Hot answers tagged

47

This is true, but misleading Temperatures over 50 were routinely measured in Australia in the 19th century, but it was due to the fact that Australia hadn't modernized its weather technology until 1910, which is when "official" Australian heat records begin. The pre-1910 data have not been “wiped from the record”. They are still available on the ...


40

It's not just your culture. Advice from the US National Weather Service includes: Stay away from windows and doors, and stay off porches. The answer to this related question (including the transcript of interview with meteorologist John Jensenius) and this advice from National Geographic gives some reasons for the advice. Metal frame windows and doors ...


39

Yes. As published in "Do Fish Fall from the Sky?" Science vol. 109 page 402, On October 23, 1947, biologist Alexander Dimitrivitch Bajkov, PhD was eating breakfast with his wife at a restaurant in Marksville, Louisiana when the waitress told them that fish were falling from the sky. ...J. E. Gremillion, and two merchants, E. A. Blanchard and J. M. ...


25

Yes. Based on [Relationship between surface UV radiation and air pollution in Beijing] from 2008 by An JL1, Wang YS, Li X, Sun Y, Shen SH. This study also shows that a substantial reduction (up to 50%) in the UV radiation on days with high levels of air pollution. Larger fluctuations are found in UV radiation in the summer. The effects of clouds and air ...


18

The main harm from ingestion of alcohol in cold weather is the risk of hypothermia. Alcohol is known to affect body temperature during cold weather as well as hot weather. Drinking alcohol may decrease one's core body temperature regardless of the outside temperature and might increase hypothermia risk. Alcohol ingestion increases the risk of acquiring ...


17

I immediately thought soot from the yellow flames and dry snow. It is people, many of whom are unfamiliar with snow, misunderstanding what is happening. There is a good description from Chris West at Metabunk where he sets out three points: The snow is melting, but the very loose fluffy structure of the snow wicks away the water, turing dry snow into wet ...


14

Apparently, "yes", according to Weekly cycles of air pollutants, precipitation and tropical cyclones in the coastal NW Atlantic region. R.S. Cerveny and R.C. Balling, Jr. Nature, 394: 561-562. 1998 (www) Abstract: Direct human influences on climate have been detected at local scales, such as urban temperature increases and precipitation enhancement1, ...


13

The conditions required for contrail persistence are ice-supersaturation. This means that the air is cold and humid enough that the water vapor will directly "condense" out of the air in the form of ice (the process is called "deposition"). Ice supersaturation is around 60-70% of the normally reported relative humidity, which applies to water1. However, and ...


13

It is entirely normal and natural for clouds to form around the contrails of aircraft. The clouds in the video are mostly cirrus. Cirrus clouds are very high clouds of ice crystals, and form in particular conditions - when there is a lot of moisture high in the atmosphere, and there are sufficient nucleation sites - that is, particles of dust or ice for the ...


11

No, the Saffir-Simpson Hurricane Wind Scale currently tops-out at Category 5. Snopes has also covered this issue: Is Irma a Category 6 storm? We can say with certainty that Hurricane Irma is not a Category 6 storm and will not become one because that category does not exist. The highest rating on the Saffir-Simpson Hurricane Wind Scale is a five, which ...


10

About 100 a year in the USA. An estimated 195 100 individuals (95% confidence interval, 140 400-249 800) were treated in US EDs for snow shovel–related incidents during the 17-year study period, averaging 11 500 individuals annually (SD, 5300). The average annual rate of snow shovel–related injuries and medical emergencies was 4.15 per 100 000 population. ...


10

Blogger Randal Olson reproduced a chart from Nate Silver's The Signal and the Noise which in turn has based on data from ForecastWatch. Ignore the orange line; it is irrelevant for this discussion. (Just for illustration: It is based on a similar idea of predicting that it will be hot on your birthday, because it has been hot on your previous birthdays.)...


10

An F2 tornado can flip and tumble lighter cars, which might be less comfortable than lying flat in a ditch where the wind can't get under you. Certainly in this case: Better options than ditches, overpasses, and cars (all terrible), are storm shelters and flood-proof cellars.


9

THE GREAT WIND OF APRIL 11-12, 1934, ON MOUNT WASHINGTON, N.H., AND ITS MEASUREMENT In the course of preparation of this paper, and in order to establish all the facts of such important records, arrangements were made with the cooperation of the Chief of the Weather Bureau and the Director of the Bureau of Standards to subject the anemometer to ...


9

Yes, you can: Before the rain begins, one of the first odors you may notice as winds pick up and clouds roll in is a sweet, pungent zing in your nostrils. That's the sharp, fresh aroma of ozone—a form of oxygen whose name comes from the Greek word ozein (to smell). Tropospheric chemist Louisa Emmons at the National Center for Atmospheric Research ...


9

There was a joint Hungarian-German study on the subject led by Dr. Gábor Horváth at Eötvös University in Budapest, Hungary. A team of physicists, troubled by the lack of scientific evidence for the phenomenon, set out to test the theory that water droplets on leaves can act like mini magnifying lenses, focusing the sun's rays and leaving a leaf's surface ...


9

Scientists at the Geophysical Fluid Dynamics Laboratory, part of the US National Oceanic and Atmospheric Administration (NOAA) have determined that it's too early to tell. Through research, GFDL scientists have concluded that it is premature to attribute past changes in hurricane activity to greenhouse warming, although simulated hurricanes tend to be ...


9

The Facebook post cites Cody Pierce as the source for the photo. In a comment on that post (does that link to the comment? it should) he states: Marg Braddock Real or photo chopped? Either way it is an impressive picture! 17 · January 10 at 6:48pm · Edited Cody Pierce It's real just holding him self up 24 · January 9 at 4:09pm So the photo is a real photo. ...


9

I don't believe "longitudinal wave interferometry" is actually a thing. Therefore, I think it's safe to say that any related weapons do not actually exist, and even implying that said weapons are "just theoretical" would be giving the whole notion too much legitimacy. Google Scholar returns only one result for "longitudinal wave interferometry", which is a ...


7

He is not the only one to reproduce ball lightning. Mysterious 'Ball Lightning' Recreated In The Lab [GIFS] From a NASA site (PDF): At last the discovery of how to produce ball lightning on a command and controlled basis has been discovered by Robert K. Golka, Jr. It took 23 years and thousands of failures to develop the techniques. Similar plasma balls ...


7

Can they form near the the equator? Yes. Cyclone Agni from 2004 is probably the best example of this: according to the India Meteorological Department, it was 1.5 degrees north of the equator when it became a tropical cyclone, and before it reached that strength, the circulation center may have crossed the equator twice. Is it normal? No. There are any ...


7

On the one hand, I accept that Hollywood exaggerates ... Funerals and somber events almost inevitably are portrayed as happening during slightly inclement weather in Hollywood movies. An umbrella is essential garb in a Hollywood depiction of a funeral or some other somber event. This would have been a perfect photo op. The weather in Paris on 10 November ...


7

Yes, they can fly in rain with no trouble at all and there is plenty of evidence to back this up. Of course in situations like this safety concerns are different because it would be the president of the united states on the helicopter but that doesn't change the fact that it is safe to fly in the rain. https://www.theatlantic.com/ideas/archive/2018/11/can-...


6

This issue was discussed during the last World Radiocommunication Conference, held in November 2019 by the International Telecommunication Union (ITU), under Agenda Item 1.13. The ITU has worked on this topic since 2015, and many countries, industries and international organizations have submitted studies on the compatitbility between 5G (or IMT in ITU's ...


5

There is no way to generalize the entire USA. This answer will quote jury instruction from Illinois. Do not generalize to elsewhere. As a general rule, property owners have no duty to remove natural accumulations of snow, ice or melt water from their premises...There is no liability for clearing off snow under which there is a natural accumulation ...


5

This is false. The origin of this claim is this video which shows water coming up from the ground not the sky. Snopes has an article debunking it. The video has been circulating online since at least June 2015, when it was shared under the title "Sources of water, water sources of well digging." While that version of the video did not include ...


5

Another source claims that: It is believed that, in 525 B.C., 50,000 soldiers of a Persian Army perished in the Thar Desert in the face of a giant sandstorm, and their compelling remains were discovered by archaeologists only a few years ago in the Middle Eastern deserts. Even counting drowning in sand, the lost army of Persian King Cambyses II has ...


5

No, mobile phones do not attract lightning strikes. NPR specifically addressed this BMJ article in Debunking the Cell Phone-Lightning Connection on August 2, 2006: You may have heard something a few weeks ago about how getting struck by lightning is even worse if you're carrying a cell phone. Many news organizations reported about the cell phone-...


5

According to another, longer piece in the same newspaper (published on the same day), part of the answer is that mandatory winterization rules are still being drafted by the NERC: Last year, the North American Energy Reliability Corp. began crafting mandatory federal winterization rules for power producers. The process is lengthy, however, and could take ...


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