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Make sure you check the forecast and stay up to date on the evolving situation when it comes to the potential for winter weather. And stay off the roads if your area has the chance of icy conditions.
Washington will receive just three extra seconds of daylight on Dec. 22 than on the winter solstice, and by New Year’s Eve, the state will be enjoying an additional 4 minutes and 20 seconds of ...
AccuWeather Alerts™ are prompted by our expert meteorologists who monitor and analyze dangerous weather risks 24/7 to keep you and your family safer. Show comments Advertisement
Also actiniform. Describing a collection of low-lying, radially structured clouds with distinct shapes (resembling leaves or wheels in satellite imagery), and typically organized in extensive mesoscale fields over marine environments. They are closely related to and sometimes considered a variant of stratocumulus clouds. actinometer A scientific instrument used to measure the heating power of ...
The winter solstice occurs during the hemisphere's winter. In the Northern Hemisphere, this is the December solstice (December 21 or 22) and in the Southern Hemisphere, this is the June solstice (June 20 or 21). Although the winter solstice itself lasts only a moment, the term also refers to the day on which it occurs.
The length of the December-solstice year has been relatively stable between 6000 BC and AD 2000, in the range of 49 minutes 30 seconds to 50 minutes in excess of 365 days 5 hours. This is longer than the mean year of the Gregorian calendar, which has an excess time of 49 minutes and 12 seconds. Since 2000, it has been growing shorter.
The winter solstice marks the shortest day and longest night of the year, according to the National Weather Service. This occurs due to the Earth's tilt from the sun.
The categorical forecast in the Day 1-3 Convective Outlooks—which estimates a severe weather event occurring within 25 miles (40 km) of a point and derives the attendant risk areas from probability forecasts of tornadoes, damaging winds, and large hail on Days 1 and 2, and a combined severe weather risk on Day 3—specifies the level of ...