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Vernal Equinox, First Day of Spring Saturday: What it Means for Oregon, the Coast

Published 03/15/2016 at 4:51 PM PDT
By Oregon Coast Beach Connection staff

Photo: Depoe Bay just after sunset

(Oregon Coast) – Spring is not only in the air, it officially arrives this Saturday, March 19. For Portland, Oregon and its coastline, it pops into place at 9:30 p.m. (Photo: Depoe Bay just after sunset).

It also brings some astronomy parties to the Oregon coast range and the Columbia Gorge.

Jim Todd, astronomy expert with Portland's OMSI, said this is the day on which both the north and south pole of the earth are equal distances towards the sun (92.6 million miles).

“At that instant the sun stands directly over the Earths equator,” Todd said. “The first day of spring, called 'the vernal equinox'; vernal meaning 'green', and equinox meaning 'equal night' - which simply means that on the equinox the hours of daylight are equal to the hours of night.”

While Portland and Oregon coast weather may not cooperate for these observations, Todd said that from this area's vantage point on March 19 and 20, the noon sun will reach its mid-point in the sky near 45 degrees from the southern horizon. The day of the equinox is an exceptional one for finding due east and due west – from your own backyard. Simply head outdoors at sunrise or sunset and notice how the sun lines up to familiar landmarks.

Todd said that we humans on this planet get hit by the Sun's rays most directly during the summer, thanks to the 23.4 degree tilt of the Earth's axis.

“In the winter, when we are tilted away from the Sun, the rays pass through the atmosphere at a greater slant, bringing lower temperatures,” Todd said. “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.”

Sunday will be first full day of spring on the Oregon coast. This season often presents some of the best photographing conditions of the entire year. See why spring is best for photos on the Oregon coast. Where to stay in this area - Where to eat - Maps and Virtual Tours.

For those really wanting to celebrate the vernal equinox, OMSI, Rose City Astronomers and Vancouver Sidewalk Astronomers are hosting a free Star Party at both Rooster Rock State Park and at L.L. "Stub" Stewart State Park in the coast range. They happen March 19 and are open to beginners and experts. Viewing highlights includes the planet Jupiter, waxing gibbous Moon, Orion Nebula, and more.

Rooster Rock State Park is located 22 miles east of Portland on I-84 just east of Sandy River at exit 25. To reach L.L. "Stub" Stewart State Park, take US-26 west of Portland and turn right on OR-47. The event starts at sunset and is free with $5 parking per vehicle. Warm clothing and a flashlight with red light are recommended. Personal telescopes and binoculars are welcome.

Make sure to check the OMSI Star Parties site for possible weather-related cancellations. See Oregon Coast Weather.









 

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A famous little family eatery where the seafood practically gets shuffled from the sea straight into your mouth. Soups and salads include many seafood specialties, including cioppino, chowders, crab Louie and cheese breads. Fish 'n' chips come w/ various fish. Seafood sandwiches with shrimp, tuna or crab, as well as burgers. Dinners like pan fried oysters, fillets of salmon or halibut, saut�ed scallops.
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