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    Rain precipitation not predicted correctly

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    • Dennis VrolijkD
      Dennis Vrolijk | Premium
      last edited by Dennis Vrolijk

      Hi,

      I'm in Ljubljana Slovenia at the moment, and when I look in Windy I see that all forecast models predict it's going to rain around 23:00-00:00 CET.

      I'm on campsite right now and can tell from experience that it's raining pretty severely from 18:00 CET. The weather radar and the new Radar + layer are displaying the rain correctly. The Rain, thunder layer not.

      But what I find most remarkable that none of the forecast models (ECMWF and Meteoblue specially) predict any rain. I noticed it also earlier this week.

      Is there someone here who can share some insights on this behavior?

      I'm using the Windy app by the way on Android

      screenshot debug console

      SutyS idefix37I 2 Replies Last reply Reply Quote 0
      • SutyS
        Suty Administrator @Dennis Vrolijk
        last edited by

        @Dennis-Vrolijk Hi there, may I ask for how long the rain lasted?

        Dennis VrolijkD 1 Reply Last reply Reply Quote 0
        • idefix37I
          idefix37 Sailor Moderator @Dennis Vrolijk
          last edited by

          @Dennis-Vrolijk
          Hi,
          You compare your observation and the prediction of weather models. It seems there were thunderstorms in the area, that is very to forecast precisely. You said you observed heavy rain at 18:00 yesterday, but a wmo weather station in Ljubljana reported only rain this morning while weather models predicted rain during the night.

          CF2C9DBB-8AEF-4245-A8C2-771D2FBDF837.jpeg

          Thunderstorms are often very localized

          Dennis VrolijkD 1 Reply Last reply Reply Quote 0
          • Dennis VrolijkD
            Dennis Vrolijk @Suty | Premium
            last edited by

            @Suty said in Rain precipitation not predicted correctly:

            Hi there, may I ask for how long the rain lasted?

            The Rain lasted from 18:00 till around 21:00 and then from 23:00 it rained the whole night very heavily

            1 Reply Last reply Reply Quote 0
            • Dennis VrolijkD
              Dennis Vrolijk @idefix37 | Premium
              last edited by Dennis Vrolijk

              @idefix37 said in Rain precipitation not predicted correctly:

              but a wmo weather station in Ljubljana reported only rain this morning while weather models predicted rain during the night

              I can assure you that it were not just thunderstorms. From 23:00 it rained the whole night, very heavily. It is in fact still raining right now. But the weather models seem to have predicted that more accurately. According to ECMWF the rain should stop around 13:00

              The wmo weather station in Ljubljana reported no rain. All weather stations around Ljubljana reported a lot of rain during the night. I maybe would doubt if the reports of that weather station are correct? I'm on campsite close to (2km) the city of Ljubljana by the way

              1000074525.png

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

                @Dennis-Vrolijk
                I took this weather station as a reference by chance because it is in the city of Ljubljana. It is surprising that a station certified by the WMO can be inaccurate for reporting rain.

                1 Reply Last reply Reply Quote 0
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