Why is the RMK section being promulgated internationally? It was my understanding this was reserved for national dissemination only. There are no applicable national differences notified in respect of Italian METARs in any of the WMO literature.
While the WMO Manual on Codes does suggest that RMKs are not for national transmission, this is not something that is adhered to in practice. About 20% of the METARs that WAFC London passes on via SADIS have RMKs.
It doesn't seem to do much harm. What frustrates me is the met providers who take it upon themselves to insert plain language remarks without bothering to use the RMK delimiter. Take a bow, Sweden, for this particularly poor example:
TAF ESSL 230300Z 230412 01003KT 6000 BR BKN002 PROB30 0406 4000 BR SCT002 BECMG 0609 SCT008 ISSUED BY ESSA=