Severe Weather Growler is a weather alert monitoring service for Growl. This application runs on Windows (x32 and x64), but it should be able to send growl notifications to any Growl server. You will have to have the .net runtime (4.0 client) installed on your computer.
This is a pretty easy program to use. And it’s 100% free. Heck, I’ll even give you the source code if you want it. Just install it, run it, select the county (see http://alerts.weather.gov for county codes) that you want to receive alerts for, and you should be good to go. This program polls the National Weather Service every 90 seconds to see if any new alerts have been posted. If so, you will be notified. Note that each alert type at the NWS is a different notification type within Growl. Therefore, you can set the type of notification for each type of alert.
Known bugs with the version 1.3.0: None so far
v 1.3.0 Fixed a “bug” (“bug” in quotes because the problem was really with the NWS feed. No, really.) where certain warnings would not be notified due to the expiration date/time being wrong. As a result of this change, there will no longer be notifications when an alert expires. I also added the date & time to the notification title. (24 July 2011)
v 1.2.0 Fixed a bug where the number of current alerts on the main form was not updating automatically. Added a feature to enable automatic update checking for the application. (29 June 2011)
v 1.1.1 Fixed bug where an exception is thrown if the network connection is down, or if the server is unreachable. Added an option to enable/disable growling of such server errors. (27 June 2011)
v 1.1.0 Corrected many, many bugs and several UI improvements. This should be very close to a final release. (24 June 2011)
v 1.0.3 Added the capability to use multiple county codes, cleaned up the minimize to tray code, added right-click context menus, and made the nws url clickable. (16 June 2011)
v 1.0.2 fixed some bugs with file read errors (16 June 2011)