*** Paul Piorek is editor and publisher of Paul's Local Weather Journal for southwestern Connecticut ... Paul is the on-air meteorologist at WICC 600 AM and 107.3 FM ... Paul is a New York Emmy award winner (2007), five-time Emmy nominee, and four-time winner of the Connecticut Associated Press Broadcasters' Association award for Best TV Weathercast (2006, 2008, 2009, 2012) ... Paul was voted Best Local Television Personality by the readers of Fairfield County Weekly Magazine (2012) ... Paul was inducted into the Housatonic Community College Hall of Fame and received the Distinguished Alumni Award (2012) ... The local weather journal is a two-time winner of the Communicator Award of Distinction (2012 & 2013) ... Paul is currently a full-time teacher of Earth Science and Mathematics in Fairfield ... Follow Paul on Twitter @PaulPiorekWICC ...

Thursday, December 27, 2012

Full Long Night Moon Happens Early Friday Morning

I'm sure you've been noticing the waxing Moon over the last week. In case you're wondering, the Full Moon happens early tomorrow at 5:21 EST. We should be able to get a good view of our satellite tonight as skies will remain mostly clear. Not surprisingly, this month's Full Moon is known as either the Full Cold Moon or the Full Long Night Moon.

Full_moon_largeWhy is it called the Full Long Night Moon? During December, the Winter cold fastens its grip in the Northern Hemisphere, and nights are at their longest and darkest. The term Long Night Moon is also an appropriate name because the early Winter night is long, and because the Moon is above the horizon for a long time. The midwinter full Moon has a high trajectory across the sky because it is opposite a low Sun.

In fact, the December Full Moon has been referred to as the Oak Moon, the Frost Moon, the Cold Moon, and the Moon Before Yule. No matter what the name, the Full Moon in December is directly opposite the Sun; therefore it is out for a long time. Since the Moon appears to follow nearly the same path as the Sun in the sky, the amount of time the Moon spends above the horizon varies as it orbits the Earth. The Moon is Full when it is opposite the Sun in the sky, so a Full Moon rises roughly at sunset and sets at sunrise. Therefore, we only see Full Moons at night.

Six months from now, on the Summer Solstice, the longest day of the year when the Sun spends the most time above the horizon, the Full Moon spends the least amount of time above the horizon. On the other hand, on the Winter Solstice, the shortest day of the year when the Sun spends the least time above the horizon, the Full Moon spends the most amount of time above the horizon. The time spent above the horizon each night for the Full Moon varies throughout the year about as much as the length of the day.

As far as the forecast goes, sunny skies are expected Friday before a storm system arrives this weekend. Snow will develop Saturday morning and continue through much of the day. By the time the system exits the region by midnight, three-to-five inches will coat the ground, making travel quite difficult. A gusty Northwest wind will develop in the wake of the system by Sunday, but no precipitation is likely through Monday.

Paul