On Feb 4, 2025, at 22:47, e m via groups.io <delivers1234@...> wrote:

hi.

i don't get any info in the severe weather zones window.? i think i downloaded all teh files from noaa.? i do see the weather on the map.

Sincerely,
Eugene Mosqueda

Dominus Providebit

On Feb 6, 2025, at 18:12, Andrew P. via groups.io <andrewemt@...> wrote:

Here's a few details on seeing severe weather zones:

1. You will only get severe weather alerts (forecasts) if you have an APRS-IS connection with a geographical radius (r/ or m/) or area (a/) filter large enough to include the relevant areas. These messages have position information in them to affect the filtering by the APRS-IS server, and come from a single Internet server that pushes the data from the National Weather Service onto APRS-IS.

2. The shapefiles for the 3 categories of severe weather zones need to be copied into your configured YAAC map tile directory. Just downloading them isn't enough if you don't unpack the .zip files into the correct directory.

3. You have to have Severe Weather Zones enabled on the View->Layers submenu. Note this won't prevent the zones from appearing in the Severe Weather table.

4. There actually have to _be_ severe weather events for the notifications to go out.

Note that it is possible to see other weather data that looks like severe weather alerts, but isn't. These are APRS Objects describing actual weather (such as thunderstorms, tornadoes, flooding, etc.), not forecasts, which also come from the APRS-IS, and commonly have NWS multilines attached to the Objects to draw polygons around the affected area. Rendering of the multilines is controlled by a different menu choice, View->Layers->NWS Multilines. These Objects do _not_ appear in the Severe Weather table, but will appear in the Stations/Objects List.

Hope this helps.

Andrew, KA2DDO
author of YAAC

________________________________________
From: [email protected] <[email protected]> on behalf of T W via groups.io <kf6kyd@...>
Sent: Wednesday, February 5, 2025 1:28 PM
To: [email protected]
Subject: Re: [yaac-users] severe weather zones

How are you able to weather alerts? I have had no luck finding out how to do that.

On Feb 4, 2025, at 22:47, e m via groups.io <delivers1234@...> wrote:

hi.

i don't get any info in the severe weather zones window. i think i downloaded all teh files from noaa. i do see the weather on the map.


Sincerely,
Eugene Mosqueda

Dominus Providebit