Questions tagged [weather]

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Why water vapors form over the surface of a water body in the morning?

I live near equator region of Earth. During winters specifically, I see water vapors forming over the surface of the water body in the morning. Why do they form?
28
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1answer
438 views

What are these strange rays in the sky?

While driving, I noticed the sky had weird rays that appeared converge at some point on the horizon. I took a few pictures in hopes I could figure out what they were. There was a storm coming from ...
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1answer
78 views

By what equation the future temperature predictions are made? [closed]

I'm a Ph.D student in plasma physics but interested in learning physics behind climate modeling and predictions. I want to begin with studying what equation is used for the future temperature ...
3
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1answer
56 views

Why isn't thunder muted or softened by rain drops?

I watched a documentary showing how NASA applied water droplets to absorb the huge amount of sound energy when the rocket is ignited at launch. So, how come billions of rain drops don't seem to mute ...
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1answer
23 views

Can pressure gradient force be balanced by Coriolis force?

I was learning about wind from my class textbook. In that there is first a description of forces affecting the velocity and direction of wind followed by that is geostrophic wind. My question is: At ...
4
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2answers
186 views

Explanation for an unexpected rainbow

Yesterday, I observed an unexpected rainbow in the sky. There was no forecast for rain, neither was it raining anywhere nearby. I have been trying to find an explanation but don't seem to find any. ...
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0answers
62 views

Does level of pollution determine if a rainbow will be formed? [closed]

Today I saw a rainbow after almost a decade. I live in Noida (a city) in India. Most people I know believe that: we don't see rainbows nowadays because of pollution and now after nearly 3 months since ...
2
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2answers
71 views

Why do my lights become brighter during a thunderstorm?

Today, during a thunderstorm, the lamps in the room suddenly flickered and then gradually became brighter in less than a second. The lamps remained brighter than normal for a few seconds before ...
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0answers
6 views

Does increasing the atmosphere of Mars cause dust storms to last longer?

This is both a science-fiction question (assuming some terraforming of Mars[crashing asteroids could be fun]) and a physics question about dust particles being carried by the martian winds. Some dust ...
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0answers
25 views

Best Resources for Learning Mathematics Behind Weather Forecasting

Anyone know what the standard texts and papers are for understanding how modern ie numerical weather forecasting is done?
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0answers
45 views

Is there a connection between bathtub drains and tornados?

In the MIT fluid videos (link with timestamp), I heard that a tornado is essentially the same physics as a bathtub drain, but upside down. It doesn't look that way to me. It looks like both fluids ...
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0answers
29 views

Calculate Roughness of Water with Weather Data?

I'm trying to calculate the roughness (in regards to rowing/boating, so white capping waves would be very rough, while glass-like water would be no roughness) of a body of water given the weather data ...
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0answers
37 views

Bottom orbital velocity during a typical typhoon

What is the wave orbital velocity generated during a typhoon? I cannot find direct measurements, so hoping to find a way to calculate this. In other words: How do I get from wind speeds of 12 on the ...
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0answers
107 views

Why do rain clouds form in the first place?

Thought process leading to the question It's cold over here in India and I noticed that while breathing out some cloudy thing comes out of my mouth (I found it is called EBC (Exhaled Breathe ...
38
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3answers
5k views

Why are rain clouds darker?

I was taught in school that clouds are white due to the scattering of light. Since all rays are reflected it appears as white. But I am wondering about rain clouds. Why are rain clouds darker?
3
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1answer
58 views

Is there a molecular diffusion component to wind?

I'm thinking of vapor pressure from terrestrial water: A highly evaporating area in the ocean creates a volume of high relative humidity, the vapor tends to move to less humid air and by molecular ...
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2answers
73 views

Physical meaning of angular spectrum

I have been going through the paper Diffraction from an irregular screen with applications to ionospheric problems. H.G. Booker, J.A. Ratcliffe and D.H. Shinn. Philos. Trans. Royal Soc. A 242, 579 ...
2
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1answer
67 views

Why doesn't it rain every night as humid air cools?

When atmospheric relative humidity (RH) exceeds 100%, water must condense out of the air. We typically see this as rainfall. In North-Eastern U.S. summers it is common for daytime air to reach above ...
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2answers
103 views

Why we have not eliminated hurricanes and tornadoes? [closed]

Hurricanes are caused by too much warm humidity in the air. When this humid air encounters cold air, the humidity condenses to water which forms a low pressure region of air. The low pressure region ...
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1answer
47 views

Is a typhoon/hurricane also affected by Magnus Effect?

We all know that typhoons move as they rotate.
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3answers
62 views

On the Coriolis effect and weather

I learned in classical mechanics that the Coriolis Effect curves everything with speed to the right in the northern hemisphere and to the left in the southern hemisphere, my question is then why ...
31
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8answers
9k views

Why aren't rainbows blurred-out into nothing after they are produced?

I understand how a prism works and how a single raindrop can scatter white light into a rainbow, but it seems to me that in normal atmospheric conditions, we should not be able to see rainbows. When ...
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1answer
72 views

Is it possible to destroy a typhoon by bombs?

When a typhoon is still on the ocean, if a big bomb or several bombs are thrown to it, maybe at the eye, or at the part where the wind circles fastest, can the bomb destroy the typhoon?
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1answer
28 views

How do I approximate indoor temperature of a non-ventilated building?

How do I obtain a good approximate of the indoor temperature of a non-ventilated building (i.e., with no air conditioning) if I know the outside temperature (and possibly other factors, like humidity)?...
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3answers
57 views

Blowing smoke out of the clean air - can someone explain?

Yesterday my wife and I were out walking. The weather was cloudy and humid (it had been raining a few hours before). Around 15 C. Suddenly, with no apparent reason, both of us had smoke coming out ...
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2answers
59 views

Exact mode of evaporation

I am having a doubt regarding what is the exact mechanism of cooling during evaporation. At one place it is said that as surface water molecules evaporate it takes heat from surroundings and hence ...
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0answers
17 views

What are the implications of a warmer earth for hurricanes by 2100?

The main magic number is the surface sea water temperature. Above, I think 27 C the warm, moist air provides more energy that the storm uses. This is why the hurricane season is late summer into ...
3
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1answer
133 views

Is it possible to find dry ice crystals lying around the base in Antarctica?

Dry ice sublimates at -78.5°C, while the lowest temperature registered is about -89.2°C around the Vostok station in Antarctica. Imagine a person living on that station on that day (or night, since it ...
2
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1answer
67 views

When the barometer drops, my well level seems to rise - how?

I have a deep water well, with a length of 1/4" drip tubing, open at the bottom, taped to the pump 180' down. The other end of the tubing is connected to a gauge pressure sensor in the cabinet of my ...
3
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1answer
682 views

Why does high pressure cause clear skies?

In high-pressure areas, air falls, but why does high pressure leads to clear, sunny skies?
2
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2answers
109 views

What exactly is the time step in weather predictions?

The question basically says it all. I am confused as to what the 'time step' in weather prediction signifies-- is it the time interval between each measurement of the initial condition? Or is it the ...
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2answers
40 views

What kind of outdoor weather is ideal for condensing moisture that's in air?

What kind of outdoor weather is ideal for condensing moisture that's in air? Temperature, humidity? Does condensation increase the more difference in temperatures there is?
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1answer
81 views

How do frogs and fish rain? [closed]

I saw a documentary about the rain of frogs and fish in certain areas due to water sprouts sucking them up and causing rain of frogs and fish (pretty large ones) hundreds of miles away. But how is it ...
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2answers
640 views

Why are clouds lighter than the sky during the day but darker at night

This is probably a very basic question but I couldn't find a good answer to it, most search results are about rain clouds or clouds appearing red at night (something I've never seen except for during ...
11
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1answer
260 views

Why do random slabs stay dry in the rain? [closed]

The image below shows the slabbed area I can see from my work window Whenever it rains some of the slabs stay dry however, it is never consistent which ones. Can anyone explain why this happens to ...
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1answer
86 views

if you shoot rpg in eye hurricane, destory it? [closed]

I been think way to save people by destroy the hurricane.
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5answers
8k views

Why aren't rainbows more common?

Why are rainbows relatively rare? On any given day, there are billions of water drops in the air of varying sizes and dispersions, all of which light is passing through and refracting. What physical ...
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1answer
43 views

Is it sufficient to consider a small part of a system (without potential energy sources which can be released) to determine if it's chaotic?

The world around us abounds with chaotic systems: dripping taps (when a certain dripping rate is reached the dripping becomes irregular, which can be seen in this old but very entertaining video, ...
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1answer
23 views

Wind direction affecting temperature,

I am working on a paper for a Graduate School class and I wonder how can I create an experiment that shows how wind direction affects temperatures? I understand the concept myself however I want to ...
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1answer
58 views

What causes the perceived intensity of the sun to change on a short timescale?

I was inspired by this question to ask, what causes the "beating down" feeling of the sun to vary day to day? While the linked post explains why the sun feels hotter in the summer than in the winter, ...
1
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1answer
30 views

Human body water storage effects on weather patterns

There are 7.614 billion humans and counting. On average a human being consists of 60% water. With that water being locked away from natural circulation for an average of 80 years. Are there any ...
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1answer
40 views

How to know wind speed, given the force

I'm doing a game that is set in a desert and there are sand storms that occur periodically. What I've done is very basic and far from realistic, which is ...
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0answers
194 views

Calculate Height of Ocean Tides if Earth Had a Larger/Smaller Radius

For context, I'm coming at this question from the Worldbuilding stackexchange, where I've posted a related question. I'm not a physicist or scientist by training, so if I make any glaring errors, ...
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2answers
94 views

Icy roads while the temperature is above 0 Celsius?

The temperature last night in my suburb and in Montreal was 4 Celsius at 9 P.M. . The snow and rain of the day had melted and the roads were damp but not icy. This morning at 5 A.M, the temperature ...
3
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1answer
593 views

How do convective clouds form?

What are necessary conditions to form convective clouds with their flat cloud base, like this one: I know that convective instalibity at the ground is at start of the process, but I have realized ...
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2answers
57 views

Why does cooling down result in a decrease in density?

In chapter one of the textbook by AC Phillips, we find "... as the temperature fell, the density of the universe became too low for the neutrinos to interact effectively with matter..." This doesn't ...
3
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1answer
579 views

Why do we feel hot when temperature is relatively high even though it might be lower than our normal body temperature

This question popped into my head while studying simple thermodynamics. Let's say the air temperature outside is 30 degrees Celsius/ 86 fahrenheit, which is relatively high to the average, even though ...
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1answer
53 views

Sun distance, temperature changes

During winter, given that over a few days the earth is basically the same distance from the sun, why can there be such a significant drop in temperature in just one or two days that have equally ...
3
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0answers
113 views

Why don't two air masses just mix in the atmosphere?

In weather fronts, two air masses of different temperature, density etc. meet and one just moves over or under the other. Why do these two just mix together? What is the physical mechanism that ...
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0answers
53 views

What is this line on water? [duplicate]

What is this line on water? What causes this difference in appearance? I often see it on lakes. Not sure if it appears in the sea too.