How do thunderstorms start

Landmasses, therefore, experience more storms than the oceans and thunderstorms are also more frequent in tropical areas than the higher latitudes.

What causes thunder and lightning? You might also like. Read more. A convergence line is a band of cloud that remains fairly stationary and can produce large amounts of rain across a relatively small area. Yes, you can use thunder to tell how far away a storm is. Next time you see a storm, count the number of seconds between when you see the lightning and hear the thunder.

Take the number of seconds and divide by 5 and that will tell you how far away the storm is in miles. For example: If you counted 10 seconds between the lightning and the thunder, the lightning is 2 miles away!

What is hail? Hail is created when small water droplets are caught in the updraft of a thunderstorm. These water droplets are lifted higher and higher into the sky until they freeze into ice. Once they become heavy, they will start to fall. If the smaller hailstones get caught in the updraft again, they will get more water on them and get lifted higher in the sky and get bigger.

Once they get lifted again, they freeze and fall. This happens over and over again until the hailstone is too heavy and then falls to the ground.

What causes the wind to blow? As the sun warms the Earth's surface, the atmosphere warms too. Some parts of the Earth receive direct rays from the sun all year and are always warm. Other places receive indirect rays, so the climate is colder. Warm air, which weighs less than cold air, rises. Then cool air moves in and replaces the rising warm air.

This movement of air is what makes the wind blow. What is a gust front? A gust front is the leading edge of the downdraft from a thunderstorm. It is usually marked by gusty cool winds, and sometimes blowing dust. You will feel the wind from the gust front before it starts to rain. If the air is sufficiently moist, then the moisture condenses to become a cumulus cloud.

Know the Facts The typical thunderstorm is 15 miles in diameter and lasts an average of 30 minutes. Thunderstorms happen in every state and every thunderstorm has lightning. Click Here to see if there are any active warnings in your area. Look for darkening skies, flashes of lightning, or increasing winds.

The Short Answer:. All thunderstorms need the same ingredients: moisture, unstable air and lift. Moisture usually comes from oceans. Unstable air forms when warm, moist air is near the ground and cold, dry air is above. Another way to classify thunderstorms is by the location where they form and the reason that air rises. The pictures below describe three different ways that lifting of air can begin: due to a mountain or hillside, within an air mass, or at a storm front.

Orographic thunderstorms are caused by air that is forced up by a mountain or hillside. Air mass thunderstorms are the result of localized convection in an unstable air mass. Frontal thunderstorms occur along boundaries of weather fronts e.