Show:
Air Masses
Fronts
Cyclones
Weather Types
Weather Types 2 (Hurricanes)
100
A large body of air, 1,600 km (1,000 mi) or more across
What is one characteristic of air mass?
100
Boundary that separates air masses of different densities
What is a Front?
100
Primary weather producer in the middle latitudes
What is a Middle Latitude Cyclone?
100
Cumulonimbus clouds Heavy rainfall Lightning Occasional hail
What are the features of a Thunderstorm?
100
Most violent storms on Earth
What is a Hurricane?
200
Polar (P): High latitudes & Cold Tropical (T) : Low latitudes & Warm
What is used to classify air mass?
200
Intensity of precipitation is greater, and Duration of precipitation is shorter
What is the Intensity, and Density of a Cold Front?
200
Form along a front where air masses are moving parallel to the front in opposite directions
Where does a Middle Latitude Cyclone form?
200
2,000 in progress at any one time 100,000 per year in the United States Most frequent in Florida and eastern Gulf Coast
What is the occurrence on Thunderstorms?
200
Typhoons in the western Pacific Cyclones in the Indian Ocean
What are Hurricane's known as?
300
Continental polar (cP) Continental tropical (cT) Maritime polar (mP) Maritime tropical (mT)
What are the four basic types of air mass?
300
• Cold air mass • Subsiding air • Clearing conditions
What dominates weather behind a Cold Front?
300
Eastward
What direction does Middle Latitude Cyclones move?
300
Warm air • Moist air • Instability (lifting)
What do all thunderstorms require?
300
Consists of winds between 61 to 119 km (38 and 74 mi) per hour
What is a Tropical Storm?
400
From the Gulf of Mexico and the Atlantic Ocean
Where does Maritime tropical occur?
400
Stationary, and Occluded Fronts
What are the types of Fronts?
400
• Largest weather contrasts occur in the spring • Changes in weather associated with the passage of a middle-latitude cyclone • Changes depend on the path of the storm
What are signs of their approach?
400
• Occur most often along a cold front • During the spring months • Associated with huge thunderstorms called supercells
What are the conditions for a Tornado?
400
• Strength of storm (the most important factor) • Size and population density of the area affected • Shape of the ocean bottom near the shore
What are some factors of a Hurricane's damage?
500
Occasionally in the northeastern United States causes the “Northeaster” in New England with its cold temperatures and snow
What influence can Maritime polar have?
500
Small slope (1:200)
What is the slope of a Warm Front?
500
Require two to four days to pass over a region
How long does it take to pass over a region?
500
Eyewall Near the center Rising air Intense convective activity Wall of cumulonimbus clouds Greatest wind speeds Heaviest rainfall • • Eye At the very center About 20 km (12.5 miles) diameter Precipitation ceases Wind subsides Air gradually descends and heats by compression Warmest part of the storm • Wind speeds reach 300 km/hr Generate 50-foot waves at sea Profile • Hurricane formation and decay Form in all tropical waters except the • South Atlantic and • Eastern South Pacific
What are the parts of a hurricane?
500
• Storm surge – large dome of water 65 to 80 kilometers (40 to 50 miles) wide sweeps across the coast where eye makes landfall • Wind damage • Inland flooding from torrential rains
What are the categories of Hurricane damage?