NWS Severe Weather Watch/Warning Boxes

  • Moderator

    Feature Request: Would you add a feature to display any NWS severe weather watches and warnings over the US.? I frequently use the CAPE.feature but that only displays the areas threatened by severe weather in general. Severe weather watch/warning boxes would be a nice addition. It would display areas where actual severe weather is occurring.

  • Jim whats the URL of source

  • Moderator

    I did some research and found the National Weather Service (NWS) produces severe weather data in ATOM and CAP format as well as a RSS feed. You can find information on https://alerts.weather.gov. It's been awhile since I did any kind of website programming so most of this was over my head. This information would likely be limited to warnings in the USA and not worldwide. There may be some information regarding hurricanes/typhoons and tsunamis. I hope this helps.


  • RSS feed is fine. Please check the source if we can work on these data in machine way without user input. If there is some good format like XML, JSON including coordinates

    This is definetly good idea

    I have to finish some features (1-2months) that will make Windy again a little bit faster.

  • Moderator

    Hi Ivo,

    Sorry for the delay following up on the severe weather alerts suggestion but I am home recuperating from a hospital stay now. Nothing serious only chronic.

    I have been trying to understand what the National Weather Service (NWS) RSS feed means and I don’t understand what information you would need so you can add NWS watches and warnings to Windy. My understanding of what the NWS sends is a coded line in XML format which you can use to post the watch and warning boxes. Then again I don’t know what XML actually looks like, ha ha.

    For example, here is a current Tornado Watch posting:

    NOAA-NWS-ALERTS-MD12584F8E89EC.TornadoWatch.12584F8F8DB0MD.WNSWOU4.ab8b0142eb0fc54c4d7ea9d21aa1fe52 from w-nws.webmaster@noaa.gov

    Is this XML? Is this useful for creating an image on Windy? There usually is a long list of statements, watches and warnings on https://alerts.weather.gov/cap/us.php?x=1 but most of them would not be worthy of displaying on Windy. I would think that Tornado Watches and Warnings, Severe Thunderstorm Watches and Warning and perhaps Flash Flood Warning could be displayed. That would mean you would need to write code to filter out other types of statements listed on the alert web page. There are Flood Warnings, Rip Current Warnings & Special Weather Statements which often contain Marine Weather or High Surf/Coastal Waters Warnings also.

    A typical Severe Weather Map looks like:

    The Legend is:

    What I need to know first is whether the Message above is XML and if not could you give me an example of XML so I can research more for you.

  • Hi Jim

    Your help is much appreciated.

    I have asked @TomSlavkovsky to look at the similar alerts in Europe. Will be good feature.

    Right now we have to set up priorities somehow.

  • Moderator

    Oops, sorry. I forgot to add the link as a lick. The list of current Watches & Warnings is at:

    NWS Watches & Warnings


  • Yep it is in machine readable format and would be easy to read

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