@gollum,
OBVIOUS DANGERS: Broken windows from flying objects. Trees can still fall onto roofs and walls.
Depending on the severity of the flooding and wind speed/strength, buildings still can collapse crushing anyone inside.
Damage to the infrastructure of the neighborhood: loss of electricity. Loss of water pressure might lead to running out of drinking water. Loss of water pressure plus floods plus wind plus electricity (to those areas still might have it) might cause fires to break out. No pressure means no water for the firefighters to put out the blaze.
Or replace electricity from that last scene with a broken gas main or line. Equals same possible consequence.
Damage and looting to grocery stores plus flooded roads means running out of food if the flooding lasts longer then a few days.
I can go on. Many scenarios involve placing law enforcement and other emergency personnel lives at unnecessary risk because they have to save someone's ass for being arrogant and staying in the mandatory evacuation zones when they've been ordered to leave.