Magnitude And Frequency Of Revolving Storms Flashcards
1
Q
How are tropical revolving storms measured
A
On the Saffir-Simpson scale
2
Q
What is the Saffir-Simpson scale
A
It is based on five levels based upon central pressure, wind speed, storm surge and damage potential
3
Q
What would scale 5 on the Saffir-Simpson scale
A
- central pressure at 920mb or below
- wind speed of 69 ms-1 or greater
- storm surge at 5.5 m or greater
- damage potential that refers to complete roof failure of many buildings with major damage to lower floors
4
Q
What is the average lifespan on a tropical storm
A
7-14 days
5
Q
How many tropical storms occur per year averagely
A
70-75
6
Q
How many of the 70-75 tropical storms that occur per year, will intensify to become tropical revolving storms
A
About 50
