Marco downgraded to a tropical storm as 'unprecedented' back-to-back threats target Louisiana
By David Hennen, Dakin Andone & Holly Yan
2 Tropical Storms Expected To Hit Louisiana Within 48 Hours Of Each Other
By Matthew S. Schwartz
Marco makes landfall, but it's Tropical Storm Laura that has Gulf residents really nervous
By Holly Yan & Madeline Holcombe
Storm Watch: Marco Makes Landfall, Laura Predicted To Be Category 2 Hurricane In Gulf
By Vanessa Romo & Bill Chappell