TORNADO LIFE CYCLE - NOAA

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Tornadoes sometimes develop along squall lines as opposed to the supercell variety. This is an example of a wall cloud along the leading edge of a squall line taken west of Springfield, IL near Interstate 72. (photo courtesy of Jarrod Cook).
“Landspout” tornadoes are tornadoes that do not arise from organized storm-scale rotation or super-cell thunderstorm, and therefore are not associated with a wall cloud (visually) or a mesocyclone (on radar). Landspouts typically are observed beneath cumulus clouds (often as no more than a dust whirl), and essentially are the land-based equivalents of waterspouts. Landspout over White Sands Missile Range, NM, 5/2/07 (photo courtesy of Dennis Page).
Page 1 and 2: TORNADO LIFE CYCLE Visual Clues of
Page 3 and 4: Mature tornadoes. Views to north an
Page 5 and 6: Dissipating (“rope stage”) torn
Page 7 and 8: Large tornado near Girard, Kansas,
Page 9 and 10: Cone shaped tornado located south o
Page 11 and 12: Descending tornado with debris and/
Page 13 and 14: Narrow tornado near Friona, TX, 4/1
Page 15 and 16: “Multi-vortex” tornadoes have t
Page 17 and 18: “Rope” tornadoes often signify
Page 19: Rope tornado taken near Twentynine
Page 23 and 24: A “waterspout” is a tornado occ
Page 25 and 26: A “Dust Devil” is usually a sma
Page 27 and 28: Tornado/Funnel Cloud Look-a-likes:
Page 29: Steam cloud. Courtesy Jeffrey Tower

TORNADO LIFE CYCLE - NOAA

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