Meteorologists are closely monitoring the development of supercell thunderstorms across the Midwest, which could lead to severe weather conditions. Supercells are characterized by a rotating updraft, known as a mesocyclone, and are capable of producing severe weather phenomena such as large hail, damaging winds, and tornadoes. The National Weather Service notes that atmospheric conditions are favorable for these storms, with warm, moist air at the surface and cooler, drier air aloft creating instability, along with strong wind shear contributing to rotation.