[OZAPRS] Weather

[Geoff]

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
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