Home
Weather New York
WeatherRadar
RainRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
Career
    Home / Weather News /

    Why tropical wave emerge from Africa during this time of the year?

06:15 PM
August 24, 2022

Why from Africa?
Aug & Sept.: Tropical wave parade

Tropical waves emerging from Africa embedded with Saharan dust in June 2022.
© NOAA

We know that the areas of possible formation shift as hurricane season progresses. While the beginning and end of the season tend to have formation closer to home, it is during the peak of the season that we shift our eyes farther east, to Africa. But why? What makes the continent produce these tropical start-ups?

To put it in basic terms, it is all about the water cycle. The rain falls, moistens the jungle, the heat creates more water vapor, and more storms are created. The winds carry these clusters of storms out of Africa over the Atlantic to the west and it is here that they can form as tropical cyclones eventually threatening countries.

Track tropical waves in our interactive WeatherRadar.

Tropical waves are highly dependent on the African monsoon. The more rainfall in these areas, the more likely it is that there will be more waves leaving the continent.

Between August and September, the wind shear or the changing winds with height, also tend to relax. With little shear, tropical waves can continue their natural cycle and strengthen.

Of course, wind shear doesn't always relax completely because it depends on other atmospheric patterns like the El Niño Southern Oscillation. But, if La Niña is present, we can guarantee that there is a greater probability that more systems will form because the winds are calmer than usual.

Finally, there is the fuel to tropical systems - the sea surface temperatures. We have reached the end of summer and there has been lots of heat collected on the sea surface. So, there is all this fuel just sitting there waiting to feed a system.

The next time you see waves coming from far, far away, know that there are many ingredients that come together to prepare the perfect 'recipe.' We always hope it's not perfect. The advantage will always be that we have time to watch them and prepare in advance.

Irene Sans
More on the topic
Meteorological summer is here!. Bye, spring!. . . Monday, June 1, 2026
Monday, June 1, 2026

Bye, spring!

Meteorological summer is here!
Heat wave setting records across Europe. London breaks May record. . . Tuesday, May 26, 2026
European heat wave
Tuesday, May 26, 2026

London breaks May record

Heat wave setting records across Europe
El Niño is gaining momentum. Temperature records?. . . Thursday, May 7, 2026
The image shows the central Pacific in a computer model. A striking feature is the ocean coloured red, which indicates very warm seawater.
Thursday, May 7, 2026

Temperature records?

El Niño is gaining momentum
All weather news
This might also interest you
Multi-day severe threat unleashed. Midwest to Northeast. . . Wednesday, June 10, 2026
A multi-day severe threat targets the Midwest today, with storms impacting the Northeast on Thursday.
Wednesday, June 10, 2026

Midwest to Northeast

Multi-day severe threat unleashed
Understanding the feels like temperature. Advanced heat measurement. . . Sunday, June 14, 2026
feels like temperature
Sunday, June 14, 2026

Advanced heat measurement

Understanding the feels like temperature
Thick fog blankets the Great Lakes. Upper Midwest. . . Wednesday, June 10, 2026
Wednesday, June 10, 2026

Upper Midwest

Thick fog blankets the Great Lakes
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy policy Legal info Accessibility statement

Services

Uploader

Socials

instagramfacebookthreadslinkList