11:670:101 Lecture Notes - Lecture 9: Mesoscale Convective Complex, Wind Shear, Tornado Warning
11 May 2020
School
Department
Course
Professor
Document Summary
Convective storms that form with rising air. Large hail wind gusts greater than or equal to 50 knots or a tornado. Tend to form in warm humid air masses away from significant weather. Can last for hours and produce severe weather. Strong surface winds large damaging hail flash floods and violent. Ordinary cell (air mass) thunderstorm stages tornadoes. Contain a number of cells, each in a different stage of development. Form a region of moderate to strong vertical wind shear. Gust front: leading edge of the cold air out flowing air. Micro-bursts: downbust with winds extending only 4km or less. Mesoscale convective complex: a number of individual multicell thunderstorms grow in size and organize into a large circular convective weather system. Long lasting thunderstorm with a single violently rotating updraft. Flash floods rise rapidly with little or no advance warning. Many times caused by stalled or slow thunderstorm. Large floods can be created by training of storm systmes.
