User:Wxtrackercody/May 1973

Meteorological synopsis
By the morning of May 27, a strong cold-core low was positioned over Kansas, with double-barreled surface low-pressure areas centered over Nebraska and Missouri. In particular, barometric pressure at the center of these lows was measured under 982 mb, unusually low for late May. In the warm sector of that cyclone, a warm and moist environment developed across the Southeastern United States. Temperatures rose well into the upper 80s to near 90 F, while dewpoints topped 70 F. Morning atmospheric soundings already indicated convective available potential energy values in excess of 1,400 J/kg, and the prevailing environment became significantly more unstable by the afternoon coincident with surface heating. This destabilization occurred in spite of widespread showers and thunderstorms across Central Alabama in particular given the lack of a capping inversion in place. Wind shear, although not impressive initially, steadily increased throughout the day and became increasingly supportive of supercell thunderstorms. Eventually, waves of storms progressed across Alabama, resulting in intense and extremely long-tracked tornadoes across central portions of the state.