Well you are right. Will fix it in some next issue.

I reported this very issue a couple of weeks ago. I dont get half, I get about 15% of wind at the top. Renders the app pretty useless.

Also take a look at http://www.weatheronline.co.uk/cgi-bin/expertcharts?LANG=en&CONT=soas&MODELL=gfs&MODELLTYP=1&VAR=pslv&WMO=&ZOOM=0&RES=0&PERIOD=&PANEL=0&ARCHIV=0&BASE=201704090000%26HH%3D168 try different runs and you'll see totaly different forecasts for next Sunday.

same here... RAW mode first sir ;)