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Flashcards in tropical cyclones Deck (14):
1

What is a Tropical Cyclone

  • Rapid rotating storm
  • Low pressure centre
  • Strong winds
  • Thunderstorms that bring heavy rain

2

What other names do we use for a Tropical Cyclone

Depending on Strength and location it is called

  1. Hurricane
  2. Typhoon
  3. Severe Cyclonic Storms

3

What is a Hurricane and where?

It is a Tropical Cyclone that starts in the Atlantic Ocean and in North-East Pacific Ocean

4

What is a Typhoon and where?

Starts in North West Pacific Ocean

5

Where do we get Severe Cyclonic Storms / Tropical Cyclones

South Pacific and Indian Ocean

6

Name Characteristics of Tropical Cyclo

Develop over ocean near Equator Warm air over

7

Discuss the EYE and SURROUNDING area of the Tropical Cyclone

(Long Q together with previous cards)

Eye

  1. centre of Cyclone
  2. Calm, Cloudless,
  3. wide as 35 - 50 km
  4. Pressure below 1000 hPa

Surrounding area -

  1. Storms, winds of 120 - 280 Km/h for hours or days
  2. move slowly forward 15-20 km/h
  3. Subside when reaching land or cool water
  4. Tidal waves along coast, lots of damage and torrential rain

8

Name the biggest cyclone to hit SA

DOMOINA

- 25 January 1984 came in near Maputo

9

What happened / consequences or effects

  1. Storms with high winds and rain
  2. 540 mm measured in 24 hours
  3. Rivers flooded, bridges washed away that made rescue attempt difficult
  4. Villages near rivers destroyed
  5. Vegetation near rivers washed away
  6. 150 milj Rand damages to sugar farms
  7. 200 people died people and
  8. animals washed out to sea
  9. Diseases spread by water caused more deaths

10

Why do Cyclones get woman names

Because they are unpredictable and changeable

11

Name the Cyclone that were named after a man

Hugo in US east coast 1989

12

Safety measures to follow are before storm

  • Keep radio and TV on for any weather updates

Before the flood:

  • Fill fuel tanks and check battery and tires
  • Build up drinking water
  • Get food that not cook or freeze = canned food
  • Have torch, first aid kit, fire extinguisher, battery radio
  • Board all windows Evacuate low lying areas

13

Safety measures during storm

DURING THE STORM:

Stay indoors

Listen to radio for weather update

Listen for community help like Red Cross

14

Safety measures after storm

AFTER THE STORM:

  • Stay of roads
  • Damaged power, water and sewerage line to be reported
  • Care-full of fire and falling objects
  • Use telephone only for emergency