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Tornadoes
A tornado or twister is a violent, rotating column of air which typically has a speed ranging from 177 km/h to over 480 km/h. This devastating windstorm is usually characterized by its funnel-shaped cloud that extends toward the ground.
8,901 Questions
During what season do tornadoes occur?
Tornadoes usually occur in spring and early summer while hurricanes usually occur in summer and early fall.
However, tornadoes can occur at any time of year, and out of season hurricanes have occurred as well.
What is the name to a tornado that only forms over open water?
Yes. A tornado on water is called a waterspout.
Why do tornadoes often look black or grey?
The visible funnel of a tornado is composed of water droplets like an ordinary cloud, and so usually is the same color as the clouds that it extends from.
Not all tornadoes are gray, however. Depending on lighting some may appear white or black. Tornadoes can also be colored by soil that they lift and become gray, black, brown, tan, or even red.
Which government agency issues tornado watches and warnings?
In the United States, tornado warnings are issued by local offices of the National Weather Service. Tornado watches are issued by the Storm Prediction Center in Norman, Oklahoma, a subdivision of the National Weather Service.
What do you do if there is tornado or thunderstorm?
There are a few ways to protect yourself. One is do not get low down in a dicth. Why? Because it might get flooded. You don't want to drown, do you? Not getting that low, try not to be the tallest thing around. Lightning will strike the tallest thing on the ground. A car is a safe place to be because of its big, rubber tires. Do not talk on the phone or be on the computer because it could shock you if lightning strikes really nearby. Do not shower or bathe. These are just a few things to keep you safe.
Is a tornado stronger than a hurricane?
They vary widely in strength and there is actually a scale used for rating tornadoes. The Enhanced Fujita scale rates the strength of a tornado using damage to estimate its wind speed. The scale has six levels from EF0 at the weakest to EF5 at the strongest.
An EF0 tornado has winds of 65 to 85 mph and causes minor damage or none at all. An EF5 has winds over 200 mph and winds in excess of 300 mph have occurred. An EF5 tornado can completely obliterate just about any structure.
The tornadoes that cause the most damage are those rated EF3 or higher, with winds in excess of 135 mph. The majority of tornadoes, though, are rated EF0 or EF1, with winds up to 110 mph.
How do tornadoes hurricanes and thunderstorms form?
They all form by different mechanisms.
Volcanoes: Formation of volcanoes starts when hot rock in the mantle melts and rises through Earth's crust, erupting at the surface to form volcanoes. There are three main ways of melting the rock. The first occurs when a tectonic plate made of oceanic crust collides with another plate and is forced down into the mantle. Water trapped in the plate seeps out, lowering the melting point of the hot mantle rocks. The second occurs where two plates pull apart. At such a point, the crust is thin, which puts less pressure on the upper mantle, lowering the melting point. Finally, in some areas called hot spot, extra hot mantle material wells up to just under the crust, and some of it melts.
Earthquakes: Earthquakes are primarily a release of tension in Earth's crust. Most earthquakes occur at or near the boundaries between Earth's tectonic plates. In these areas, the plates move into, away from, or past each other. Areas along the boundary snag and build up tension as the plates continue to move. When the plates slip, in what is called a rupture, the tension is released in the form of an Earthquake. This can occasionally happen at smaller faults away from plate boundaries.
Tsunamis: Most tsunamis result from underwater earthquakes, particularly megathrust earthquakes. In this scenario, a plate of oceanic crust slides under another plate in what is called subduction. Tension builds up between the plates, usually over a few centuries. When the tension is releases and the plates slip into a more stable position, there is vertical movement of the seafloor. This displaces the water overhead, generating a series of long-period waves. Some tsunamis result from landslides that either occur underwater or into water. In either case, the large movement of rock or sediment displaces a large volume of water, which generates waves.
Hurricanes: A hurricane, or generically a tropical cyclone, generally starts out as an area of low barometric pressure, showers, and thunderstorms called a tropical disturbance. As the disturbance moves out over warm, ocean water, the warm, humid air fuels the thunderstorms, causing them to grow stronger. The strengthening storms lower the pressure, causing the system to draw in more warm, moist air. This cycle reinforces itself and the system strengthens. As this happens, the Coriolis effect, a consequence of Earth's spin, causes the system to begin rotating. This causes it to organize, allowing it to draw in air more efficiently. Once the system develops a well-defined circulation, it is dubbed a tropical depression. When winds reach at least 39 mph it becomes a tropical storm. When they reach 74 mph it becomes a hurricane.
Tornadoes: The formation of tornadoes starts with the formation of thunderstorms. The thunderstorms that produce tornadoes usually develop where a cool and/or dry air mass plows into a warm, moist air mass. If there is enough energy in the atmosphere, these storms will become very strong. The next ingredient is wind shear, or differences in wind speed and direction with altitude. This does two things for the storm. First it affects circulation within the storm such that it is no longer choked by its own rain-cooled air, which commonly weakens and eventually kills thunderstorms. Second, in some cases it sets a thunderstorm rotating, turning it into a supercell. Rotation in a supercell is focused in an area called the mesocyclone. Under the right conditions, a downdraft may wrap around a portion of the mesocyclone, tightening and intensifying it to form a tornado.
How does a tornado affect the atmosphere?
- The first and major effect comes from the damaging winds. Flying debris also causes damage to trees, habitats, and can affect sewerage and sanitation systems.
- The sea level rises 10-20 feet or more. The surge of water that can come ashore with a storm causes an incredible amount of damage.
- Once cyclones make landfall, they often degenerate into a rain depression, which can bring flooding rains to a region. Not all cyclones bring heavy rain.
- Cyclonic winds can cause erosion, as well as defoliation of forests.
See related question below
What do people in the US call tornadoes?
tropical cyclones are called "hurricanes" in the North Atlantic Ocean and Eastern and Central Pacific Ocean east of the international dateline. They are called "typhoons" or sometimes "super typhoons" if they are really strong in the Pacific Ocean west of the dateline. They are known as "cyclones" in the North Indian Ocean and in the Southern hemisphere
What are the chances of being hit by a tornado?
About 100 tons of meteoric material fall on the Earth each year.
So the question really is how often will a 'significant' one arrive.
They appear to have been much less common in recent times compared to the 'Late Heavy Bombardment' about 3.8 to 4.1 Gya. (Giga years ago). Check for that under meteors or the GHB in say wikipedia. Or have a look at 'list of impact craters on Earth' in wikipedia. You could usefully plot the size and age of these events.
What causes thunderstorms tornadoes and hurricanes?
- God is not causing the earthquakes, hurricanes, floods, droughts, and volcanic eruptions that are so often in today's news. He is not using these to bring punishment on certain peoples. To a large extent, these are caused by natural forces that have been operating since the earth's creation. The Bible foretold great earthquakes and food shortages for our day, but that does not mean that either God or Jesus is responsible for them, any more than a meteorologist is responsible for the weather that he forecasts. Because these are occurring along with all the other things foretold in the composite sign of the conclusion of this system of things, they are part of the evidence that the blessings of God's Kingdom are near. In Luke CH 21 verses 11 and 31 we read:"and there will be great earthquakes, and in one place after another pestilences and food shortages; and there will be fearful sights and from heaven great signs."In this way you also, when you see these things occurring, know that the kingdom of God is near." Humans often bear heavy responsibility for harm done. In what way? Even when given ample warning, many people refuse to get out of the danger area or fail to take needed precautions. Proverbs 22:3 tells us:"Shrewd is the one that has seen the calamity and proceeds to conceal himself, but the inexperienced have passed along and must suffer the penalty.and Matthew 24:37-39 says: "For just as the days of Noah were, so the presence of the Son of man will be. For as they were in those days before the flood, eating and drinking, men marrying and women being given in marriage, until the day that Noah entered into the ark; and they took no note until the flood came and swept them all away, so the presence of the Son of man will be. "The things we see around us are part of a sign that Jesus gave in Matthew Ch 24 that indicate that we are living deep in the time that he called the "last days" of this system of things. Ahead is God's Kingdom that will bring an end to these and other bad conditions.
- Also man himself has caused many of the natural disasters. Man basically has unbalanced every aspect of nature as it was originally meant to be. He over-killed for centuries (for example: depleted the buffalo and now is depleting the oceans of fish, etc.) Man is greedy and has depleted forests to make money off of building homes and resorts and without trees our air isn't purified and there are no longer roots to hold the soil (causing massive mud slides and severe flooding.) Man has played with too many dams for electricity, has not looked after the delicate balance of the Eco system and still refuses to listen to the cries of cleaning up air pollution (which can cause many diseases) and in general leave a bleak existence for our future generations. Each generation is responsible for looking after this planet and we haven't been doing a very good job. Our Western Indians believed that what they took from this earth they replaced. What a good idea! I am ashamed to say that British Columbia, Canada (the U.S. included) is more interested in making the almighty dollar than caring about our depletion of Coho Salmon or spending the money on getting rid of the pine beetle that have killed millions of hectares of trees leaving nothing in it's path. On and on it goes in the name of greed. I would think God would look down on this earth and shed tears!
As science improves, the domain of gods decreases. God of Abraham causes the rains to kill all of His creation, except his favored Noah and his family. Of course now we know what causes rain.
Is a typhoon a tsunami or tornado?
well, technically they ARE natural disasters, but the specific damage they cause is water/flood damage and wind damage
Can hurricanes and tornadoes get to Washington DC?
It is unlikely that a hurricane would ever hit Seattle, Washington, but nothing in nature is impossible. The reason it is unlikely is because hurricanes on the west coast typically form off of Mexico or Southern California and the wind direction is typically west, whereas Seattle Washington is north far north of the area in which hurricanes develop in the pacific. As well, in order for a system to gain intensity to the point where it would reach hurricane strenth, it would have to travel over warm water. The only way a hurricane would hit Seattle is if a storm formed in the pacific ocean, traveled due west over warm water, and then wind direction shifted from due west to due north, and then shifted to due east. Extremely unlikey.
How do tornadoes affect communities?
Damage can range from a few damaged homes and downed trees, likely causing power outages, to the complete destruction of neighborhoods and small towns, sometimes leaving dozens dead and hundreds injured.
Which part of Texas gets the most tornadoes?
The panhandle region of Texas, which is located in the northwestern part of the state, experiences the most tornadoes. This region is part of "Tornado Alley," a region known for frequent tornado activity due to the clash of warm air from the Gulf of Mexico and cool air from the Rocky Mountains.
Where and when do tornadoes usually happen?
The place with most Tornadoes is called Tornado Alley and is located east of the Rocky Mountains and north of The Gulf of Mexico.
With all due respect, it was not where, but when.
They can happen any time of the day or night. There seems to be a higher % in the afternoon or later afternoon and evening as the sun's energy heats up the atmosphere to make it unstable enough to create a multitude of reaction.
I am a trained skywarn/weather watcher in the state of MN, I have been taking classes and been a volunteer for 22 years.
Tornadoes have appeared all over the US, as well as world wide but in other parts of the world they have other names that they call them.
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Additional to add: To answer WHEN. Any time night or day. Depending on the area of the world/country, it can be any time. When our northern winters ( SD/MN) have blizzards, snow storms and extreme cold, that would be safe to say NOT THEN. We have had them as early as March and as late as November.
Southern states can have them year round.
Conditions of the atmosphere have to be in correct alignment and all heck can blow apart.
Tornadoes form when Thunderstorms begin to rotate, becoming supercells. This rotation can then tighten and intensify to produce a tornado.
Tornadoes can happen at any time of year and at any time of the day, but most often occur in spring and early summer and in the hours from 4pm to 9 pm.
What time of day do tornadoes least likely occur?
They can occur anywhere but most tornadoes occur in southern US states between March and late May. In northern US states most occur between late spring and early summer. Most tornadoes occur between 3 and 9 pm, but can occur at any hour, in any season of the year.
What kind of weather comes after a tornado?
If in the mid-latitudes, storms are usually associated with low pressure systems. Cold fronts associated with a low pressure system cause the cold air mass to move into a column of warmer air, creating an unstable atmosphere. This is where storms are created. You may know of a squall line (organized line of thunderstorms, which can be ahead of a fast-moving cold front), this creates severe thunderstorms that only last for at most 2 hours. To get back to the question, once the cold front passes, weather after the storms will be calm. Cooler air temperature and a lowered dew point, also going to have a shift in winds from SE winds to NW winds most likely. Now, if you are in the tropics (ITCZ), you could have thunderstorms all day and night. There is no jet stream support in the tropics, so the storms move slower and in the opposite direction of the westerlies. This is also where typhoons and hurricanes form. Hope this helps out a little bit, have a good one.
What indicates that a tornado warning should be given?
A tornado watch is issued when general weather conditions in a region are favorable for the formation of tornadoes. Tornado watches are numbered in the order that they are issued. So tornado watch 4 is the 4th tornado watch issued in the country that year.
Extremely violent tornadoes have been known to scour away a few inches of soil, with at least one tornado tearing it to a depth of 2 feet. Ground scouring can be an indicator that a tornado reached EF5 intensity. The link below shows a picture of some of the most severe ground scouring ever document from a tornado.
How do tornadoes affect the world and people?
Tornadoes can kill or injure people and damage or destroy their property. Tornadoes can affect the landscape by destroying vegetation and sometimes causing erosion.
Wind moves from areas of high pressure to areas of low pressure. It can also be influenced by other factors such as temperature differences, the rotation of the Earth, and the presence of obstacles like mountains or buildings. Ultimately, wind is a result of the movement of air in the atmosphere.
What are the top ten most destructive tornadoes in US history?
In terms of the number of recorded tornadoes 1991-2013 (for which reliable data exists) the top ten states are.
- Texas (3,399)
- Kansas (2,139)
- Oklahoma (1,496)
- Florida (1,443)
- Nebraska (1,282)
- Illinois (1,229)
- Colorado (1,131)
- Iowa (1,114)
- Alabama (1,093)
- Missouri (1,049)
Sort of but, they are called fire whirls but technically aren't tornadoes. They form in a way more like dust devils than real tornadoes.
