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    Description of weather overlays

    Frequently Asked Questions
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    • idefix37I
      idefix37 Sailor Moderator @edneff
      last edited by idefix37

      @edneff
      These lines correspond to altitude levels. They allow to know the altitude of the clouds shown on the Meteogram.

      0_1544470068774_A7488F1C-2A99-4CA1-ADCB-5D465CB52268.jpeg

      • 700h means 700hPa. This altitude is expressed as atmospheric pressure level.

      • 3km is the altitude in metric

      • FL100 is used by aviation as flight level. FL100 correspond to 10000ft level.

      1 Reply Last reply Reply Quote 2
      • sm5569S
        sm5569 @idefix37
        last edited by

        @idefix37 said in Description of weather overlays:

        @tz
        Hi,
        Today there is no similar strange track. I have checked one or two tracks in the North Atlantic. They seem to correspond correctly to the max. gusts predicted in the same area once during the 10 days.
        A suggestion: sometime the track is due to a strong wind at day 8 or 9. For people it will be difficult to understand why they see this storm track if the strong winds are forecasted at near the end of the 10 days.
        So, instead to show the wind speed in the picker, may be it would be better to show the date when the max. gust is expected ?

        1 Reply Last reply Reply Quote 1
        • S
          shrawan0825 @ivo
          last edited by

          @ivo I am new user of your application . I want to know how to use this application and how to understand the sign. Because I am non technical person.
          And also I want to tell you that radar function is not working india

          Gkikas LGPZG 1 Reply Last reply Reply Quote 1
          • Gkikas LGPZG
            Gkikas LGPZ Moderator @shrawan0825
            last edited by

            @shrawan0825
            Please read
            https://community.windy.com/topic/3361/description-of-weather-overlays

            1 Reply Last reply Reply Quote 0
            • E
              ekdyer
              last edited by

              The ECMWF CAPE and thunderstorm layers are very different - e.g. massively high CAPE over parts of the UK but not much in the rain/thunder or thunderstorms layers. Does anyone know why these are so different? What goes into the the thunderstorm layer?

              Thanks

              Gkikas LGPZG 1 Reply Last reply Reply Quote 0
              • Gkikas LGPZG
                Gkikas LGPZ Moderator @ekdyer
                last edited by Gkikas LGPZ

                @ekdyer
                CAPE is a measure of instability.
                However, instablility on it's own is not enough to ensure thunderstorms.
                There needs to be a lifting factor due to orography or frontal activity.
                Check for other hints such as high humidity and a forecast of showers in the area.
                https://openskiron.org/en/understanding-thunderstorm-indicators

                For further reading: http://www.estofex.org/guide/

                For ECMWF lightning forecast ... https://community.windy.com/topic/8612/what-parameter-is-chosen-for-lightning-forecast/2

                1 Reply Last reply Reply Quote 0
                • A
                  ambnmwm
                  last edited by

                  The rain accumulation..that's in inches correct??Not feet* I'm in Louisiana following Barry

                  idefix37I 1 Reply Last reply Reply Quote 0
                  • idefix37I
                    idefix37 Sailor Moderator @ambnmwm
                    last edited by idefix37

                    @ambnmwm
                    Yes Rain accumulation is in inches, even if you read 3ft on right hand of the scale.

                    1 Reply Last reply Reply Quote 0
                    • A
                      alip @ivo
                      last edited by

                      @ivo what are the meanings and descriptions of meteorological icons used ın meteograms for example which icon is "PARTLY CLOUDY" and the other icons?

                      Gkikas LGPZG 1 Reply Last reply Reply Quote 0
                      • Gkikas LGPZG
                        Gkikas LGPZ Moderator @alip
                        last edited by

                        @alip
                        f529770f-2ff3-4e37-b3d5-49463cb170de-εικόνα.png

                        A 1 Reply Last reply Reply Quote 0
                        • A
                          alip
                          last edited by

                          Thank you very much:)

                          1 Reply Last reply Reply Quote 1
                          • A
                            alip @Gkikas LGPZ
                            last edited by

                            @Gkikas-LGPZ thank you:) in addition what are the percantage of clouds in partly clouds and mostly clouds and In Turkey we use "less cloudy"icon in forecast this less cloudy icon is includes in windy pages because ı did not see less cloudy icon

                            Gkikas LGPZG 1 Reply Last reply Reply Quote 0
                            • Gkikas LGPZG
                              Gkikas LGPZ Moderator @alip
                              last edited by

                              @alip
                              I supose partly cloudy is up to 50% (1~4/8).
                              For more details you can use the picker.
                              593c8465-6f2a-4043-a5eb-ea5dbb1a4906-εικόνα.png

                              A 1 Reply Last reply Reply Quote 1
                              • A
                                alip @Gkikas LGPZ
                                last edited by

                                @Gkikas-LGPZ thank i have one more question whick kind of icons are heavy light showers or heavy thundery or light rain for example in Turkey there are light rain and light showery icons in forecasts

                                Gkikas LGPZG 1 Reply Last reply Reply Quote 1
                                • Gkikas LGPZG
                                  Gkikas LGPZ Moderator @alip
                                  last edited by

                                  @alip
                                  f443baeb-68d2-4152-ad5c-f39b619a1d5e-εικόνα.png

                                  A 1 Reply Last reply Reply Quote 2
                                  • A
                                    alip @Gkikas LGPZ
                                    last edited by

                                    @Gkikas-LGPZ thank you very much in addiction is there any formula for calculating wind gust from avarage wind speed and which formula iş used in calculating wind gusts

                                    Gkikas LGPZG 1 Reply Last reply Reply Quote 0
                                    • Gkikas LGPZG
                                      Gkikas LGPZ Moderator @alip
                                      last edited by

                                      @alip
                                      https://community.windy.com/topic/6526/how-to-forecast-gust-wind

                                      A 2 Replies Last reply Reply Quote 0
                                      • A
                                        alip @Gkikas LGPZ
                                        last edited by

                                        @Gkikas-LGPZ thank you:)

                                        1 Reply Last reply Reply Quote 0
                                        • A
                                          alip @Gkikas LGPZ
                                          last edited by

                                          @Gkikas-LGPZ in addition which model is the best for calculating wind speed gusts avarage wind speed and precipitation amounts used in our site what are your model explanations

                                          Gkikas LGPZG 1 Reply Last reply Reply Quote 0
                                          • Gkikas LGPZG
                                            Gkikas LGPZ Moderator @alip
                                            last edited by

                                            @alip
                                            https://community.windy.com/topic/7791/which-forecast-model-is-the-best

                                            A 2 Replies Last reply Reply Quote 0
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