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Mature Stage Ordinary Air Mass Thunderstorm
Developing Air Mass Thunderstorm (11 km)
Dissipating Air Mass Thunderstorm
Severe Thunderstorms Slanting updraft and downdraft
Multicell storms Downbursts microbursts and macrobursts
Dust clouds from microbursts
Pre frontal Squall line
Pre frontal Squall line
Squall Line with trailing stratiform top
Non-rotating thunderstorm can result in straightline winds Or Derechos
Supper cell Thunderstorms
Supper cell Thunderstorm Severe long lasting storm with a violent rotating updraft.
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)
Mesoscale convective complex
Chapter 14. Wall Cloud associated with a super cell thunderstorm.
Unit 4 – Atmospheric Processes. Necessary Atmospheric Conditions 1. Water vapour must be available in the lower atmosphere to feed clouds and precipitation.
Tornadoes, MCSs and Downbursts. Review of last lecture 1.The general size and lifetime of mesoscale convective systems, thunderstorms and tornadoes. 3.
Thunderstorms. Ordinary Cell Thunderstorms cumulus stage cumulus stage mature stage mature stage dissipating stage dissipating stage Ordinary cell thunderstorms.
National Weather Service Shreveport Working Together to Save Lives Understanding Severe Storms.
THUNDERSTORMS 5 Ingredients for a thunderstorm Lift from Lift from Cold/warm front Cold/warm front Gust front Gust front Daytime heating Daytime.
Thunderstorms. Review of last lecture 1.Two types of lightning (cloud-to-cloud 80%, cloud-to- ground 20%) 2.4 steps of lightning development. 3.How fast.
Chapter 14. Thunderstorms A storm containing lightening and thunder; convective storms Severe thunderstorms: one of large hail, wind gusts greater.
Thunderstorm Structure and Evolution Eric A. Pani The University of Louisiana at Monroe.
Chapter 10. Thunderstorms A storm containing lightning and thunder; convective storms Severe thunderstorms: one of large hail, wind gusts greater.
Class #9: Monday, July 19 Thunderstorms and tornadoes Chapter 14 1Class #9, Monday, July 19, 2010.
Average annual # of days with thunderstorms Deaths from Natural Hazards in the US.
Thunderstorms. Chapter 13 review A persistence forecast is a prediction that future weather will be the same as the present weather, whereas a climatological.
Mesoscale convective systems. Review of last lecture 1.3 stages of supercell tornado formation. 1.Tornado outbreak (number>6) 2.Tornado damage: Enhanced.
1. HAZARDS Wind shear Turbulence Icing Lightning Hail 3.
Characteristics of Isolated Convective Storms Meteorology 515/815 Spring 2006 Christopher Meherin.
Objectives 1) Describe the conditions necessary for the formation of thunderstorms and tornadoes. 2) Describe the hazards of thunderstorms and tornadoes,
Warm up Answer these questions in your notebook: 1. What is the difference between humidity and relative humidity? 2. What are clouds made of? 3. List.
Stability and Thunderstorms ESS 111 – Climate and Global Change.
Microbursts Hazards of air mass thunderstorms. Today Mature phase Downdraft.
Severe Weather A SCIENTASTIC PRESENTATION. Storm Chaser’s Clip dominator.htm Discussion.
Chapter 10: Thunderstorms and Tornadoes Thunderstorms Thunderstorms Tornadoes Tornadoes Tornadic thunderstorms Tornadic thunderstorms Severe weather and.
Thunderstorms About 1,800 T-storms occur around the world at any instant Where do they occur the most? National Lightning Safety Institute.
Severe Weather 1.Thunderstorms 2.Tornadoes 3.Hurricanes.
The Thunderstorm: Ultimate Instability A convective rain or snow shower accompanied by thunder –What causes thunder? –Lightning (spell it correctly):
Nature of Storms Chapter 13. Thunderstorms For a thunderstorm to form, three conditions must exist. 1.There must be an abundant source of moisture in.
Thunderstorms. Thunderstorm Frequency See Figure in text.
Thunderstorms and Tornadoes Chapter 14. Thunderstorm: A storm containing lightning and thunder. Convective storms Warm, moist air starts moving upwards.
Overview All tstorms are not created equal Severe thunderstorms produce the most violent weather conditions on Earth Supercells – characterized by intense,
Stability and Severe Storms AOS 101 Discussion Sections 302 and 303.
AOSC 200 Lesson 18. Fig. 11-1, p. 312 Lifted Index A parcel of air will not rise unless it is unstable. The lifted index follows a parcel of air as it.
THUNDERSTORMSAnd SEVERE WEATHER SEVERE WEATHER. What’s in a Name? Cyclone refers to the circulation around a low-pressure center Cyclone refers to the.
WEATHER PATTERNS CHAPTER 5 LESSON 2 Weather. Pressure Systems There are 2 types of pressure systems: High-pressure system – A large body of circulating.
Thunderstorms Section 13-1 p Thunderstorms Section 13-1 p
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Thunderstorm Formation A thunderstorm forms when warm, humid air rises rapidly within a cumulonimbus cloud.
Thunderstorms. Definition: a storm containing lightning and thunder. Associated with midlatitude cyclones, localized convection, orographic lifting and.
Cyclones and Anticyclones September 19, Name that cloud.
Characteristics of Isolated Convective Storms Morris L. Weisman Joseph B. Klemp Presented to you by: Elizabeth Polito.
Guided Notes about Severe Weather Chapter 13, Section 2.
Multicells, Lines, and Mesoscale Convective Systems METR 1004: Introduction to Meteorology Adapted from Materials by Dr. Frank Gallagher III and Dr. Kelvin.
Thunderstorms (Tormenta) and Tornadoes After completing this section, students will discuss the formation of violent weather patterns such as thunderstorms.
Chapter 13 The Nature of Storms. Thunderstorms Three conditions required: – Source of moisture – Rising air mass – Unstable atmosphere Air mass t-storms.
Severe Weather Guide How to Recognize, Identify, and Report Severe Weather.
Lecture 19 Chapter 11 Thunderstorms and Tornadoes.
There are 3 Stages of a thunderstorm: 1)Cumulus Stage 2)Mature Stage 3)Dissipation Stage.
Thunderstorms ASTR /GEOL Physics of Thunderstorms Two fundamental ideas: Convection Latent heat of vaporization/condensation.
Tropical Severe Local Storms Nicole Hartford. How do thunderstorms form? Thunderstorms result from moist warm air that rises due to being less dense.
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