WeatherHydrologic Cycle – The driving engine

EvaporationTransportationCondensationPrecipitation

Three Cloud TypesCumulusStratusCirrus

Weather: CloudsCirrus Clouds

Weather: Clouds

Weather: Clouds

Weather: Clouds

Weather: CloudsCumulus Clouds

Weather: Clouds

Weather: Clouds

Weather: CloudsStratus Clouds

Weather: Clouds

Weather: Clouds

Weather: Clouds

WeatherCloud formation

ConvectionGeographic barriers (mountains)Meeting of air masses (fronts)

Cold & warmFigure 23.10 & 23.11

Condensation nuclei

WeatherPrecipitation

Liquid or solid form Must fall !!!!!

Formation Coalescence Ice crystals

WeatherAir Masses

Consist of the same temperature and moisture content

Takes on the characteristics of its point or origin

WeatherFronts

The boundary formed between two air masses Cold Warm

Fronts do not mix

WeatherStorms

Thunderstorms Convective Frontal Indicates severe instability in the upper atmosphere Hail

Tornadoes Directly associated with thunderstorms Significant instability Fujita Scale Palm Sunday

April 11, 1965

Fujita Scale for Tornado Strength

Palm Sunday - April 11, 196547 Tornadoes in 11 hrs.

3rd deadliest outbreak12:56 pm first touchdown

256 deathsIN – 137 deaths, 1,200 injuries

62 Elkhart Co.17 Howard Co.

Palm Sunday - April 11, 1965

Palm Sunday - April 11, 1965

Palm Sunday - April 11, 1965Twin funnel clouds: Elkhart, INApril 11, 1965

10 fatalities

Palm Sunday - April 11, 1965Greentown, IN

Palm Sunday - April 11, 1965Kokomo, INDowntown Area

Palm Sunday - April 11, 1965Goshen, IN

Palm Sunday - April 11, 1965Lake Pleasant, IN

Palm Sunday - April 11, 1965Toledo, OH

Palm Sunday - April 11, 1965Toledo, OH

WeatherHurricanes & Typhoons

Significant low pressure cell Tropical depression Tropical storm Develop off the coast of Africa Feed of the warm ocean water

WeatherUnderstanding a Weather Map