“Inside the Megastorm” will air at 7 p.m. Nov. 18 and again at 9 p.m. Nov. 21 on WCNY channels 24.1 and 24.4.

The one-hour program replaces “Richard Bang’s South America: Quest for Wonder” on 24.1 and another “Nova” program on 24.4.

The Nova special will be followed at 8 p.m. on both WCNY channels by Ken Burns’ “Dust Bowl”, a documentary that chronicles the worst man-made ecological disaster in American history that resulted in a decade-long drought during the 1930s nearly swept away the nation’s breadbasket. The program features interviews with 26 Dust Bowl survivors, dramatic photographs and seldom-seen film footage that brings to life stories of human suffering and perseverance.