'It is impossible for 1.1 million people to leave their homes within 24 hours', says #BBC corr Tom Bateman in Jerusalem.
'It would involve 40,000 people per hour. On the ground convoys of the International Red Cross and United Nations humanitarian agency staff have been spotted travelling south from #Gaza City towards the southern part of territory, which may be in preparation of possible evacuation operation.
But it would bring chaos to try to carry it out on this scale within 24 hrs'
