Thank you @idefix37 and @TheRadarGuy for your informative answers.

Also, one more question. On the interface, is there any indication which model run the data is using? Like shouldn't it say, "ECMWF 9km - 12z 01/22" for example (where it says "ECMWF 9km"), so we know which run the data output is showing? Perhaps I am missing this somewhere.

As for the geopotential height data, are the isohypes arbitrary? Shouldn't they be every 60 meters as standardized (540, 546, 552 decameters for example, or 5400, 5460, 5520)? They appear random. Perhaps the code needs to be arbitrary for the user interface?

Thanks again!

Hi Windy,

I'm a fan of your plotting as a meteorologist/climatologist. Is there a reason when you click "Rain, Thunder" and animate precipitation, the isopleths do not animate? This is particularly of interest on the meteorology side since this is the only modern website I know of that plots ECMWF data at higher time resolutions compared to other sites. Speaking of ECMWF data, do you pay a large fee to plot their data?

Thanks