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    How to know if it will hail

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    • idefix37
      idefix37 Sailor Moderator @petra.pik last edited by idefix37

      @petra-pik
      Sorry Petra, but ice pellets are different from hail.
      Hail is produced during thunderstorms in hot season, whereas ice pellets are observed in colder seasons, sometime during convective snow precipitation.
      http://www.anti-grele.fr/en/anatomy/

      At the moment in north hemisphere, you do NOT see ice pellets in the Precipitation types layer in the areas where there are heavy thunderstorms and hail. Ice pellets are only seen this week in cold zones, in high latitudes (65°N and more) or in Tibet, where there are cold precipitations like snow, freezing rain…

      petra.pik 1 Reply Last reply Reply Quote 2
      • M
        melanie75 @Kebab5 last edited by

        @kebab5 said in How to know if it will hail:

        Hi @wordle game

        I'm not an expert so for me it is difficult to interpret all the values I see in the app but I'm specifically interested in knowing the probability of hail. I've read that some numbers may mean severe storms including hail but I couldn't really understand how to read the data in the app. I think it would be nice to have a map that shows hail forecast but I'm not sure if this is scientifically possible. Any help would be greatly appreciated.

        I also wonder if hail can damage farmers. So what can they do to prevent this?

        Gkikas LGPZ M 2 Replies Last reply Reply Quote 0
        • petra.pik
          petra.pik @idefix37 last edited by

          @idefix37 thank you for the explanation :)

          Petra

          1 Reply Last reply Reply Quote 1
          • Gkikas LGPZ
            Gkikas LGPZ Moderator @Kebab5 last edited by

            @kebab5
            If in USA, then https://mrms.nssl.noaa.gov/qvs/product_viewer/
            In general you may expect hail if in radar you see echoes with dBZ more than 50

            1 Reply Last reply Reply Quote 2
            • Gkikas LGPZ
              Gkikas LGPZ Moderator @melanie75 last edited by

              @melanie75
              In Greece, and in some other countries, we use "hail nets"

              4c020abd-54ec-4ca1-92ae-32189ef4c0a6-εικόνα.png

              Also, the Greek Agricultural Insurance Organization runs a
              Hail Suppression Program with Airborne Means.
              The Program is based on the conceptual model of "Beneficial Competition", introducing artificial
              nuclei in the hailstorms that compete with the natural ones for the available supercooled water,
              forming smaller hailstones, thus increasing the possibility to melt during their fall, reaching the
              ground as rain.

              idefix37 laura79 2 Replies Last reply Reply Quote 2
              • idefix37
                idefix37 Sailor Moderator @Gkikas LGPZ last edited by idefix37

                @gkikas-lgpz
                In France hail nets are used too, in fruit trees plantations.

                Are you using cloud seeding with silver iodide or other chemical as explained here:
                https://en.m.wikipedia.org/wiki/Cloud_seeding
                I don’t think it is used in France.

                Here there are people using locally hail cannon:
                https://en.m.wikipedia.org/wiki/Hail_cannon

                But difficult to prove that it works very well.

                Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                • Gkikas LGPZ
                  Gkikas LGPZ Moderator @idefix37 last edited by

                  @idefix37
                  We use seeding of Silver Iodide (AgI) or dry ice from aircrafts to the target area.
                  For more info:

                  https://www.3dsa.gr/en/activities-en/weather-modification

                  idefix37 1 Reply Last reply Reply Quote 0
                  • idefix37
                    idefix37 Sailor Moderator @Gkikas LGPZ last edited by idefix37

                    @gkikas-lgpz
                    Interesting, so in Greece they use the same technology to increase rainfall ? I heard the Chineses carry a similar program for rain too.
                    In France in some vineyards and fruit trees plantations they use anti-hail rockets but not planes.

                    Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                    • K
                      Kebab5 @idefix37 last edited by

                      @idefix37 Thank you for the information! I believe the Satellite Infra+ layer is the one I can see when I go to Menu>More Layers>Satellite>More in the bottom>IR.

                      @petra-pik thank you for the point on 'Precip. type'. I was also initially thinking that it would give an idea.

                      idefix37 1 Reply Last reply Reply Quote 0
                      • idefix37
                        idefix37 Sailor Moderator @Kebab5 last edited by

                        @kebab5 said in How to know if it will hail:

                        I believe the Satellite Infra+ layer is the one I can see when I go to Menu>More Layers>Satellite>More in the bottom>IR.

                        Yes, select Infra+

                        2955093C-F5AC-4283-ABA2-9EEBEA4034FE.jpeg

                        Risk of hail is shown by red / dark red top clouds

                        1 Reply Last reply Reply Quote 3
                        • Gkikas LGPZ
                          Gkikas LGPZ Moderator @idefix37 last edited by

                          @idefix37
                          Back in the 90's we run a rain enhancement project
                          but the effectiveness was questionable.
                          .
                          Yesterday's hail as seen from wx. radar south of Larissa
                          and the flight path of aircraft for hail suppression .

                          a92d07e1-09d6-4603-af8d-5288fe085f22-εικόνα.png

                          1 Reply Last reply Reply Quote 1
                          • M
                            mytom2 @melanie75 last edited by

                            @melanie75 said in How to know if it will hail:

                            @kebab5 said in How to know if it will hail:

                            Hi @wordle online

                            I'm not an expert so for me it is difficult to interpret all the values I see in the app but I'm specifically interested in knowing the probability of hail. I've read that some numbers may mean severe storms including hail but I couldn't really understand how to read the data in the app. I think it would be nice to have a map that shows hail forecast but I'm not sure if this is scientifically possible. Any help would be greatly appreciated.

                            I think we need to depend on the hydrometeorological center to know exactly about the weather.

                            wordle online

                            1 Reply Last reply Reply Quote 0
                            • laura79
                              laura79 @Gkikas LGPZ last edited by

                              @Gkikas-LGPZ eso es una excelente idea👏

                              maria laura

                              1 Reply Last reply Reply Quote 0
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