Same isoline

[tomacat]

https://www.windy.com/?500h,2024080712,35.747,154.819,5,i:gh

Some isolines must be missing here.

[Suty]

@tomacat Can you please provide more info about the unit you use for isolines?

[tomacat]

@Suty

Forecast Time: 2024-08-07 12:00 UTC
Attitude: 500 hPa
Isolines: Geopotential height
Forecast model: ECMWF
Reference time: 2024-07-29T06:00:00Z

[idefix37]

@tomacat

I don’t see an issue with the Geopotential isolines. It is typically a cut-off low.

With customized color scale

https://en.m.wikipedia.org/wiki/Cut-off_low

[tomacat]

@idefix37 Well explain.