Question

Why is heavy rain fall dangerous explain?

Answer 1

WHAT CAUSES HEAVY RAIN?

Rain occurs when the water vapor "held" in warm, moist air condenses into liquid water and falls. For heavy rain, then, the amount of moisture in the air mass must be disproportionately large compared to its size. There are several weather events where this is typical, such as in cold fronts, tropical storms and hurricanes, monsoons. Rainy weather patterns like El Niño and the Pacific coast's "Pineapple Express" are also moisture trains. Global warming, too, is thought to contribute to heavier precipitation events, since in a warmer world, the air will be able to hold more moisture to feed soaking rains.

TORRENTIAL RAIN DANGERS

Heavy rain can trigger any one or more of the following deadly events:

 Runoff. If heavy rains arrive more quickly than the ground can absorb the water, you get runoff -- stormwater that "runs off" the land instead of seeping into the ground. Runoff can carry pollutants (like pesticides, oil, and yard waste) into nearby creeks, rivers, and lakes.Flooding & flash flooding. If enough rain falls into rivers and other bodies of water it can cause their water levels to rise and overflow onto normally dry land.Mudslides. If rain is record-breaking (typically more rain in a few days than is normal over a month or year) the ground and soil can actually liquify and carry unsecured objects, people, and even buildings away in debris flows. This is exacerbated along hillsides and slopes since the ground there is more easily eroded away. Here in the U.S., mudslides are common in Southern California. They're also common in Europe and Asia, especially India, Bangladesh, and Pakistan where they often lead to death tolls in the thousands.

Answer 2

1)it causes damage to crops and manmade resources
2)it results in flood and landslide
3)if there is no proper drainage the place will be filled with waste
4)when water get deposits here and there, mosquitoes will grow and cause diseases