ATOC 1050 Chapters 17 and 19 notes

ATOC 1050 Chapters 17 and 19 notes - Chapters 17 and 19...

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Chapters 17 and 19, Rauber – Thunderstorms and Hail I. Thunderstorms: A. Thunderstorms are convective storms that contain lightning. There are approximately 44,000 to 54,000 thunderstorms every day and approximately 100 lightning strokes/second! B. Three stages of a thunderstorm: C. Types of thunderstorms according to your text: 1. Air mass thunderstorms 1
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a). usually isolated b). form in the absence of vertical wind shear c). form within an air mass instead of near a front or dry line. d). last about 1 hour e). precip. from storm may cover an area of 9 to 12 miles f). form during hot, summer afternoons 2. Mesoscale convective systems (MCSs) - a). clusters of thunderstorms b). cover large geographic areas c). can last for several hours and produce a lot of rain d). below is a visible satellite image of a MCS: 2
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3. Squall lines (or multi-cellular lines ) - a). usually form in front of cold fronts and/or dry lines b). typically 100s of kilometers long but only a few kilometers wide.
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