Extreme Weather Events Page 26 Lake Effect Snow: Occurs when Cold winds blow across a warm lake and...
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Transcript of Extreme Weather Events Page 26 Lake Effect Snow: Occurs when Cold winds blow across a warm lake and...
Extreme Weather Events
Page 26
Lake Effect SnowLake Effect Snow: : Occurs when Cold winds blow across a warm lake and picks up moisture which results in heavy localized snow
NYS Lake Effect Snow 2003
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BLIZZARDBLIZZARD: : Is a severe snowstorm with strong sustained winds of 35mph for 3 hours or more
NYS Lake Effect Snow 2003
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Lake Effect Snow: Lake Effect Snow: Cold wind blows across a warm lake and picks up moisture.
NYS Lake Effect Snow 2003
New York State & Lake Effect Snow
Prevailing Winds
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Where in New York State?
Topography- elevation of the land on the eastern end of Lake Ontario increasesWhat does this do?
Questions from Pages 23-24Questions from Pages 23-24
1. The warmer the water temperature and the cooler the air temperature the greater the potential for lake effect snow
Questions from Pages 23-24Questions from Pages 23-24
2. Prevailing South westerly winds blow across the entire length of Lake Ontario picking up the most moisture as possible
Questions from Pages 23-24Questions from Pages 23-24
3. Orographic effect- as the air moves inland it is forced to climb the slopes of the Tug Hill Plateau
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Hurricane Development
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Forecasting hurricanes has evolved
What is a Hurricane?
• A tropical cyclone • Counter-clockwise circulation
around a Low-Pressure System.• Sustained winds exceeding 64
knots (74 mph) • Usually about 500km in
diameter
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HurricanesHurricanes
Occur late summer or early fallOccur late summer or early fall Form over _______________ __________Form over _______________ __________ Gain energy fromGain energy from
Lose energy when they go over ___________ Lose energy when they go over ___________ or ________________or ________________
Produce ______________, and ____________ Produce ______________, and ____________
Tropical (warm) watersthe condensation of millions of gallons of water vapor from solar evaporation
landCold water
Storm surge High winds
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What is a Hurricane?
• Usually about 350-500 miles in diameter
• Length or duration- a hurricane can last for 1- 2 weeks
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Hurricane far off shoreRough surf
hundreds of
miles away.
Storm Surge
Storm surge is a bulge of ocean water that piles up beneath the hurricane
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Hey! Let’s check out the
storm!
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