Fig 4. Temporal distribution of evacuation-related tweets.

Numbered dots indicate the key events during the time period: 1. South Carolina evacuation order (SC residents in the coastline counties were mandated to evacuate on October 4^th); 2. Georgia evacuation order (GA residents on the east of Interstate 95 were mandated to evacuate on October 6^th); 3. Florida evacuation warning by Florida Governor (1.5 million of residents living in evacuation zones on the Atlantic coast of Florida were urged to evacuated on October 6^th); 4. Landfall near McClellanville, South Carolina (October 8^th, 1500UTM).