Description of weather overlays
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@meteo-GR Yep
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The freezing altitude layer, how does that work? I am often looking at ski weather and on those sites, the current freezing altitude (frostgrenze in German, vorstgrens in Dutch) is at around 3800 meters. Yet the 'freezing level' layer shows values of 2500 to even 1900 meters for those locations, even though the current temperatures there are much higher.
Am I misinterpreting what the freezing altitude layer actually is or does? Or is the data faulty?
Thanks!
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Are the two numbers in the wind section - gusts and sustained winds?
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- how do I find the forecast for the storm Irma
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@shappy4 The first number is wind direction and the second one is wind velocity (average value for last 3 hours).
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Hello. What does the height of 100 meters mean? Above sea level or terrain? The navigation satellite writes that I have a height of 160 meters above sea level (160 m msl).
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@IgorXXXmirror Hi, 100m layer is above model terrain. Unfortunatelly it is very coarse terrain with 9km horizontal resolution.
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@TZ Thanks
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When using wave overlay, I see a color key indicating wave height and also boxes with values in them with either- or~ before the value. These numbers never match the color key .
Please explain.
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What means the 330 before 64km/h?
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@Atalantia
wind direction 330 degrees (coming from NorthWest)
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@ivo said in Description of weather overlays:
Rain rate:
I cannot see RAIN RATE in the settings ....
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Is there an overview of the meteograms that Windy displays for the forecasts? I am not sure of what some of the background colors and charts mean.
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@alecloudenback Me neither. I was searching for a manual to find out about the meaning of the different colors,graphs,pictograms etc....
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@tz What height does surface refer to? There would technically be no wind at the surface, so it must be some standard height above the ground (whatever the common reading instrument height is). What is that height? (i.e. 2m, 10m, 20m?). I'd like to use the data to estimate wind shear at a given location and using surface (0m) is not valid.
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@joalb
Surface wind refers to 10m above model's surface.
Surface temperature refers to 2m.For ECMWF datasets, see https://www.ecmwf.int/en/forecasts/datasets/set-i
For ICON, see chapter 6 (Global output fields) in
"Database Reference Manual for ICON"
https://www.dwd.de/SharedDocs/downloads/DE/modelldokumentationen/nwv/icon/icon_dbbeschr_aktuell.html
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.... or scroll on top of this page
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@ivo From Leilani Estates Big Island Hawaii: what is the source of SO2 data? Satellite only? Any way to include data from ground monitors such as: http://weather.hawaii.edu/vmap/hysplit/ ?
