Greenwood SC weather radar map in motion

The horizon should be clearly defined and the brightest stars should be visible under good atmospheric conditions i. The time period when the sun is no more than 6 degrees below the horizon at either sunrise or sunset. In the beginning of morning astronomical twilight and at the end of astronomical twilight in the evening, sky illumination is very faint, and might be undetectable. Several inches of lake effect snow will be possible from a cold front passage in the Great Lakes. One still should be able to carry on ordinary outdoor activities. .

Greenwood, SC Weather Conditions

Lake Effect Snow in the Great Lakes; Cool Temperatures for Much of the U. The sun does not contribute to the illumination of the sky before this time in the morning, or after this time in the evening. Offshore winds decrease by Sunday in Southern California reducing fire weather threats. A deep trough of cold air will remain in place across most of the U. The time period when the sun is between 12 and 18 degrees below the horizon at either sunrise or sunset.