If I understand this correctly, there was a NASA operated U-2 (ER-2) flying a few thousand feet over the 20 May 2013 tornadic supercell that devasted Moore, OK?
If I understand this correctly, there was a NASA operated U-2 (ER-2) flying a few thousand feet over the 20 May 2013 tornadic supercell that devasted Moore, OK?
NASA tells the story more fully here.