cloud bases in methars and TAFs??

[fudgy2000]

Hi! I was wondering are the cloud bases in methars and TAFs given by actual reference to MSL or AGL??

[TopBunk]

All given as AAL (above aerodrome level).

[eyeinthesky]

BUT the cloudbases given in the METFORM 215 (the pretty map) are in FT AMSL, which has caught a few people out when they try and go into an airfield which is 500ft AMSL and the METFORM is forecasting 8 oktas at 500 - 2000!!..:eek: