There are two related reasons. First, mobile homes are generally not well built, and can be severely damaged or destroyed by winds that would cause much less severe damage to a typical frame house. Second, mobile homes are usually not well anchored, and so can be easily overturned.
For the same reason, mobile homes are not safe during hurricanes or tornadoes.
Lightning, flash floods, tornadoes, and damaging straight-line winds.
Sheltering indoors is safest; winds can blow damaging debris your way.
Yes, the damaging winds could damage the atomic Betty's Ship.
Hail overall is more common. But damaging winds appear to occur more frequently than severe hail (≥1" diameter).
Straight line winds are, convective wind gusts, outflow and downbursts. Straight-line wind is wind that comes out of a thunderstorm.
No. Mobile homes are easily destroyed or overturned by high winds and are easily carried away by flooding, making them one of the worst places to stay during a hurricane.
The primary cause of damaging winds in a thunderstorm is something called a downburst. This occurs when a mass of air within a thunderstorm cools and starts to fall. It hits the ground at great speed and spreads out horizontally, producing damaging winds that in some cases can be well over 100 mph.
Front right.
A solid line of thunderstorms is called a squall line. It is often associated with strong winds, heavy rain, lightning, and sometimes hail. Squall lines can produce severe weather such as tornadoes and damaging straight-line winds.
Severe thunderstorms would probably be the answer. They can produce strong winds in more than one way. First, they can produce winds via a downburst which is a strong downdraft that occurs during a thunderstorm, and the causes strong, straight-line winds that can sometimes exceed 130 mph. In some cases downbursts can occur along a line of severe storms, resulting in a phenomenon called a derecho. Another way thunderstorms can produce strong winds is through a rear-flank downdraft or RFD, a descending mass of dry air associated with the mesocyclone, or rotating updraft, of a supercell. The RFD can produce winds in excess of 100 mph. It is also believed to play an essential role in tornado formation.
Straight-line winds can be as dangerous as a tornado because they can cause significant damage and destruction to buildings and structures. However, tornadoes are typically more powerful and can cause more widespread devastation compared to straight-line winds.
Vehicles offer little protection. Even tornadoes of moderate strength can overturn vehicles. The large windows offer little protection from debris. Mangled cars are a common sight after a strong tornado. Severe hail will often break windows, leading to the danger of both the hail itself and broken glass. Straight-line winds are usually less of a threat to vehicles, as they are rarely strong enough to flip cars, but there still remains the fact that in a car, you will always be next to a window.