Our hw277 handles storms pretty well. But when there is a lot of wind they are noisy. We went through 50 mph winds out in west just fine but was not an easy night. Next morning we found skid marks in the gravel from the stabilizers as the wind had pushed the whole camper a couple of inches, scary.
Out west we tended to not put out the awning out due to the almost constant winds. Here in the east, we do put out the awning but stake it down; they will fly up on to the roof otherwise (yep learned from experience). The high wall campers are so tall when set up that the awning is impossible to put away without lowering the roof unless you have a ladder. We have also been in some torrential thunderstorms that blew away our screen gazebo (it was staked too) but we were very comfortable inside. And the awning did fine.
Have also had no issues trailering in storms either. All that said, you still have to be aware of your surroundings and an eye to the weather but we are happier in the pup in bad weather than when we tented.
HTT: "EscapeII" 2016 Shamrock 23WS (current)
PUP: "Escape" 2010 Rockwood HW 277 (gone)
TV: "Bruce" 2011 Dodge Durango V8 Hemi Crew
Just us gals (me, Sis and our daughters)
Traveled 19520 miles and 209 nights in 7 years and counting