*** 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 95.9 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 at https://bsky.app/profile/paulpiorekwicc.bsky.social/

Tuesday, March 19, 2024

Spring Arrives Today at 11:06 p.m. EDT in the Northern Hemisphere

Today is the last full day of Winter in the Northern Hemisphere. Spring officially arrives in the Northern Hemisphere at 11:06 p.m. EDT. That's when the direct rays of the Sun pass over the Equator, technically creating "equal day and equal night" over the face of the Earth.

I've always observed the change of seasons with more reverence and awe than New Year's Eve. After all, the beginning of a new year is an arbitrary date which can actually be recognized just about any time during the year. However, an equinox or a solstice is a much more meaningful "event" and can be explained astronomically. The time is exact and changes every year although, for the most part, the date doesn't vary much.

Spring

The change of seasons is due to the 23.4 degree tilt of the Earth's axis. Because of the tilt, we receive the Sun's rays most directly in the Summer. In the Winter, when we are tilted away from the Sun, the rays pass through the atmosphere at a greater slant, bringing lower temperatures. If the Earth rotated on an axis perpendicular to the plane of the Earth's orbit around the Sun, there would be no variation in day lengths or temperatures throughout the year, and we would not have seasons.

Now that Winter is just about in our rear-view mirror, how did we fare as far as snow is concerned? Officially, slightly more than one foot (15.6") of snow fell this season at the Bridgeport climate station, which is slightly more than half the normal snowfall (30.8) through today.

Spring2

Southwestern Connecticut didn't experience much of a Winter. However, recent history suggests that the official change of seasons in the Northern Hemisphere doesn't necessarily mean a smooth transition from Winter to Spring.

Happy Spring!

Paul