All Credits to BMWFanboy and TopStrongest Wiki[]
Introduction[]
Ghidorah carries a country sized superstorm with him
Basics[]
The storm is created by Ghidorah flapping its wings, and extends all the way to the stratosphere (from the official Monarch site)
"Muscle tendons on the wings are so hyper-tensile that their massive aerodynamics could generate hurricane-force winds when in flight.
Simply put, if Monster Zero were to fly again, the stratosphere would be torn open by an otherworldly tempest of thunder and lightning our sky has never seen."
Calculation[]
South America about 5117.714 km at its widest
5117.714/436 = 11.73 km/px
Storm width = 241 px or 2828.82 km
To be safe, let us take the bottom of the stratosphere as a fair minimum for the height = 10 km
Volume of the storm = 6.28e+22 CC
Thus, mass = 6.28e+22 x 1.225 (dry air density) = 7.693e+22 kg
Now, as for speed, we've Ghiidorah's upward trajectory at 112 mph from the site, and the movie (1:18:20) states his hurricanes are Category 6, so 2 ends
Low end = 50.0685 m/s
High end = 70 m/s
KE (LE) = 9.64262E+25 J
KE (HE) = 1.88479E+26 J
Result[]
Ghidorah flies at 2.3046415e+16 to 4.5047562e+16 Tonnes of TNT - Multi-Continent level