whats the difference between Gfs 27 km and Icon 13 km on windguru

https://screenshots.firefox.com/XuCU5DLd8cI0YhBh/www.windguru.cz

Fun or no fun..

www.windguru.cz/help.php?sec=models

It is a German Weather service Global model (DWD) and is a little different from most Global models. (Icosahedral grid pattern)
It has a higher resolution (13km) than GFS (27km), but in parts of Europe there is even higher resolution limited area versions (2.8km).
It produces forecasts 4 times a day and hourly forcast slices out to 78 hours for each run. (Not shown on the Windgutu forecasts in Australia - they are 3 hourly slices)

All the info here: www.dwd.de/EN/research/weatherforecasting/num_modelling/01_num_weather_prediction_modells/icon_description.html

For the Windguru forecast locations I frequently peruse, I would say that, so far, it seems a bit on the high side for winds, and often GFS seems more realistic past a couple of days. I am watching and comparing it with much interest though.

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sboardcrazy said..
Fun or no fun..

It's a prediction, not a prescription.

To me that ICON forecast looks a bit optimistic compared with the Windguru and Predictwind forecasts. It will be interesting to see what happens. I will be looking for a post Mark.

Here is Predictwind for Laurieton offshore. Seems to agree more with Windguru GFS and this is offshore, not on the lake:




I also find the ECMWF model gust prediction to be a bit high usually, but not always.