Pic of the week: ‘Mothership’ supercell drops two tornadoes on Tulsa

This, ladies and gentleman, is what we call a “mothership” supercell. Meteorologists and storm chasers refer to a select few supercell thunderstorms as “motherships” for a simple, very non-meteorological reason: they resemble spaceships. To be considered a mothership supercell, the whole structure of the storm must typically be seen from top to bottom and end…