GEO 211 1st Edition Lecture 33 Outline of Last Lecture I. Hurricane formation A. Stages of development1. Tropical disturbance2. Tropical depression3. Tropical storm4. HurricaneB. Saffirr-Simpson scale” for hurricanes/potential damageOutline of Current Lecture II. Chapter 14- Thunderstorms/tornadoesA. ThunderstormsB. Life cycle of ordinary storms:1. Cumulus stage2. Mature stage: intense storm3. Dissipation stage- updrafts begin to weaken and collapseC. Types of thunderstorms1. Single cell2. Multicell clusters3. Multicell lines (squall line)4. SupercellD. Severe thunderstorms produce one or more of these:Current LectureII. Chapter 14- Thunderstorms/tornadoesA. Thunderstorms- Estimated 45,000 storms develop each day (16 million a year)- Tropical regions associated with ITCZ develop most thunderstorms- In US, most develop in Southeastern states- Highest frequency in FloridaThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.B. Life cycle of ordinary storms:1. Cumulus stage- initial stage, updrafts dominate the cloud- Dry air from surroundings mixes into a cloud called entrainment2. Mature stage: intense storm- Begins when precipitation starts to fall- Updrafts become organized and strong- Updrafts and downdrafts exist side by side3. Dissipation stage- updrafts begin to weaken and collapse- Downdrafts dominate cloud laterC. Types of thunderstorms1. Single cell- ordinary cell: air mass thunderstorms, widely scattered summer storms, short lived (doesn’t produce severe weather)2. Multicell clusters3. Multicell lines (squall line)4. SupercellD. Severe thunderstorms produce one or more of these:- Hail (1 inch in diameter or larger- Tornadoes- Wind gusts (58 mph) or greater- Updrafts/downdrafts are titled- Gust front- boundary between dense, cold downdrafts and warm
View Full Document
Unlocking...