Mature Stage Ordinary Air Mass Thunderstorm Developing Air Mass Thunderstorm (11 km)

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Slide 2 Slide 3 Slide 4 Mature Stage Ordinary Air Mass Thunderstorm Slide 5 Developing Air Mass Thunderstorm (11 km) Slide 6 Dissipating Air Mass Thunderstorm Slide 7 Multicell storm Slide 8 Severe Thunderstorms Slanting updraft and downdraft Slide 9 Multicell storms Downbursts microbursts and macrobursts Slide 10 Dust clouds from microbursts Slide 11 Slide 12 Wind shear Slide 13 Pre frontal Squall line Slide 14 Pre frontal Squall line Slide 15 Squall Line with trailing stratiform top Slide 16 Non-rotating thunderstorm can result in straightline winds Or Derechos Slide 17 Supper cell Thunderstorms Slide 18 Supper cell Thunderstorm Severe long lasting storm with a violent rotating updraft. Slide 19 Slide 20 Slide 21 Slide 22 Slide 23 Slide 24 Slide 25 Flash Floods Slow moving or Stalled thunder Storm, especially in canyon areas 135 deaths in 1976 flood 12 inches of rain in 4 hours (normal ~16 inches /year) Slide 26 Slide 27 Slide 28 Slide 29 Slide 30 Mesoscale convective complex Slide 31