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    Posts

    Recent Best Controversial
    • RE: Moon Rise / Set Illumination

      @nismo357 Are you looking for something like that?
      17b0860f-0b19-4cfe-b22b-27670741dc59-image.png
      In this chart you can see the night illumination corresponding to the moon phase and elevation for clear and overcast sky.

      posted in Your Feedback and Suggestions
      W
      wetterheidi
    • RE: Cloud cover shading in radiosondes

      As far as I know, the shading is derived from the relative humidity.
      Over 85% BKN
      Between 65% and 85% FEW to SCT
      Under 65% no clouds
      So the shadings in your examples seem to be buggy as the soundings are quite dry.

      posted in Bug Reports
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      wetterheidi
    • meteograms underreport convective activity like thunderstorms

      I observe a critical issue with Windy meteograms for quite a while now, and I’ve been watching this for at least 2 years:
      In unstable conditions Windy meteograms repeatedly underreport convective clouds.
      Frequently the meteogram shows fair conditions, while in fact there are widespread showery rain and thunderstorms.
      I believe the underreporting is due to the fact that convective clouds are not part of the direct model output.
      This is a safety issue.
      Fortunately this issue could be fixed easily all required input data for deriving a more realistic convective cloud forecast should be readily available.

      Here is a detailed example using the weather situation of the 16.05.2024:
      This is the Windy ICON-D2 meteogram of Oberpfaffenhofen (EDMO), 00 Z run

      Bild1.png

      As you can see, there is no precipitation forecasted.
      This is what happened in the afternoon:

      Bild2.png

      The meteogram does not give any hint regarding unstable atmospheric conditions.
      It would be straightforward to implement this in the meteograms by using a simple algorithm using TCON, CCL (already available in the aerology – measured and forecasted soundings) and the bouyancy level BL (which can easily be calculated from the sounding data).
      I suggest a visual display in the meteogram as vertical bars, which could look like so:

      Bild3.png

      The vertical bars should extend from CCL to BL for the time period in which TCON is reached or exceeded.

      The values derived in the abovementioned algorithm would also enable classification of the weather phenomenon, like light/heavy shower, thunderstorm, hail - even hail size.

      If you are interested in implementing this improvement, I'd be happy to provide guidance.

      posted in Your Feedback and Suggestions
      W
      wetterheidi
    • RE: Windy V40 - What's New

      Is there a possibility to get back the pictograms for the selection of the parameters? The small images are not helpful in my opinion.

      I also miss the "submenus". For me it was very comfortable to select e.g. "Clouds" and instantly find the submenu with "Low Clouds", "Medium Clouds" and "High Clouds" (same for wind and gusts).

      posted in Announcements
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      wetterheidi
    • RE: We are sorry, but windy-plugins are no longer mainatainable

      Dear Windy team,
      I'm a meteorologist, forecaster and balloon pilot.
      I work a lot with windy-trajectory for long distance balloon flights and tactical parachuting activities.
      We also use the trajectory for the purpose of planning the Gordon Bennett race, i.e. the gas balloon world championship.
      There is no comparable tool available even on the professional forecast software systems (like NinJo).
      It would be a mess for me, if the trajectories wouldn't work anymore.
      So please transfer at least that plug-in to the frontend.

      posted in Windy Plugins
      W
      wetterheidi
    • Missing SYNOP stations

      Since a few weeks I'm missing the SYNOP data of several German SYNOP stations.
      For example: 10961 Zugspitze, 10962 Hohenpeissenberg, 10982 Chieming and a lot more.
      Is this a bug or a feature? ;-)

      posted in Your Feedback and Suggestions
      W
      wetterheidi
    • RE: windy-plugin-radiosonde

      Best plugin to display radiosoundings.
      I use it in my job as a flight weather forecaster as well as for my hobby as a balloon pilot.

      posted in Developers
      W
      wetterheidi