video solution #2- extreme weather

7
Give an explanation as to how a Supercell Thunderstorm can develop a rotating updraft. Elizabeth Greenblatt

Upload: elizabethgreenblatt

Post on 14-Aug-2015

27 views

Category:

Education


2 download

TRANSCRIPT

  1. 1. Give an explanation as to how a Supercell Thunderstorm can develop a rotating updraft. Elizabeth Greenblatt
  2. 2. What is a Supercell Thunderstorm? Also known as a Severe Thunderstorm Must contain at least one of the following characteristics: Hail with a diameter of three-quarter inches or greater Wind damage or gusts of 50 knots (~58 mph) or greater And/or a tornado
  3. 3. Destabilizing the Atmosphere Mechanisms of producing a larger lapse rate Heating the ground and warming the surface Bring in cold air aloft Both heating the group and cold air aloft Convective Instability
  4. 4. What is the rotating updraft? Formed when a thunderstorm meets the strong gusts of wind Usually found towards the rear of the Supercell thunderstorm Also called mesocyclone Possible contributor to tornados
  5. 5. Severe Thunderstorms vs. Air-Mass Thunderstorms Tilt of the updraft: Air-Mass Thunderstorms: updraft of air is vertical Severe Thunderstorms: updraft is tilted Tilt of updraft can produce more severe weather