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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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CMIP6 ts versus tos for Pontential Intensity calculation

As per the title, I am interested in computing the potential intensity (PI) and wondering what the difference between surface temperature (ts) over the ocean and sea surface temperature (tos) in CMIP6 ...
Giuniper's user avatar
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3 answers
105 views

Do tropical cyclones impact climate?

Do tropical cyclones (TCs) have a global impact on climate? Maybe in terms of their impact on air-sea heat or gas fluxes? For example cooling the surface ocean, or enhancing CO2 fluxes? The motivation ...
ouranos's user avatar
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Why air laterally diverges before entering a cyclone/anticyclone?

I'm a newbie in meteorology so sorry if this is a dumb question. I get the general idea of how cyclones form, but one thing I can't wrap my head around is why must the air diverge laterally when ...
user29373's user avatar
2 votes
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Is it cold or hot on top of a tropical cyclone?

So I know that cloud tops of the thunderstorm in a tropical cyclone can reach -80 degrees Celsius according to infrared satellite imagery. Is the temperature of the air above the storm's eyewall ...
mEXsACHINE's user avatar
5 votes
2 answers
225 views

The motion of the upper-level outflow of a typhoon

I was taught that while the motion of a tropical cyclone is mostly cyclonic, there is an outflow at the top whose motion is anticyclonic. So I expected an animated satellite image of a typhoon to look ...
hmje's user avatar
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Why does air moving from Equator to Poles deflect to right in Northern Hemisphere due to Coriolis Force?

apologies if this is the wrong place to post this question in, but I am having a really hard time grasping Coriolis Effect. My current understanding is that - Let's say there's a point midway from ...
YatharthRai's user avatar
3 votes
0 answers
68 views

Hurricane/Cyclone movement direction

I know that, hurricanes/cyclones move from east to west because they are caught up in the trade winds, which blow from east to west near the equator. Once a hurricane/cyclone moves north of about 30 ...
pacman's user avatar
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Why don't terrestrial storms heat up the upper atmosphere?

I was reading some articles on Jupiter, when I stumbled across this article, which said that the Great Red Spot makes the upper atmosphere really, really hot. As in "hotter-than-lava". This ...
Alastor's user avatar
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How to open AVHRR files downloaded from NOAA CLASS?

I have been making RGB photos of AVHRR images from NOAA CLASS using the preview images (channel 2 & channel 4) As you can see, it isn't very good. I have been wanting to use channel 1 and channel ...
Kamty's user avatar
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What are (meteorolgical) land depressions?

Reading the Wikipedia page for some North Indian Cyclone Seasons I've come across multiple systems called "land depressions". (written as Land [number]) Example (Land 01 2019): I'm not ...
Foxfires's user avatar
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Why do east Pacific cyclones/hurricanes die out?

In the Atlantic basin, tropical cyclones start in the east and move west until they either reach land or move north into cooler waters. Based on this map of historic paths, there is a lot of ...
Amadou Kone's user avatar
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Is there a relationship between pressure drop and sea level rise?

Climate Fresk is a NGO which publishes a card game aimed at educating people about climate change. Card 33 (page 16 of this pdf file) reads (emphasis mine): Cyclones and atmospheric waves bring wind, ...
Jean-Marie Prival's user avatar
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1 answer
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Could a nuclear explosion in the Atlantic Ocean during the hurricane season trigger a hurricane?

I am wondering if denotating a nuclear bomb in the Atlantic Ocean during the hurricane season could trigger a hurricane. For example, say that a 100-megaton bomb was loaded onto a ship and that ship ...
user57467's user avatar
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How important is water condensation in maintaining the swirling winds of tornadoes?

If we somehow removed all the water from Earth, it seems that there would no longer be tornado-like 100+ mph winds (or, at least, this would be a much rarer occurrence). Discussing storm creation, ...
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Is the current tropical depression headed towards Taiwan unusually early for the season? (April 7, 2022 at 4.0N 148.0E)

Taiwan's Central Weather Bureau's Current Western North Pacific Tropical Cyclones page shows a tropical depression with the following information: TROPICAL DEPRESSION TD02 Position 061800Z at 4.0N ...
uhoh's user avatar
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radar data for buoyancy measurements of cyclones

I'm sorry if I'm asking in the wrong forum. I'm a computational scientist and I do not have much physics background. I'm working on constructing machine learning models from data. Currently, I've only ...
secondrate's user avatar
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3 answers
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Why did Hurricane Ida have so much precipitation when it reached the Northeast?

The US Northeast was hit surprisingly hard by Hurricane Ida, dumping a phenomenal amount of rain on the region, causing significant flooding and tornadic activity. I'm having difficulty understanding ...
Pyrotechnical's user avatar
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Are terms like "Extremely Torrential Rain" (>500 mm/24 hours) universal in meteorology?

Meteorological phenomenon can span large ranges in size and strength and categorizations exist based on thresholds, One example is the Saffir–Simpson hurricane wind scale (SSHWS) (see also NOAA) ...
uhoh's user avatar
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5 votes
1 answer
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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 ...
uhoh's user avatar
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4 votes
2 answers
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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 ...
uhoh's user avatar
  • 7,052
3 votes
1 answer
40 views

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 ...
D.Zhang's user avatar
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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 ...
uhoh's user avatar
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3 votes
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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 ...
arkaia's user avatar
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4 votes
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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 ...
Jeh's user avatar
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15 votes
2 answers
5k views

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 ...
SlowMagic's user avatar
1 vote
0 answers
42 views

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 ...
HARVEER RAWAT's user avatar
1 vote
1 answer
47 views

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 ...
Kay's user avatar
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7 votes
0 answers
362 views

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 ...
Grant Hartlage's user avatar
5 votes
1 answer
412 views

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?
Taylor's user avatar
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3 votes
0 answers
42 views

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?
Jossie Calderon's user avatar
1 vote
0 answers
40 views

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 ...
Pablo's user avatar
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4 votes
2 answers
126 views

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 ...
haresfur's user avatar
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6 votes
2 answers
154 views

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 ...
Grant Hartlage's user avatar
4 votes
1 answer
203 views

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 ...
spillthrill's user avatar
3 votes
0 answers
63 views

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....
BillDOe's user avatar
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3 votes
0 answers
349 views

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 ...
user avatar
3 votes
0 answers
83 views

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 ...
Agni's user avatar
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8 votes
1 answer
179 views

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 ...
Mark's user avatar
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11 votes
1 answer
2k views

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 ...
Andy's user avatar
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2 votes
3 answers
308 views

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?
Domenico Bagnato's user avatar
3 votes
1 answer
367 views

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 ...
ggdx's user avatar
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3 votes
1 answer
68 views

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?
Muze's user avatar
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4 votes
0 answers
187 views

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. ...
Michael Edward's user avatar
4 votes
0 answers
527 views

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 ...
Vikki's user avatar
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1 vote
0 answers
39 views

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?
Kay's user avatar
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1 vote
0 answers
417 views

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 ...
Kay's user avatar
  • 461
8 votes
1 answer
206 views

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?
JeopardyTempest's user avatar
6 votes
1 answer
122 views

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 ...
JeopardyTempest's user avatar
1 vote
0 answers
161 views

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 ...
Arun's user avatar
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