Questions tagged [tropical-cyclone]

A tropical cyclone is a rapidly-rotating storm system characterized by a low-pressure center, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain. Depending on its location and strength, a tropical cyclone is referred to by names such as hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, and cyclone.

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What makes a typhoon suddenly turn by 90 degrees? (e.g. 2021 In-fa/Fabian)

The motion of Typhoon In-fa or Fabian made a hard 90 degree left turn and started heading towards Taiwan, slowed to 5 km/hr before reaching it, then took a hard 90 degree right turn and proceeded ...
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Does storm seasonality vary with latitude?

Anecdotally, where I live in northern Europe, the weather seems to be stormier in winter, and this seems to be backed up by hard data. For example, https://www.sciencedirect.com/science/article/pii/...
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Why do 30% of all typhoons in the western north pacific (WNP) affect Taiwan?

A 300-Year Typhoon Record in Taiwan and the Relationship with Solar Activity (also here) shows that about 30% of all typhoons in the western north pacific (WNP) affect Taiwan. (Author's home page) I'm ...
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Are hurricanes/cyclones/typhoons in the Pacific Ocean usually larger than in Atlantic Ocean?

Just my experience of observation: hurricanes/cyclones/typhoons in the Pacific Ocean seem to look larger than those in Atlantic Ocean (by looks I mean they occupy more grids in satellite images). If ...
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Why did Hurricane Harvey have so much lightning associated with it?

Hurricane Harvey (Category 4 hurricane, in August 2017) was a prodigious lightning producer when it hit Houston/SE Texas. But I thought hurricanes don't have much lightning (with the eyewall being the ...
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Are there four-times daily sea surface temperature (SST) data product for Tropical Cyclone research?

Now I am working on a Tropical Cyclone project, and want to figure out the SST status when a TC passes by. I've been searching for SST products, yet there only show up to daily SST. My question is ...
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Why exactly did the use of Greek letters as names for Hurricanes happen the first place, despite the fairly obvious and predictable impracticalities?

The Washington Post article Hurricanes Eta and Iota brought disaster to Central America. Officials can’t retire their names. describes a complicated situation, aspects of which are: Eta roared ashore ...
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What will happen if the Greek letter names were exhausted for naming tropical storms?

The traditional list of hurricane names for the year goes from A to W, and, in the very rare occurrence that the W storm has formed and there is another tropical storm out there, then the Greek letter ...
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In the future, is the World Meteorological Organization going to allow Hurricanes Zeta, Eta, and Theta to exist simultaneously?

In the 2005 Atlantic Hurricane Season, we got all the way to Tropical Storm Zeta, which is the current record. This year we may very well surpass that. However, right after Zeta come Eta and then ...
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Why Hong Kong typhoon signals only 1, 3, 8, 9 and 10?

Why doesn't Hong Kong have typhoon signal numbers 2, 4, 5, 6, 7? Please explain like I'm 5. I read Quora, but I don't understand those complex answers!
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Would hurricanes on an ocean planet continue indefinitely?

Hurricanes seem to run out of steam when they make landfall. If our planet were entirely covered by ocean, would hurricanes continue indefinitely? Would they keep gathering energy and increasing in ...
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Have two hurricanes ever merged? And what was the result?

I was just reading this about how Hurricane Ethel could have merged with Hurricane Dora in 1964. Has such a merge ever happened before in history? If so, what was the result? Would storms become ...
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Tropical cyclones in North Indian Ocean in winter

The North Indian Ocean basin which consists of Bay of Bengal and Arabian Sea witnesses mainly two tropical cyclone seasons: pre-monsoon and post-monsoon. My question is that what is it that causes the ...
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At the same speed, is a tornado as dangerous as straight wind?

If we have a place with wind at a given speed, and a tornado at the same speed, are they equally dangerous, or the tornado is more powerful?
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Extratropical transition of tropical cyclone

I am a beginner of learning Tropical Cyclone. I would like to represent the extratropical transition of a tropical cyclone. But I can't understand on what actually in need to focus. For a tropical ...
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Are there any other sites that allow users to search for historic hurricanes within a given area?

Once upon a time I seem to remember there being a plethora of sites with very graphical interactive tools for quickly searching Atlantic hurricane data by time range, locations impacted, and storm ...
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Why is wind shear consistently high in the South Atlantic?

I have read that perhaps the largest reason that tropical cyclones are so rare in the South Atlantic is due to chronically-high vertical wind shear which inhibits their structural development. But ...
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Do hurricanes cool the earth?

I noticed that temperature drops in the surrounding area of a hurricane. Is the heat converted into kinetic energy? Could the shape of the hurricanes reflect sunlight? Do they create more lightning ...
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What is the largest hurricane possible?

With Earth getting hotter and hurricanes also getting larger I wonder; Is there a limit on how big a hurricane can physically get?
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Why are there no hurricanes in the southern Atlantic basin?

We see tropical cyclones (going by different names e.g. hurricane, typhoon, cyclone) all over the tropics, but it seems that there are never any storms in the southern Atlantic. See this map of ...
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Why isn't Dorian raining on the southeast side?

Dorian is currently passing over the Carolinas but its eye is only brushing the shore. However there's a side of Dorian that isn't raining: Is this unique to Dorian?
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How much energy did Hurricane Camille release?

According to this article, Energy Hurricane Volcano we find that for a typical mature hurricane, we get numbers in the range of 1.5 x 10^12 Watts or 1.3 x 10^17 Joules/day (this is according to ...
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Is it normal for a cyclonic storm to form at the latitude of New York, USA?

I am following climate activist Greta Thunberg's sail to N America from Europe on https://tracker.borisherrmannracing.com/. The model shows a cyclonic storm forming south of Nova Scotia, east of New ...
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Is there any possible way that a tropical cyclone of any strength could form over land?

Most tropical cyclones rapidly weaken over land, however, given some conditions (such as very wet soil/ground cover and tropical lower atmospheric conditions) they can sustain themselves or even ...
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Impossible or improbable? Hurricane crossing the equator

No known hurricane has ever crossed the equator. Hurricanes require the Coriolis force to develop and generally form at least 5° away from the equator since the Coriolis force is zero there. Are ...
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How rare was Hurrican Barry's storm track?

Unlike most hurricanes that affect the eastern and central U.S. Barry did not form in the Atlantic. Instead it formed apparently from a low that veered into the Gulf of Mexico from the continental U.S....
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Why does Hong Kong have one of the best natural harbours in the world that can protect ships from the typhoon winds?

My question in this post's title is predicated on Reddit - Hong Kong was perfect for the British as a staging point from which to trade with China. This was because Hong Kong has one of the best ...
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Why is there no middle ground between tornadoes and hurricanes?

A tornado has an effective area of destruction about the size of a city block. A hurricane spans several hundred kilometers. However, there doesn't seem to be a continuum between the two. Why are ...
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Two severe cyclones connected by a monsoonal trough

At the time of writing, areas around the Northern Territory (TC Lam) and Queensland (TC Marcia) in Australia are in the path of severe cyclones (category 4 at the moment, with the Queensland one - TC ...
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Relation between direction of shear and tropical cyclone formation

In an earlier question/answer Why are there no cyclones in the southern Atlantic basin there was a point raised about direction of shear(abetting/retarding) cyclone formation. It appears ...
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Have there ever been simultaneous cyclones in the same ocean but different hemispheres?

I'm teaching a physics class, and I'm getting to the point where we are talking about the Coriolis effect. I usually show a couple of photos/videos showing a storm in the Northern Hemisphere and a ...
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Importance of surface boundary conditions in a weather model

I have a question regarding the usage of SST values for simulating a real time event such as a tropical cyclone. I feel that I should use the most updated SST values in order to get the accurate ...
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Why don't tropical cyclones hit Hawaii?

Image by Wikipedia user Citynoise using NOAA data. If you look at this map of tropical cyclone tracks, you'll notice that there's a gap in the central northern Pacific where tropical cyclones ...
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Has a hurricane or cyclone ever reformed after passing over a large land mass?

Hurricane Michael recently hit Florida as a Category 4 storm, and after the remnants passed across a great deal of the east coast of the United States it appears to have re-emerged into the Atlantic ...
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Why do hurricanes hitting the US East Coast seem to go north once hitting land?

Question says it all really. It appears that every hurricane hitting the US East Coast directs itself north once on land. Hurricane Florence is predicted to hit North Carolina then turn toward Canada ...
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How would a particle travel in a hurricane?

How would a particle other then water travel in a hurricane? At what buoyancy or height would a small air born life preserver be safe from the ground in a hurricane? How fun would that be?
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Does a hurricane classification exists where estimated rainfall is taken into account?

Hurricanes are classified with the Saffir–Simpson hurricane wind scale. However an extreme amount of rainfall can cause a disaster although the windspeeds are not extreme. Is there some sort of ...
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Are hurricane storm surges smaller when the storms strike small islands?

My understanding of a storm surge is that it is caused by the hurricane "pushing" water towards the land. When a hurricane makes landfall, this water washes up on the short generating a storm surge. ...
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Why is the atmospheric pressure in a tropical cyclone lowest in the eye, even though it contains sinking air?

The lowest atmospheric pressure in a tropical cyclone is generally located in the eye at the center of the cyclone; however, the air in the eye is descending, while the air in the surrounding portions ...
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North Indian ocean tropical cyclones

Why are tropical cyclones in the Bay of Bengal more frequent and stronger than those in the Arabian Sea?
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Does the hour of the day and the position on the sun have any influences on the formation of a hurricane?

I am writing an essay and cannot find if a hurricane is influenced by the position of the sun or the hour of the day.
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How to find Steering Flow of a tropical cyclone?

I am wondering a method to find the steering flow of a tropical cyclone from wind data?
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Calculation of translation speed of a tropical cyclone from output data from models?

What is the translation speed of a tropical cyclone and how can it be calculated from model outputs? I have mean sea level pressure, u-wind and v-wind. I understand that it is the linear speed at ...
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Why are tropical cyclones forming earlier in the North Atlantic basin?

This tweet from Brian McNoldy includes a graph suggesting that tropical cyclones are typically getting named earlier in the year in the Atlantic: What are the causes for this?
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How can a storm drop 40 inches (1 metre) of rain?

Hurricane Harvey dumped more that 20 inches (500 mm) of rain over a large region, with 40+ (>1000 mm) in some spots... and much more expected. How is that possible? Does the atmosphere really hold ...
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Can strong winds significantly lower ocean surface levels, or is it really the static pressure differences?

The Washington Post article Hurricane Irma is literally sucking the water away from shorelines written by the Post's atmospheric scientist Angela Fritz describes leads with this: As a meteorologist, ...
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Why does hot air sink in the eye of a tropical cyclone? [duplicate]

We know that warm air rises in the atmosphere due to the reduced density of the parcel itself. But in the eye of a tropical cyclone the warm air sinks down and does not reach the surface, but gets ...
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Hurricane eye on landfall and relation to wind speeds

I am not a meteorologist but watching Hurricane Irma (2017), I have a couple questions about how hurricanes keep their formation based on geographical landmarks. How does the radius of the hurricane'...
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Why does the absence of diabatic heating rate and frictional terms make the zonal and vertical velocity identically zero?

I was reading an article on fluid dynamics of tropical cyclones, where I came across a condition which states that, For adiabatic friction less flow, equations (1) to (5) have a solution, v(r, z),...
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When there is snow on the ground, can a hurricane still form?

Where there is snow on the ground, it is a clear indicator that winter in near or already here. Meaning the oceans waters will be colder. But can hurricanes still form in such weather?