Even if the movie isn't a masterpiece, some might consider the disaster scenes terrifying, as cities are destroyed and citizens perish.
The World Trade Center being violently obliterated by the meteor. It's bad enough knowing what eventually became of the two towers but the shot being a violent explosion tinted an ominous bloody red doesn't help.
When Challenger 2 passes by with the sun in the background, the "sun" is clearly a stage light.
Many of the disaster scenes are actually reused Stock Footage from other films, including Mia Farrow's film Avalanche and just normal demolitions.
As the asteroid hits New York, the stock footage is tinted red to hide the fact that the buildings look nothing like Lower Manhattan. (In fact, the footage is of the controlled demolition of the Pruitt-Igoe housing complex in St. Louis.)
Hong Kong harbor made of cardboard cutouts (and accompanying tidal wave that didn't quite make it), mudslides made of brown water, an avalanche clearly blue-screened over footage of a skier.
Strawman Has a Point: General Adlon is meant to be a General Ripper, but he makes very good points about not being able to trust the Russians at the height of the Cold War.
Tear Jerker: The deaths of all those people in Hong Kong, particularly that of the family trying to flee with their sobbing child and their dog, who very nearly got abandoned in the chaos only to die anyway.
What an Idiot!: This can be pointed to many of the citizens in Hong Kong, including a man we see along with his wife, who also have a child and dog. This is when they somehow go the wrong way when evading the tsunami, as they go towards the tsunami which gets them killed.