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In mid-March, snow and ice still frost the ground and winter's grip feels as strong as ever in many parts of the Northern Hemisphere.
But an annual celestial alignment between Earth and the sun known as the spring equinox, which occurred today (March 20) at 6:28 a.m. ET, announced that the seasons are shifting and spring is on the way.
Twice in a year, the Earth reaches a point during its annual journey around the sun when the Northern and Southern hemispheres — the two planetary zones bisected by the equator — receive the same amount of daylight, a phenomenon called an equinox, or "equal night" in Latin. In the Northern Hemisphere, what is known as the spring equinox also marks the beginning of fall in the Southern Hemisphere. The Northern Hemisphere's autumnal equinox — six months later, on Sept. 22 — heralds the coming of spring south of the equator.
Showers and thunderstorms will congregate over the southeastern United States into the weekend, elevating the risk of flash flooding and outdoor disruptions.
Racers of the 2018 Tour de France will emerge from the mountains on Friday; however, new challenges await.
Prior to the arrival of much cooler and less humid air at midweek, thunderstorms packing torrential downpours and locally damaging winds will rattle the northeastern United States into Tuesday evening.
More than 1,450 emergency personnel are still working to contain the massive wildfire near California’s Yosemite National Park that took a deadly turn over the weekend.
Rounds of thunderstorms packing torrential rain and gusty winds will erupt along a temperature contrast zone across the Great Plains through the middle of this week.
A lightning strike can result in a cardiac arrest and death, and the most lightning strikes occur during warm summer months when people are outside enjoying the weather.
Saving the planet’s oceans from plastic pollution isn’t on the agenda of a typical sixth grader. However, Anna Du is working to achieve just that.
After passing over Hainan, Tropical Storm Son-tinh has its sights set on China and northern parts of Vietnam and Laos in the coming days.