Sunday's supermoon will be biggest and brightest full moon this year

Translation: Be sure to step outside Sunday night and take a look at the sky.

North America is due to see its first and only supermoon of 2017, which is what happens when a full moon coincides with at least 90 percent of its closest approach to Earth. As luck would have it, supermoons that occur during the winter months in the northern hemisphere also look larger than supermoons during other times of the year. Each time the moon orbits the Earth, every 29.5 days, it will reach a close point to the Earth (perigee), and a far point (apogee), and occasionally, the close point will be close to the date of the full moon or new moon, a supermoon. The gravitational forces exerted by the moon and sun are at their greatest at this time.

On Dec. 4, the high tide will reach 6.8 feet at 9:30 Port San Luis.

This weekend's supermoon will be 222,761 miles from Earth, over 16,000 miles closer than its average 238,900 miles. That's because the Earth is closer to the sun, and the sun's gravity tugs the moon closer to the Earth.

The exact moment of the full moon is the morning of December 3 at 10:46 a.m. ET, (9:46 a.m. CT, 8:46 a.m. MT, and 6:46 a.m. PT), said.

The moon will officially be full at 8:46 a.m. MT in Denver on Sunday, Dec. 3. This is actually the first and only visible supermoon of 2017. It just won't be a full moon.

A supermoon in 2016 seen over Lancashire
A supermoon in 2016 seen over Lancashire

Some Native American tribes also call the December full moon the Long Nights Moon. But supermoons would even more rare if the moon didn't precess.

The moon will be at its brightest above the borough at around 4:47pm.

Part of it depends on where you're viewing the supermoon. If you choose to watch it live, check what local time you should tune in here.

What makes this moon different from the other lunar events of the a year ago?

Considering that a full moon can be covered with a fingernail, even a 7% larger moon may not look that much bigger.

  • Joey Payne