Hurricanes

Question 1

What type of low is a hurricane?

Answer 1

Thermal/Barotropic Low

Question 2

Where hurricanes start??

Answer 2

Over tropical oceans between 5-15 deg of equator

Question 3

Do hurricanes start within 5 deg over equator??

Why?

Answer 3

Rarely due to insufficient Coriolis force.

Question 4

Highest frequency of hurricanes ?

Answer 4

NW pacific Japan, korea etc

Question 5

What does a hurricanes need to develop?

Answer 5

Sea temp +27
Over ocean
Unstable conditions + lifting force from disturbances

Question 6

Thunderstorms in hurricane pushed in to line by??

Answer 6

Upper winds

Question 7

Wind speed? In outer ring

Answer 7

In excess of150knots

Question 8

Formative stage?

Answer 8

Depression deepens wind speed increases above gale force (34knots)

Question 9

Immature Stage?

Answer 9

Pressure falls below 1000hpa winds reach hurricane speeds, 65knots

Question 10

Mature stage?

Answer 10

Pressure is steady

Question 11

Dissipating stage?

Answer 11

Pressure rises

Question 12

Hurricanes are frequent in NW Pacific due to?

what are they known as??

Answer 12

Long sea track of the trade winds over warm water (humidity)
Typhoons

Question 13

hurricanes calssified by the?

Answer 13

Average one minute wind speed

Question 14

Most destructive part

Answer 14

Front left wind + movement of the system

Question 15

Direction of movent

Answer 15

Westerly 10knots and then towards poles at 20 knots

Question 16

Times of year? 
North Africa  
Indian Ocean
South China Seas
Australia

Answer 16

May to Nov
Dec - April
July - October

Question 17

Tornadoes diameter and movement speed

and season

Answer 17

100 - 150 m diameter move at 20 - 40 Knots

America March - June

Question 18

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