Tropical Cyclone Destinations by Month

BA
The Barometer
Published in
2 min readNov 5, 2018

One thing about Tropical Cyclones is that they like to travel. Whether it be from Mindanao to Visayas to Luzon, or to visit different countries, or just staying at sea altogether (#vitaminsea #takemeback), we can’t deny that Tropical Cyclones do move around.

Where they go, however, is very much dependent on the season. Because the Earth is round and is tilted at an angle of approximately 23.5 degrees, it receives different amounts of sunlight.

Obviously not drawn to scale. Also obviously not drawn using Microsoft Paint

Combined with the continuous rotation of the Earth, this influences the formation and movement of Tropical Cyclones.

During the “ber” months, the southern portion of the Earth receives more sunlight compared to other parts of the globe.

https://www.cengage.com/resource_uploads/downloads/0495555061_137179.pdf

And because heat is one of the primary causes of Tropical Cyclone formation, Tropical Cyclones tend to form further south.

To further illustrate, the animation below shows the heatmaps of Tropical Cyclones each month. Take note that as in a previous post, the plotted data only considers Tropical Cyclone points after 1977. Also do remember that heatmaps simply represent the density of track points in a certain area.

I don’t know how to put legends on heatmaps, but I promise that these plots are scaled with respect to each other

While we can’t deny that there are less Tropical Cyclones during the -ber months, they do travel a little bit further south.

Now the next question is “where do stronger Tropical Cyclones go?”

That, my friends, is a story for another day.

Data sources:

  1. World shapefile from Natural Earth
  2. Track data from IBTrACS

Further references/reading:

  1. PAGASA monthly Tropical Cyclone forecast
  2. Expect up to 2 tropical cyclones in November

As an addendum, I plotted all of them side by side below for easier comparison. And yes, I intentionally made the plots small and low res because this are not official and citeable plots hehehe(please see The Barometer’s blog description for a disclaimer).

--

--