Tracking the Tropics: Laura shifts west, Marco weakens overnight (Monday 8AM Update)

Tropical Storm Laura's track has shifted west again, putting Houston back in the cone. Marco weakened to a tropical storm overnight. Meteorologist Chita Craft breaks down the latest spaghetti models and tracks. Plus, what to expect next. Like us on Facebook:   / khou11   Follow us on Twitter:   / khou   Download our app: http://khou.com/app