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    Problem with the visualization of NEMS.

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    • Gkikas LGPZG
      Gkikas LGPZ Moderator Meteorologist
      last edited by

      I see tomorrow afternoon's rain maps for Greece.
      Due to instability and daylight heating, both ECMWF and GFS show rain over mainland Greece.
      https://www.windy.com/?rain,2017-06-25-15,39.249,22.786,6,m:eLragKt,a:FFMFF
      https://www.windy.com/?gfs,rain,2017-06-25-15,39.249,22.786,6,m:eLragKt,a:FFMFF
      Although the NEMS shows no rain for the same time (25 June/18:00)
      https://www.windy.com/?mbeurope,rain,2017-06-25-15,39.249,22.786,6,m:eLragKt,a:FFMFF
      if I you see the basic meteogram, there is 3,2 mm of rain.
      https://www.windy.com/?mbeurope,rain,38.771,23.357,6,m:eLragKt,a:FFMFF,d:tn
      It shows that the meteogram is correct but the rain field visualization is not.

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

        ...... I take a look in meteoblue (were the data are coming from) and I realize that
        there is the same problem in "weather maps" (precipitation for Sunday afternoon)
        https://www.meteoblue.com/en/weather/map/precipitation/greece
        but .... there is no problem in "weather maps/New"
        https://www.meteoblue.com/en/weather-maps/preveza_greece_254698?variable=precipitation3h_cloudcover_pressure&level=surface&lines=none&mapcenter=38.9562N20.7505&zoom=6

        So, I beleve that the problem starts from meteoblue.

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

          ... I found the cause!
          The meteoblue visualizes 1 hr preci. and 3hr preci. for Greece with the same image!
          https://www.meteoblue.com/en/weather/map/precipitation1h/greece
          https://www.meteoblue.com/en/weather/map/precipitation/greece

          But this doesn't happens for other countries!

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

            As a general remark, it should be noted that
            visualization software, sometimes, present "fake images" from the data that take
            from the models.
            We, meteorologists, must take into account the synoptic situation before we write down a forecast.
            MODELS GIVE OUTPUTS, METEOROLOGISTS PROVIDE FORECASTS.

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