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Understanding
Typhoons
Rain, rain go away….NOT!
What is a cyclone?
an area of low
atmospheric pressure
surrounded by a wind
system blowing, in the
northern hemisphere,
in...
Northern
Hemisphere
What is a cyclone?
HIGH
LOW
What is a cyclone?
What is a cyclone?
Counterclockwise
Tropical Cyclone Categories
Category
Maximum Wind Speed
in kph
Tropical Depression 64
Tropical Storm 118
Tropical Cyclone Categories
Category
Maximum Wind Speed
in kph
Tropical Depression 64
Tropical Storm 118
Typhoon 200
Super...
The PAR
Near, PAR, wherever you are. 
Where
is the
PAR?
jpmartizano
Plotting the PAR
Points Latitude Longitude
a 5°N 115°E
b 15°N 115°E
c 21°N 120°E
d 25°N 120°E
e 25°N 135°E
f 5°N 135°Ejpma...
jpmartizano
jpmartizano
Activity 1 Questions
Q1. If a typhoon is located at 15o
N, 138o E, is it within the PAR?
Q2. How about if the ...
jpmartizano
Activity 2 Questions
1. Where did Sendong form?
2. When did Sendong enter the PAR?
3. When did Sendong leave t...
Under what
conditions do
tropical cyclones
form?
Where did the tropical cyclones form? On
land or in the ocean?
What can you say about the temperature of
the bodies of wat...
Which part of the Philippines was hit by
the four tropical cyclones?
In the case of Agaton, Yoyong, and Huaning,
where did...
ZONE of greatest
heating produces
LOW PRESSURE
ZONE of least heating produces
HIGH PRESSURE
ZONE of least heating produces...
jpmartizano
Tropical
Cyclone-
Prone Areas
jpmartizano
Where should a cyclone form
so it would hit the Mindanao
area?
jpmartizano
tp://weather.unisys.com/hurricane/w_pacific/2011H/index.php
Why do cyclones die
out when they reach
land?
The typhoon has affected some
338,000 people across 13 provinces.
43,000 are seeking refuge in
evacuation centres.
On Frid...
Let’s dissect
the cyclone!
Parts of a Cyclone
•Eye
•Eyewall
•Rainbands
Parts of a Cyclone
Eye - lowest
air pressure;
lowest wind
speed;
Parts of a Cyclone
Eyewall –
greatest
wind
speed
Parts of a Cyclone
Rainbands –
bring rain
showers;
pressure
increases as it
goes farther
from the eye
Air pressure in millibars
980 930 990 960
930 mb
960 mb 980 mb
990 mb
Wind Speed in km/h
10 200
10 km/h 200 km/h
Storm Surge
Are You Prepared?
http://gawker.com/5834445/how-to-prepare-for-a-
hurricane
PUBLIC STORM WARNING SIGNALS
A tropical cyclone will
affect the locality
Winds of 30-60 kph
may be expected in
at least 36...
PUBLIC STORM WARNING SIGNALS
A tropical cyclone will
affect the locality
Winds of greater
than 60 kph up to 100
kph may be...
PUBLIC STORM WARNING SIGNALS
A tropical cyclone will
affect the locality
Winds of greater
than 100 kph to 185
kph may be e...
PUBLIC STORM WARNING SIGNALS
The locality is very
likely to be hit
directly by the eye of
the typhoon
Very strong winds
of...
EMERGENCY KIT
bottled water
ready to eat food
flashlight
EMERGENCY KIT
battery-operated radio
Extra batteries
clothes and towels
EMERGENCY KIT
medicines
toiletries
Cell phone
Useful Websites
For added info, YAY!
jpmartizano
jpmartizano
nasa.gov
jpmartizano
noaa.gov
jpmartizano
nhc.noaa.gov
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
Grade 8 Typhoons
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Grade 8 Typhoons

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  • Chinese Taaifung = big wind
  • Chinese Taaifung = big wind
  • Hurakan = god of storms
  • Which is a better source of water vapor, landmasses or oceans? The answer is obvious. But not all parts of the ocean can provide water vapor. Where do you think would evaporation be greatest, near the equator or away from the equator?
  • Thus, tropical cyclones require warm ocean waters to be able to develop. According to scientists, the temperature of ocean water must be 26.5°C or greater. Given this information, do you think typhoons can form in latitudes away from the equator? Why or why not?
  • The reason is because there are large-scale winds that push the tropical cyclones in that direction. This is similar to the way a whirlpool is carried along by a flowing stream.
  • Sendong started out in the Pacific as an area of low pressure. Because it was just a low-pressure area, it was not given a name. Then it intensified into a tropical depression. Again it was not yet given a name because it was still outside the PAR.
  • One thing about tropical cyclones that we should watch out for are the strong winds. Let us now take a peek inside a tropical cyclone and find out in which part would we experience strong winds.
  • Transcript of "Grade 8 Typhoons"

    1. 1. Understanding Typhoons Rain, rain go away….NOT!
    2. 2. What is a cyclone? an area of low atmospheric pressure surrounded by a wind system blowing, in the northern hemisphere, in a counterclockwise direction.
    3. 3. Northern Hemisphere
    4. 4. What is a cyclone? HIGH LOW
    5. 5. What is a cyclone?
    6. 6. What is a cyclone? Counterclockwise
    7. 7. Tropical Cyclone Categories Category Maximum Wind Speed in kph Tropical Depression 64 Tropical Storm 118
    8. 8. Tropical Cyclone Categories Category Maximum Wind Speed in kph Tropical Depression 64 Tropical Storm 118 Typhoon 200 Supertyphoon Greater than 200 OMG END OF THE WORLD!!! 1,000,000,000,000,000, 000
    9. 9. The PAR Near, PAR, wherever you are. 
    10. 10. Where is the PAR? jpmartizano
    11. 11. Plotting the PAR Points Latitude Longitude a 5°N 115°E b 15°N 115°E c 21°N 120°E d 25°N 120°E e 25°N 135°E f 5°N 135°Ejpmartizano
    12. 12. jpmartizano
    13. 13. jpmartizano Activity 1 Questions Q1. If a typhoon is located at 15o N, 138o E, is it within the PAR? Q2. How about if the typhoon is at 19o N, 117o E, is it inside the PAR?
    14. 14. jpmartizano Activity 2 Questions 1. Where did Sendong form? 2. When did Sendong enter the PAR? 3. When did Sendong leave the PAR? 4. In what direction did Sendong move?
    15. 15. Under what conditions do tropical cyclones form?
    16. 16. Where did the tropical cyclones form? On land or in the ocean? What can you say about the temperature of the bodies of water in the vicinity of the Philippines? Is the water warm or cold? In what direction did the tropical cyclones move?
    17. 17. Which part of the Philippines was hit by the four tropical cyclones? In the case of Agaton, Yoyong, and Huaning, where did they die out? Near land or in the middle of the ocean?
    18. 18. ZONE of greatest heating produces LOW PRESSURE ZONE of least heating produces HIGH PRESSURE ZONE of least heating produces HIGH PRESSUREHIGH HIGH LOW
    19. 19. jpmartizano Tropical Cyclone- Prone Areas
    20. 20. jpmartizano Where should a cyclone form so it would hit the Mindanao area?
    21. 21. jpmartizano tp://weather.unisys.com/hurricane/w_pacific/2011H/index.php
    22. 22. Why do cyclones die out when they reach land?
    23. 23. The typhoon has affected some 338,000 people across 13 provinces. 43,000 are seeking refuge in evacuation centres. On Friday 16 December Typhoon Sendong (Washi) hit the southern Philippines island of Mindanao, causing flooding that killed nearly 1,000 people. Typhoon Hits Philippines
    24. 24. Let’s dissect the cyclone!
    25. 25. Parts of a Cyclone •Eye •Eyewall •Rainbands
    26. 26. Parts of a Cyclone Eye - lowest air pressure; lowest wind speed;
    27. 27. Parts of a Cyclone Eyewall – greatest wind speed
    28. 28. Parts of a Cyclone Rainbands – bring rain showers; pressure increases as it goes farther from the eye
    29. 29. Air pressure in millibars 980 930 990 960 930 mb 960 mb 980 mb 990 mb
    30. 30. Wind Speed in km/h 10 200 10 km/h 200 km/h
    31. 31. Storm Surge
    32. 32. Are You Prepared? http://gawker.com/5834445/how-to-prepare-for-a- hurricane
    33. 33. PUBLIC STORM WARNING SIGNALS A tropical cyclone will affect the locality Winds of 30-60 kph may be expected in at least 36 hours or irregular rains may be expected within 36 hours PSWS #1
    34. 34. PUBLIC STORM WARNING SIGNALS A tropical cyclone will affect the locality Winds of greater than 60 kph up to 100 kph may be expected in at least 24 hours PSWS #2
    35. 35. PUBLIC STORM WARNING SIGNALS A tropical cyclone will affect the locality Winds of greater than 100 kph to 185 kph may be expected in at least 18 hours PSWS #3
    36. 36. PUBLIC STORM WARNING SIGNALS The locality is very likely to be hit directly by the eye of the typhoon Very strong winds of more than 185 kph may be expected in at least 12 hours PSWS #4
    37. 37. EMERGENCY KIT bottled water ready to eat food flashlight
    38. 38. EMERGENCY KIT battery-operated radio Extra batteries clothes and towels
    39. 39. EMERGENCY KIT medicines toiletries Cell phone
    40. 40. Useful Websites For added info, YAY!
    41. 41. jpmartizano
    42. 42. jpmartizano nasa.gov
    43. 43. jpmartizano noaa.gov
    44. 44. jpmartizano nhc.noaa.gov
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