sequence of natural events n before: n atmospheric pressure starts to fall and winds increase in...
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Sequence of Natural EventsSequence of Natural Events
Before:Before: Atmospheric Atmospheric
pressure starts to pressure starts to fall and winds fall and winds increase in strengthincrease in strength
During: 1-2 daysDuring: 1-2 days
Pressure falls Pressure falls rapidlyrapidly
During: 1-2 daysDuring: 1-2 days
Winds increase to Winds increase to hurricane force, and hurricane force, and rain becomes rain becomes torrential. Seas torrential. Seas become extremely become extremely rough.rough.
Suction effect may Suction effect may cause cause storm surgestorm surge
During:1-2 daysDuring:1-2 days
On high islands, On high islands, rivers flood and rivers flood and landslides erodelandslides erode
The worst of the The worst of the storm occur just storm occur just before the eye before the eye passes by. Then for passes by. Then for a short time the wind a short time the wind calms and the skies calms and the skies clearclear
During:1-2 daysDuring:1-2 days
The eye of the The eye of the stormstorm
During:1-2 daysDuring:1-2 days
When the second When the second half of the cyclone half of the cyclone strikes, the violent strikes, the violent conditions return but conditions return but the wind comes from the wind comes from the opposite the opposite directiondirection
During:1-2 daysDuring:1-2 days
Atmospheric pressure rises rapidly and Atmospheric pressure rises rapidly and the cyclone moves awaythe cyclone moves away
During: 2-3 daysDuring: 2-3 days
The processThe process
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After: 2-3 daysAfter: 2-3 days
As the cyclone As the cyclone moves further away, moves further away, atmospheric atmospheric pressure gets back pressure gets back to normal and fine to normal and fine weather returnsweather returns
Effects on the natural Effects on the natural environmentenvironment
Before: 2-3 daysBefore: 2-3 days Winds picks up Winds picks up
speed, clouds build speed, clouds build up and rain starts.up and rain starts.
During: 1-2 daysDuring: 1-2 days
On high and low On high and low islands, wind strips islands, wind strips vegetation of leaves vegetation of leaves and fruit.and fruit.
During: 1-2 daysDuring: 1-2 days
Coastal vegetation Coastal vegetation is burned by salt is burned by salt sprayspray
Coastal erosion Coastal erosion strips beaches of strips beaches of sand. Live coral sand. Live coral reefs are damaged.reefs are damaged.
After:After:
Seawater floods Seawater floods recede, but soils are recede, but soils are damaged by salt damaged by salt ((salinisationsalinisation))
Nature gradually Nature gradually repairs the damage.repairs the damage.