<<Yes but if cloud base is 200 feet around the twr you are not in LVPs but you put a wx standby on because you can't see the landing traffic. I do know the difference!!!!>>
I never heard of that procedure during 35+ years in the business working at 4 aerodromes - two fairly small, one medium and one very big.
I presume from what has been said that new procedures exist for some sort of AFS standby in LVPs? All the years I worked at Heathrow I would think at least 10% of landers and departures couldn't be seen from ATC, but I know nothing of any "weather standby" preocedure.. Enlighten me please someone...
What about those airfields where certain thresholds can't be seen - are the fire brigade on permanent standby?