The red dust cloud evolved as many planets in the solar system are heavy in this element, Mars, for instance. There are portions of the Earth that exhibit a red
clay soil, Australia and the Southeastern US, but this is not a native soil as much as an accumulation of deposits. During the breakup of the Asteroid Belt, many
planets that had this element, heavily, were pelted to pieces. Molten lava spewed into space became the asteroids. Iron ore is magnetically configured to pull
out of any soup it is free to move within, and does so particularly in space. Thus, the dust, during poofing off into space during demolition derby's as Planet X
and its complex of Moons moved through what is now the Asteroid Belt, moved, and became part of the Planet X tail. Planet X, like a big magnet, swept
through the area during the poofing phase, and emerged with a larger dust cloud, each time.
We have mentioned that the tail curls toward the Earth, pulled by gravity and magnetic and other attractants, thus red dust lands hours before the point of passage. Thus, red dusting is a countdown clue, that only hours remain. The Earth, at this point, has been stopped in its rotation for days, approximately a week. Thus, since the South Pacific is more in line with where the tail is coming from, will this be the spot where the lick of the tail is first experienced? Dust clouds, as anyone experiencing a sand storm will attest, have a life of their own. The cloud itself exists because there is some kind of glue holding it together. The dust clings to the debris which clings to the larger debris such as moons, and these cling to Planet X. There is more than gravity involved, as this is too simplistic an explanation, and more than magnetism though the iron ore is certainly more magnetically active than most dust clouds.
Debris follows the pattern of the tail, all being included in the dynamics. Debris toward the end of a moon swirl that is curling toward the Earth and giving it a tail lick, so to speak, may be as massive and likely to cause damage as debris toward the Planet X portion of the tail. Look to the planets in the Ecliptic, with the more massive at outer orbits. The planets have their positions, their placement, for various reasons, and size is not the determinant as to what is closest to the gravitational giant, the Sun. In like manner, larger debris may in fact be trailing smaller, within a moon swirl trailing behind Planet X. Thus, all parts of the globe report debris, China as well as Egypt, in the past. The tail streams behind Planet X, which is moving rapidly and has been during the preceding months, and is involved in swirling motions as the Moons have a dance between themselves. Thus, there is motion already.
A tail swirl, moving like a slow moving tornado, approaches Earth which has magnetic as well as gravity attraction. Thus, it is not simply a head-on hit, tail to Earth, as it is also a sideways hit from swirling matter coming from this or that side. Then there is the motion of a tail swirl being curled toward Earth, continuing the curl. Like a whip that curls around what it is thrown against, the tail can warp all around the Earth during such a lick. There are no parts of the globe that do not report red dust, frankly. It is perhaps more extreme on those sides of the globe that will be facing the approach, but elsewhere is not exempt. Debris, as with red dust, may have a slight weight to the sides of the Earth facing the approaching Planet X complex, but from the standpoint of an individual worries about having a boulder land on his head, the odds are so close as to be statistically insignificant, as to which side of the Earth you are on.