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Wind, weather and waves
CONTENTS
Knowing the Elements
WEATHER
The Atmosphere
An ocean of air
Energy makes the weather go around
Moisture in the air
Is the weather stable or unstable?
Air on the move
Weather – The Elements in Action
Airmasses and fronts
Pressure and wind
Weather systems
Action at the front
Weather and your safety
Clouds – Weather Made Visible
Developing a weather eye
Relating sky change to the forecast map
How to read the signs
Weather lore
Fog – Clouding the Picture
WIND
Regional Wind Effects
Atmospheric stability and wind
The lake breeze
Nearshore Wind Effects
Channelling/funnelling
Coastal convergence
Corner effects
Cliff effects/lee effects
Valley winds (katabatic and anabatic winds)
WAVES
Changes in Water Level
Wind set-up and seiche
Waves
Wave patterns and effects
Currents and wave/current interaction
Seeking shelter
WHEN THE ELEMENTS RAGE
Thunderstorms
The thunderstorm cloud
What will you see when a storm moves in?
Isolated summer thunderstorms
Frontal thunderstorms
Squall Lines
Stormy sky quick reference
Lightning
Tornadoes, waterspouts, and cold-air funnels
Intense Lows in Spring and Fall
Hurricanes
Hazards From Winter Conditions
Icing
Snowsqualls
MARINE EMERGENCIES
Before You Go
You’re in Cold Water!
How Do You Help Someone With Hypothermia?
LOCAL CONDITIONS
USING THIS GUIDE TO LOCAL CONDITIONS
LAKE ONTARIO
Introduction
Conditions on Eastern Lake Ontario and the St. Lawrence River
Conditions from Cobourg to Metropolitan Toronto
Conditions on Western Lake Ontario
LAKE ERIE
Introduction
Conditions on Eastern Lake Erie
Conditions on Western Lake Erie and Lake St. Clair
LAKE HURON/GEORGIAN BAY
Introduction
Conditions on Georgian Bay
Conditions on Southern Lake Huron
Conditions on The North Channel and Manitoulin
LAKE SUPERIOR
Introduction
Conditions on Lake Superior
SMALLER LAKES
Introduction
Lake Simcoe
Lake Nipissing
Lake Nipigon
Lake of the Woods
WORKING TOGETHER
MARINE WEATHER SERVICES ..... WHAT WE HAVE TO OFFER YOU
Gathering the Information You Need
What Kind of Information Can You Get?
Marine forecasts (offshore)
Recreational Marine Forecast
Marine observations summary
Where Can You Get Forecast Information?
Weatheradio
Marine Radio (CCG)
Great Lakes Marine Facsimile Package
Using the forecast
MAREP .... how you can help us help you
CONVERSION TABLES
READING SUGGESTIONS
GLOSSARY