Questions tagged [lightning]

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Earth's Electricity

This question s titled according to of one of the Nikola Tesla's patents. There he stated that lightning generates electric waves in Earth. "In the course of certain investigations which I carried ...
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What colors can lightning be and what causes the different colors?

I've always thought of lightning as being either bright white or yellow in color. However, in the summer I've also seen lightning appear red as so called "heat lightning". What I'm wondering is what ...
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Photo of sprites in a clear dark sky, how is this possible?

above x2: Photos by David Finlay, from here. The BBC news article Rare 'sprites' photographed beside Southern Lights shows photographs by the Australian photographer David Finlay. They are remarkably ...
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Does lightning strike density decrease over cities?

I've been noticing that large (for the northeast US!) lightning storms seem to lose their lightning as they move over downtown Boston. Example gif below (from today, August 19 2021, ~5 am - 11 am ...
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Did Dark Lightning turn out to be a real thing? Is this what produces gamma ray flashes from lightning storms?

The Science at NASA video ScienceCasts: Dark Lightning describes observation of gamma rays from Earth by the Fermi Gamma-ray Space Telescope. These gamma rays are associated with weather that produces ...
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Is archived lightning data from the GOES-16 beta test available?

I was only able to find real-time data. Or do I have to wait until the Geostationary Lightning Mapper is greenlit for production in 2018?
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Winter Wheat & Wildfires

TL;DR: How susceptible is winter wheat to wildfire, in the environment that winter wheat is used? The scenario: Shallow water table, a steppe environment, deep-root winter wheat and a HIGH ...
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Are there places with rain and snow but no lightning and thunder?

I've been in Ukraine (Kiev) in the winter, and this winter was snowy and rainy but still I've never seen or listened there neither lightning nor thunders. What is the explanation for that? I thought ...
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Does lightning release the same electromagnetic emmisions as an arc welder?

Looking at an arc welder is bad, it is a source that emits on a broad range of the electromagnetic spectrum. More specifically the blue and UV are particularly bad for vision: Artificial sources of ...
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433 views

Where does lightning strike?

While watching lightning activity in the sky from afar, a natural curiosity welled within me. What are the exact locations where those lightning bolts strike? All these questions appear because of my ...
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50 views

Lightning categorization of a high-speed "ball" of light

While driving behind the back side of an intense thunderstorm, I saw a lightning phenomenon I haven't seen before - just a bright blueish light at high speed, following an erratic path, just like the ...
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To what extent does lightning produced NOx end up in the atmopsheric boundary layer?

Lightning produced NO$_{x}$ (emitted as NO but quickly converted to NO$_{2}$) can be one of the major sources of atmospheric NO$_{x}$ in the tropics [1]. Estimates of emissions per flash range from 10 ...
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63 views

What triggers the formation of channels of ionized air for lightning strikes to occur?

I apologize for the lack of foundational knowledge underlying this question. At wikipedia it is stated Initiation of the outward leaders is not well understood. The electric field strength ...
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331 views

What causes lightning to be a different color above the clouds than below the clouds?

Recently, I was flying out of the midwest during a lightning storm, and I was able to see lightning both above and below the clouds. I noticed that the lightning below the clouds was orangish/...
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Why aren't positive cloud-to-ground lightning strikes associated with the precipitation core of a storm?

My understanding is that positive CG flashes are more common on the leading edge or tail end of a storm, and can be associated with weakening storms. Shouldn't the most powerful lightning strikes (+CG ...
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1answer
98 views

How to measure voltage differential across different altitudes

Imagine two points, one directly above the other ( Point A - 10,000 feet (PA) Point B - 20,000 feet (PB) Imagine there's voltage potential between those two points Q1: How could you measure the ...