• Peter Simon

Moon and the Tide

The moon appears low in the south in our evening skies this weekend. The gibbous moon spends the weekend going through the zodiacal constellation Sagittarius, the southern-most constellation in the zodiac. For those walking along the Island’s south shore, the moon will be an especially impressive sight, so close to the water and to the horizon.

The moon will appear higher in the coming week as it moves farther along the zodiac, passing into the constellation Capricornus. The moon will be full Tuesday through Wednesday. The August full moon is referred to as the Sailor’s Moon.

Tides will run more extreme than normal, but not as extreme as they were in June and July. Two astronomical events coincide. The moon is in perigee on Monday, which means that the moon will be closer to the earth than at any other time in its 28 day orbit around the Earth. The gravitational pull of the moon, together with the gravitational pull of the sun, is also greater than usual. Expect the tides to run higher and lower than normal.

With the moon taking a more dominant position in our evening skies, stargazing takes a bit of a holiday. Only the brightest stars can be seen when the moon is full. But this is also a good time to refamiliarize with the night’s brightest stars, the constellations they reside in and the relationship in space between them.

The Big Dipper appears in the northwestern sky. The dipper is tipped down, as though pouring water. Vega, one of the brightest stars of summer, is high, almost at the zenith. The constellation Pegasus, the horse, is rising in the east.

Sunrise and Sunset
DaySunriseSunset
Fri., August 165:507:40
Sat., August 175:517:38
Sun., August 185:527:37
Mon., August 195:537:36
Tues., August 205:547:34
Wed., August 215:557:33
Thurs., August 225:567:31
Fri., August 235:577:29

Temperatures and Precipitations
DayMax (Fº)Min (Fº)Inches
August 979680.05
August 1076690.07
August 1184640.00
August 1279620.00
August 1376650.05
August 1470620.58
August 157554T

Water temperature in Edgartown harbor: 75º F.

 

Water temperature in Edgartown harbor: 75º F

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