Super snow moon 2019: How to watch this year's brightest supermoon

Where and when to look for the best view as the moon comes a little closer on Tuesday and is at its brightest for all of 2019.

Eric Mack Contributing Editor
Eric Mack has been a CNET contributor since 2011. Eric and his family live 100% energy and water independent on his off-grid compound in the New Mexico desert. Eric uses his passion for writing about energy, renewables, science and climate to bring educational content to life on topics around the solar panel and deregulated energy industries. Eric helps consumers by demystifying solar, battery, renewable energy, energy choice concepts, and also reviews solar installers. Previously, Eric covered space, science, climate change and all things futuristic. His encrypted email for tips is ericcmack@protonmail.com.
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Eric Mack
2 min read

The moon, or supermoon, as it sets over the Martin Luther King Jr. Memorial on Monday, Nov. 14, 2016. 

NASA/Aubrey Gemignani

Another supermoon is set to grace the celestial stage Tuesday. And while it will be blocked out for many in North America by a sprawling coast-to-coast system of storms, those who catch it will glimpse our natural satellite at its largest and brightest all year. 

We get a supermoon when the moon is full or nearly full and also at its closest point to Earth along its slightly elliptical orbit. This close approach is called perigee by astronomers. In 2019, there are three supermoons and they fall in the first three months of the year.

You may recall in January we had the spectacle of the "super blood wolf moon" in which a lunar eclipse or "blood moon" coincided with a supermoon and the first full moon of the calendar year, traditionally called the wolf moon.

Super blood wolf moon lunar eclipse dazzles in striking photos

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This Tuesday night will bring the "super snow moon." Due to a number of nuances in the interactions between the sun, Earth and moon, the distance between us and and each supermoon varies a bit. It just so happens that this week's perigee will be about 362 miles (583 kilometers) closer to us than last month's supermoon, according to NASA.

You'd need to have a remarkably trained eye to notice the difference between each supermoon. It's hard enough to even see the difference between a regular full moon and a supermoon, which only appears up to 14 percent larger in the sky and maybe 30 percent brighter.

If you really want to be wowed, your best bet is to check out the full moon when it rises in the east as the sun is setting in the west. This is when it will appear to be biggest, although this is mostly due to an optical illusion. 

This happens when the moon is close to the horizon and there are objects such as trees or buildings within our line of sight, NASA astronomer Mitzi Adams explains. "Because these relatively close objects are in front of the moon, our brain is tricked into thinking the moon is much closer to the objects that are in our line of sight," Adams says. 

Stunning supermoon images from around the world (pictures)

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Adams adds that you can check the effect by holding a coin at arm's length so it covers the moon. Do this at moonrise when the moon appears huge on the horizon and later when it looks smaller high in the sky and you'll see that the same size coin covers the moon the whole night. 

It should be obvious why a February full moon is traditionally called a "snow moon" in the United States. The second calendar month is historically more filled with fluffy white precipitation than any other. 

This also means the super snow moon has a better chance of being blocked from view by, well ... snowfall. If that happens, there's still the third and final supermoon of 2019, which comes in exactly four weeks on March 19.