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Common Questions About Mid Latitude Cyclones Notes

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Common Questions about Mid Latitude
Cyclones
Give seven characteristics of mid latitude cyclone
1. Move west to east
2. It has cold front and warm front
3. Affect south Africa in winter
4. They occur in families or groups
5. It has oval isobars
6. Occur through out the year
7. Occur between 30-60 degrees North and South
8. Form between 40 60 degrees North and South
Give 4 stages of Mid latitude cyclone
1. Initial stage
Two air mashes do not mix because they separated by front.
A cell of low pressure begins
2 Mature stage
Air moves clockwise in southern hemisphere and anti clockwise in
northern hemisphere.
Polar front forms cold and warm front -cold front lead to cold air, area of
cold front called cold sector
Warm front lead to warm air , area of warm front lead to warm sector
3 Occluded stage or Occlusion stage
cold front overtakes warm front / warm front overtakes cold front.
4. Dissipating stage / decaying stage
System stars to slow down/ dissipate System become weak it ends.
Name conditions which are necessary for the formation of
mid latitude cyclones
Warm ocean waters of at least 78°F (26°C)
At least 5° latitude from the equator;
Low vertical wind shear;
Moisture in the mid-troposphere;
Unstable Conditions ESS5
How to calculate magnetic bearing
Step 1: Determine the true bearing E.g 75°
Step 2: Determine the difference in years between the current year & the year
the Magnetic declination was measured (on topographic map). E.g. 2015 2005
= 10 years
Step 2: Calculate the total magnetic change
E.g 10 years x 2’ West = 20’ West (On the topographic map the change is 2’ West
every year)

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Common Questions about Mid Latitude Cyclones Give seven characteristics of mid latitude cyclone 1. 2. 3. 4. 5. 6. 7. 8. Move west to east It has cold front and warm front Affect south Africa in winter They occur in families or groups It has oval isobars Occur through out the year Occur between 30-60 degrees North and South Form between 40 – 60 degrees North and South Give 4 stages of Mid latitude cyclone 1. Initial stage • Two air mashes do not mix because they separated by front. • A cell of low pressure begins 2 Mature stage • Air moves clockwise in southern hemisphere and anti cl ...
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