Humankind has not understood the basic design of nature and the world around him. We know now that lightning is caused by static electricity generated by friction from the innumerable water and ice particles in a thundercloud. But that understanding took hundreds, even thousands of years to fully realized. Before we had this answer, we still had the question, "What makes lightning?" Before the myth of myths and legends.
SEE ALSO: 10 Historical Events With Hilarious Forgotten Details
10 Tsunami From A Sea Spirit
The Moken, a People living on a few scattered islands near the coasts of Myanmar and Thailand. Katoy Oken sends forth "monster waves" (tsunamis to us) to purify the people spiritually and physically. The people felt the earth shake, knocking coconuts from the trees. They knew this what the 'wave that eats people', awoken and sent by Katoy Oken. They collected the falling coconuts and went out to sea, hopeful that the man eating wave would go to the island and ignore the boats. Shortly thereafter the boats are slightly jostled and a village elder calls out to his people to look to shore. The water had retreated from the beach. What followed what a wave that reached as the tops of the coconut trees. Katoy Oken's wave was purified the island, but no Moken were consumed.
The Legend Survivor in Moken storytelling for hundreds of years. In 2004 a magnitude 8.9 earthquake triggered a massive tsunami that reached across multiple countries. The waves killed 175,000 people missing in the region and another 125,000 went missing, presumed dead. One island of about 200 Moken was right in the wave's path. When they saw the water from the beach, Katoy Oken and his people eating wave. Of the 200 Moken there, 2004, Tsunami. 
9 Namazu Shakes The Earth
In Japanese mythology the Namazu is a catfish so giant he causes earthquakes with his tail. Originally he acted as a premonition of danger, warning people before a flood or heavy rain or other damaging event. But as time went on the Namazu became one of the yo-kai, a creature of misfortune and disaster. Kashima under a colossal capstone, but Kashima is not always diligent about his duties or grows tired and Namazu says to himself. His uncontrolled tail causes earthquakes and tsunami.
Overtime Namazu became known as a punishment for human greed. His earthquakes destroyed the properties of the rich, forcing a redistribution of wealth. In more modern twist of the legend, Namazu is shown as being a force of nature and more of a civil servant who would rather fulfill his responsibility to help in disaster relief.  19659003] 8 A God's Baby Trapped Underground
In the Maori creation of the Sky Father Ranginui and the Earth Mother Papatuanuku were separated from the earth and the sky. Still, their separation grieved them greatly and their children, on seeing that, they decided to go back and forth. However, the youngest of her children, Ruaumoko, was silently suckling on his mother's breast when his older siblings turned her face to the earth and he was trapped underneath forth.
Now in the dark and the cold, Ruaumoko was given fire to stay warm and became the patron deity of volcanoes and earthquakes. When he wakes, he causes terrible eruptions and must be soothed back to sleep by the lullaby of his mother. 
7 Battling Aztec Gods End The World
In the Aztec creation myth the duel god Ometecuhtli and Omecihuatl, who was born from nothing and because of what he was. These children represent the four cardinal directions: Huizilopochtli, Quetzalcoatl, Tezcatlipoca and Xipe Totec. These children then created the world. They realized that the world would need energy to sustain it. Instead of one of them would have to become the sun. Which of the suns, a natural disaster would strike the world and a new era would begin.
The first sun was Tezcatlipoca, but he was knocked out of his place by Quetzalcoatl and in retaliation Jaguars were sent to eat the inhabitants of the world. During the second sun their bickering continued and Tezcatlipoca turned the newly created human into monkeys, but Quetzalcoatl sent hurricanes and floods to wipe them out. Tialoc's wife Tialoc and human tialoc's wife Tialoc's wife turns into turkeys, dogs, and butterflies. Quetzalcoatl tried to solve these new life-forms by raining fire and ash down on them. The forth's sun was Tialoc's sister, but Quetzalcoatl and Tezcatipoca were jealous of her. This time they turned off the population of a big flood. The fifth and current sun, the god Nanahuatzin, is our age and it is said to be in an earthquake. 
6 A Vengeful Earth Mother
Across the countries of Colombia, Venezuela, Ecuador, Peru and Bolivia live an indigenous people who revere The Earth Mother or Pachamama. In ancient Incan mythology she is a fertility god, a personification of nature, that helps to nourish and protect animals and plants. Lilama fetuses, rice, or peanuts buried.
Pachamama is also said to be responsible for earthquakes, landslides, and lightning which she employs in her anger. These are directed at those who fail to care for the earth or its creatures in a child way. 
5 Freedom Fighter Trapped Between Mountains
Bernardo Carpio is a mythological figure from the Philippines that is sometimes portrayed as a giant, but other times is a normal human with abnormal strength. In the tale Bernardo is a kindhearted and courageous person who joins the resistance movement. Which resistance and when it depends on the time is being told, which is mostly remembered through oral tradition, but the common version has him joining the Spanish. His joining the resistance is a huge boon to their cause, because Bernardo posses superhuman strength. As a child pulled nails from the floorboard with his bare hands and felled trees with his father while hunting.
Bernardo between Mt. Pamitinan and Mt. Binacayan. Eventually a local shaman uses his powers to trap. Bernardo's immense strength, but he refuses to give up. Still trapped to this day, Bernardo keeps trying on himself at Earthquake in the region. 
4 Kagutsuchi's Corpse Made Volcanoes
A Shinto god or Kami, Kagutsuchi was born of the creator gods Izanami and Izanagi. How to fire a kami, Kagutsuchi's birth killed his mother in overwhelming flame and heat and she was sent to Yomi, the land of darkness. Izanagi was grateful and went to Yomi to retrieve his dead wife, but Izanami could never leave. She had already eaten food in Yomi, which trapped her there. Izanami was rotting and riddled with maggots. She lashed out at her husband and he fled Yomi. Once outside he took revenge on his child and had robbed him of his wife and slipped Kagutsuchi to pieces.
From Kagutshchi's body and blood dripping from his father's sword other gods came into existence. Among them Takemikazuchi-no-kami and Futsunushi-no-kami, famous swordsmen and Kuraokami-no-kami a rain god. From his body parts so arose mountain gods, namely volcanoes. Kagutsuchi did in life. 
3 Plagues from "The Crouching Darkness"
In Ireland, before the introduction of Christianity, worship of a pantheon of gods was more widespread. Crom Cruach means "crouching darkness" or "bent gloom". One description of his worship paints the picture of a terrible and feared god who required human sacrifices. The Metrical Dindshenchas, Crom Cruach:
He was their god, the wizened Bent One with many glooms;
For him ingloriously they slew their wretched firstborn with much weeping and distress, to pour out their blood around the Bent One of the hill.
] Milk and corn they are in a hurry for their whole progeny:
The stirred evil, they beat the bruised bodies: wailing to the demon who had enslaved them they shed showers of tears, prostrate their pouring.
Though morbid in his worship rites, Crom Cruach is sometimes considered a fertility god. If his worshipers failed to please him or failed to offer the sacrifices to him he thought of the source of poor harvests, blights, and plagues. In one story, the worshipers of Crom Cruach brought along an idol of him and insisted on sacrifices from the Gael people, their firstborns Crom Cruach's worshipers insisted on being bashed against the idol as a sacrifice otherwise Crom Cruach would have put on a pestilence on their behalf harvest and blight their livestock. 
2 The Thunderbird is a reoccurring mythological figure in multiple Native American cultures. Thunderstorms, rain, and gales, but each tribe had their own variations of the myth.
To the Winnebago people the Thunderbird what not singular, but a species and many could be found soaring the skies in their legends , but this species had the ability to shape shift into human warriors. The Passamaquoddy people also believed it was a shapeshifter who could control lightning, but would never use those powers against humans, only villains. The Quillayute people thought it was a benevolent helper sent by The Great Spirit to help after natural disasters. One of their stories depicting the Thunderbird at a time when the Quillayute were desperate for food. It arrived from a thunderstorm of its own creation carrying a whale. 
1 Senseless Cause of Disease and Pestilence
Many gods were worshiped in Ancient Mesopotamia. They believed that the gods and humans were co-workers in maintaining the balance and harmony of the world, but if both men and gods valued peace than why did humans suffer? The Babylonian city of Kutha invented a god that had an uncontrolled temper. His name is Nergal or Erra. Originally those names represented two different gods, but over time they became so closely linked that they began to both refer to the same mythological figure.
Nergal is a god of calamity who senselessly lashes out, not to punish a sin or correct to injustice, but only because of his ill temper. In his wrath he was blamed for diseases, plagues, and pestilence, but would also be inflicting senseless death on the battlefield as well.
In one story Nergal, for no reason in particular, decides to attack Babylon, but the city is defended by another god named Marduk. Marduk is dressed. Nergal arrives, pretending to be just visiting the city. Marduk is embarrassed and says he just does not have the time to get new clothes. Marduk has the time to better outfit himself. When Marduk Leaves, Nergal inflicts his wrath on the city-killing people indiscriminately in the streets.
The child of god he is, "When I get angry, I break things. "