Hi there,

today I encountered that the METAR forecast seems to be wrong interpreted in terms of IMC via VMC. See attached screenshot that shows deviation between skydemon and aeroweather whereas aeroweather seems to be correct.

METAR states few in 3000ft at EDDL which is IMC for skydemon but VMC for aeroweather (and myself).





Thanks,
 Oliver

Hi,

To me, CB means IMC and, looking at your METAR, I second Skydemon's interpretation.

Hi,

This is just your personal opinion and I would somehow agree but it is interesting, that other tools calculate the other way around.

Whether a situation is IMC or not is based on some defined facts as visibility and ceiling depending on the surrounding airspace. As far as I know CB is none of these facts and most of even the commercial flights that operates under IFR would probably avoid CBs as well.

Therefore CB - to my opinion - will not lead to IMC (which implies legal issues when operating under VFR) but every pilot should be aware of and take his/her own decision. Once there is a common definition of a "meterological state" no tool should mix it up with interpretation even if it is for safety purpose. Just my 2ct.

Cheers,
 Oliver