[OZAPRS] NWS Service Source Data

[Geoff]

That is true, but none of the WX station OBSERVATIONS are useful when it
comes to distributing ADVISORY, WARNING and ALERT messages from the
Bureau.

The NWS functionality is much more than simply current observations.  The
NWS will issue for example a Flood Warning for a region, and this warning
is
transmitted via an NWS format APRS beacon.  The NWS application on the
APRS
client then changes sections of the map to a specific colour to indicate
the
areas affected by the warning, and a single object defining the warning is
transmitted.

The dimensions of each warning region are specified in the shapefiles
issued
by the NWS. Each 'zone' has an ID, so for example they say the warning
affects  Florida zones 1, 2, 3, 6, 7 and 8.  The NSW APRS beacon contains
the relevant encoding to change the colour of areas FL1>3, FL6>8 as
required.

There are a few screen captures of this in action here:
http://www.w9gwp.com/APRSNWS.html

What we want to do is to 'port' this functionality to make it work in
Australia.

Geoff  VK2XJG



-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of Matt Howard
Sent: Wednesday, February 20, 2008 12:13 PM
To: ozaprs at aprs.net.au
Subject: [OZAPRS] NWS Service Source Data

Hi
 
there is also the data from CWOP which includes non APRS stations as well
 
Matt
VK3XIL

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