Hannah - Despite protests, she was ordered to go out into the storm to secure cameras and other monitoring equipment and make sure that no security measures would be damaged. That's a scene idea of anyone wants it.
Laura - She would be hunkered down with the family, and afterwards If she was needed to help put out fires (literally), she'd pitch in.
Daryn - Stayed in her apartment because lets face it, evacuation procedures were haphazard at best and there was no way in hell she was getting forced back into the Facility again.
April - She likes to play in the rain. And wind is so windy. But she'd probably be forced back inside and to safety by someone!