As the high pressure seems to prevent the low Cumulus cloud from forming, we are witnessing what is going on just a couple of thousand feet higher. Vast numbers of aircraft are relentlessly spraying substances unknown into our skies above London. We also see these aircraft leaving trails at ever lower altitudes. the lowest recorded today was 17,000ft. Even the new revised official figure for contrail formation, which was lowered from 37,000ft to 20,000ft last year by the MET following difficult enquiries, can’t explain this.
See the gallery here.