PPT for quarter 2 week 5

1. HOW TO
TRACK
A TYPHOON ?

2. The threat of tropical cyclones nowadays is
far reaching. Year after year, our civilization is
affected by these howlers ranging from
hurricanes,
typhoons, cyclones and storms which belong
to the
family of tropical cyclones. This wrath of
nature kills
hundreds or even thousands of people,
damaging
many livelihood and properties.

3. Now the question is: "How can we
avoid
them?" The answer to this is through
awareness and understanding.
Without this
knowledge, the loss of lives will
continue to
be a risk factor in the evolution of
civilization.

4. Map of Earth showing lines of latitude (horizontally) and longitude (vertically

5. Latitude
When looking at a map, latitude lines run
horizontally.
Latitude lines are also known as parallels since
they are parallel and are an equal distant from
each other.
Each degree of latitude is approximately 69 miles
(111 km) apart; there is a variation due to the fact
that the earth is not a perfect sphere but an oblate
ellipsoid (slightly egg-shaped).

6. To remember latitude, imagine them as the
horizontal rungs of a ladder ("ladder-tude").
Degrees latitude are numbered from 0° to 90°
north and south. Zero degrees is the equator, the
imaginary line which divides our planet into the
northern and southern hemispheres. 90° north is
the North Pole and 90° south is the South Pole

7. Longitude
The vertical longitude lines are also known as
meridians. They converge at the poles and are
widest at the equator (about 69 miles or 111 km
apart). Zero degrees longitude is located at
Greenwich, England (0°). The degrees continue 180°
east and 180° west where they meet and form the
International Date Line in the Pacific Ocean.
Greenwich, the site of the British Royal Greenwich
Observatory, was established as the site of the
Prime Meridian by an international conference in
1884.

8. How Latitude and Longitude Work
Together
To precisely locate points on the earth's surface,
degrees longitude and latitude have been divided
into minutes (') and seconds ("). There are 60
minutes in each degree. Each minute is divided into
60 seconds. Seconds can be further divided into
tenths, hundredths, or even thousandths. For
example, the U.S. Capitol is located at 38°53'23"N ,
77°00'27"W (38 degrees, 53 minutes, and 23
seconds north of the equator and 77 degrees, no
minutes and 27 seconds west of the meridian passing
through Greenwich, England).

9. The Compass

10. The four cardinal directions correspond to the following degrees of a
compass:
North (N): 0° = 360°
East (E): 90°
South (S): 180°
West (W): 270°
An ordinal, or intercardinal, or intermediate, direction is one of the four
intermediate compass directions located halfway between the cardinal
directions.
Northeast (NE), 45°, halfway between north and east, is the
opposite of southwest.
Southeast (SE), 135°, halfway between south and east, is the
opposite of northwest.
Southwest (SW), 225°, halfway between south and west, is
the opposite of northeast.
Northwest (NW), 315°, halfway between north and west, is
the opposite of southeast.

11. We welcome you to our special
section: A Guide on How to
Track Tropical Cyclones. This
simple tool will help you know
and understand where a tropical
storm or a typhoon is going to
strike. Below is a step-by-step
procedure on how to do it:

13. Exercise

14.  Plot the coordinates by finding out the
exact square where Rosing is located. For
this exercise, you need the first set of
latitude and longitude - 14.4 north and
125.9 east. Now, look along the borders
of your tracking chart the coordinate
numbers 14 north and 125 east. You must
converge 14 and 125 in one point, which
will be 14.0 and 125.0.

15. 14*
125*

16. 14*
125*

19. Having located the coordinates,
your next task is to pinpoint the
precise location. Calculate 14.4
and 125.9 by dividing the
coordinate box into 10 equal
parts.

21. Let’s continue the tracking
of Typhoon Rosing

22. Start plotting the present storm. For example: Super
Typhoon Rosing (Angela) of November 02, 1995.

23. D-300 kms.
T/I-15.78 hrs

24. D-300 kms.
T/I-15.78 hrs
D-210kms.
T/I-11 hrs

25. D-210kms.
T/I-11 hrs
D-300 kms.
T/I-15.78hrs
D-140kms.
T/I-9.3 hrs hrs

26. D-300 kms.
T/I-15.78 hrs
D-210kms.
T/I-11 hrs
D-140 kms.
T/I-9.3 hrs hrs
D-30 kms.
T/I-1.76hrs

28. Here is a sample of a finished
tracking chart of Rosing taken
from the example data
information in Step 2.

30. Make sure to make a tabular
form or your own storm logs
on your computer or on a
piece of paper for you to jot
down the present data info
and of course the future
data.

31. After plotting the exact position of
the storm, you must also plot the
forecast positions as well as the past
positions of the storm - for you to
know where and when the storm will
strike. Don't forget to add the date,
wind speed and the line connecting
the points.

32. Upon knowing where the storm is, you
can now share the information to
anybody in your community. Who
knows, you can be a hero someday by
saving lives. Now, in order to master
the plotting of these tropical cyclones
you need to repeat from Step 1
again.

33.  Always remember, "practice makes perfect!"
 Good luck!

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infringement intended.