Why Hawaii and reunion island are the locations of rainfall record?

Hawaii and Réunion Island are indeed well-known for their exceptional rainfall records. Here are the reasons why these two locations receive such heavy rainfall:

1. Geographic Location:

Both Hawaii and Réunion Island are located in the tropics, near the equator, where the warm ocean waters provide abundant moisture and favorable conditions for rainfall formation.

2. Trade Winds:

Hawaii and Réunion Island lie in the path of the prevailing trade winds, which carry warm, moist air from the ocean to the islands. As the air encounters the mountainous terrain, it rises, cools, condenses, and forms clouds, resulting in heavy rainfall.

3. Orographic Lift:

The mountainous terrains of Hawaii and Réunion Island contribute significantly to the rainfall patterns. As the moist air from the trade winds encounters the mountain slopes, it is forced to ascend. This orographic lift causes the air to cool further, leading to cloud formation and heavy rainfall on the windward (facing the trade winds) sides of the islands.

4. Tropical Storms and Hurricanes:

Hawaii and Réunion Island are frequently affected by tropical cyclones, such as hurricanes and typhoons. These storms bring torrential rainfall, high winds, and extreme weather conditions, which can contribute to record-breaking rainfall events.

5. Convergence Zones:

Both Hawaii and Réunion Island are located near areas where the trade winds converge, creating zones of concentrated moisture and instability. These convergence zones often lead to the development of thunderstorms and heavy rainfall.

6. Sea Surface Temperatures:

The warm sea surface temperatures surrounding Hawaii and Réunion Island provide ample moisture for the atmosphere, enhancing the potential for rainfall formation.

Due to these factors, Hawaii and Réunion Island experience some of the highest annual rainfall totals in the world. Hawaii holds the record for the wettest place on Earth, with Mount Waiʻaleʻale on the island of Kauai receiving an average of over 460 inches (11,684 mm) of rain annually. Réunion Island also boasts exceptionally high rainfall, with the town of Cilaos receiving an average of around 180 inches (4,600 mm) of rain per year.