Seattle, WA – Angel McCoughtry and Iziane Castro Marques both 63.
Lindsey Harding added 12 points and Sancho Lyttle and Armintie Price each had 10, as the Dream earned their second win over the Storm in less than a week.
Katie Smith paced the Seattle, which couldn't extend its season-high home win streak to nine games, with 15 points, while Swin Cash had 14 points and Sue Bird managed 10 points.
Atlanta led 50-42 at the half and outscored Seattle 23-13 in the third quarter to establish a comfortable advantage. McCoughtry scored six points on 3-for-5 shooting over that span, while the Storm coughed the ball up eight times.