3/15/2023 0 Comments Northern lights wisconsin![]() Displays this far south can occur when a large coronal mass ejection from the Sun creates a huge geomagnetic storm in the Earth's outer atmosphere. Although most common in the northern latitudes, the Aurora have been occasionally seen south of 35 degrees north latitude which encompasses the far southern United States. They also usually show a greater frequency during the winter months, where the nights are longer and the skies generally void of haze. Aurora displays usually increase during times of the solar maximum. This means in general that in these latitudes, the Aurora should occur on at least half of the nights throughout the year. In the northern hemisphere, there is a 50% or greater chance of seeing Aurora roughly between the latitudes of 55 to 80 degrees north. Although harmless to life on Earth, the Aurora can cause power disruptions in satellite communications and in radio/TV broadcasts.Īurora Displays: The northern latitudes (or southern latitudes in the southern hemisphere) see the greatest occurrence of the Aurora. The Aurora are constantly changing and moving in streams of light or curtains, because the process of how the Sun's ionized gas interacts with the Earth's magnetic field is very dynamic. As electrons pass through the neon tubing, they glow, thus producing the light in a neon sign. This is the same principal as how a neon sign lights up. Some of the ions become trapped and will consequently interact with the Earth's ionosphere (an average of 60-80 miles above the surface), causing the ions to glow. As the plasma comes in contact with the Earth's magnetic field, the ions will be agitated into moving around the Earth. What Causes the Aurora? The Sun emits electrically-charged particles called ions, which correspondingly move away from the Sun in a stream of plasma (ionized gas) known as the solar wind. ![]() The Aurora Australis is the southern hemisphere counterpart to the Aurora Borealis. Olympus OM-1 camera, 35mm or 50mm lens, f/2.8, Fuji 800 negative film, about 30 second exposure.The Aurora Borealis (commonly referred to as the Northern Lights) are the result of interactions between the Sun and Earth's outer atmosphere. Canon 300D, 10 seconds, ISO 1600, 18mm lens, F3.5.Īurora during Perseids meteor shower from Wagman Observatory, Pittsburgh PA on August 12, 2000. Nice green aurora over lake Mendota in Madison, WI on April 9, 2006. 24, 2011Īuroras seen from Madison, Wisconsin on March 10, 2011 15, 2012Īuroras seen from Madison, Wisconsin on April 23, 2012Īuroras seen from Madison, Wisconsin on March 9, 2012Īuroras seen from Madison, Wisconsin on Oct. 30, 2012Īuroras seen from Madison, Wisconsin on July. Auroras seen from Madison, Wisconsin on Sept. Having an aurora display before ICML deadline is indeed distracting. 1, 2016Īuroras seen on NYC SEA flight on June 24, 2016.Īuroras seen from Madison Wisconsin on June 22, 2015Īuroras seen from Madison Wisconsin on May 13, 2015Īuroras seen from Calgary, Canada on July 11, 2013Īuroras seen from Madison, Wisconsin on Nov. 27, 2017Īuroras seen from Madison Wisconsin on Sept. 3, 2021.Īuroras seen from Madison Wisconsin on Sept. Bar Harbor, Maine on July 3, 2022.Īfter a four year hiatus, even a weak aurora display is welcome! The aurora was in fact invisible to the naked eye. While photographing the Milky Way at Hadley's Point, I was surprised to see red auroras in the photos. ![]() A photo can also show diffusive auroras near the northern horizon invisible to the naked eye (e.g. Auroras typically show up green, red, or magenta, while clouds are silver or orange due to sodium mercury street lights. 30 seconds, wide aperture ISO 1600), take a picture to verify. If you have a camera that can take long exposures (e.g. That is, clouds will appear dark against a bright auroral background. When both auroras and clouds are present, aurora backlits clouds. They may look like grayish clouds to the naked eye. Auroras, being mostly an oval around the north magnetic pole, typically show up between northwest and northeast.Īuroras may last for 15 minutes to several hours at a time. This is the typical height of the aurora seen from our areas.Īvoid street lights. You want a good view toward northern horizon, trees ideally should be lower than a fist's height at arm's length. You don't need to travel far - a local park is fine. When Kp>=6 it is likely that auroras are visible from our areas (e.g. This is the actual geomagnetic disturbance, and is strongly correlated with the presence of auroras. You can also check the real time Planetary K-index (Kp) value. The most important advice is to sign up for an aurora email alert such as. If you live in a "northern" state such as Wisconsin or Pennsylvania, you can expect to see a couple aurora borealis shows each year. Northern lights from my backyard in Madison, Wisconsin on Oct. How to See the Northern Lights Jerry ZhuProfessor at University of Wisconsin-Madison
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |