VK3  
> (we only found them by mistake the other day) then we would be able  
> to EASILY break a warning into the correct parts – even specifying  
> the exact shapefile segments to light up – but I doubt that will  
> happen for a L-O-N-G time….  L
>
>
>
> The way the scripts work at present is to assign the HIGHEST level  
> to all the affected areas, which is why you are seeing the Gale  
> warning.
>
>
>
> Regards,
>
> Geoff
>
>
>
>
>
> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs- 
> bounces at aprs.net.au] On Behalf Of Scott Evans
> Sent: Saturday, January 23, 2010 12:02 PM
> To: Australian APRS Users
> Subject: Re: [OZAPRS] Weather
>
>
>
> I think it has a lot to do with how the BoM format their warnings  
> and the perl script picking out the relevant bits etc...
>
>
>
> On Sat, 2010-01-23 at 11:09 +1100, Ray Wells wrote:
>
>
> Hi All,
>
> I guess this is aimed at Geoff more than anyone else and, it's not a
> complaint.
>
> I use xastir and I get maritime weather warnings that do not agree  
> with
> BoM warnings.
>
> Earlier this morning I had a wind warning (but no icon). This later
> change to displaying the MNC_GLE icon. There is currently only a  
> strong
> wind warning for mid north coastal waters and not a gale warning. The
> nearest gale warning are for the Illawarra and further south.
>
> My question for Geoff is, is this due to shortcomings in the way  
> the BoM
> issue warnings?
>
> I've just checked the xastir display at the radio station and it is  
> also
> displaying a gale warning, which tends to rule out a particular
> installation having an issue.
>
> Ray vk2tv
>
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>
>
>
> --
> Scott Evans VK7HSE
> Phone: +61362291658
> Mobile: +61417586157
> Skype: vk7hse
> scott at vk7hse.hobby-site.org
> http://www.vk7hse.hobby-site.org
> PGP/GPG Key ID 437E00F9
> <image001.png>
>
>
>
> <image001.png>
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