For other uses, see Portal (disambiguation).
A Portal Storm is an event that creates a multitude of portals to other dimensions. As seen in Half-Life 2: Episode Two, these portals spread outwards in a storm-like manner, causing havoc wherever they hit.
Since the Resonance Cascade at Black Mesa, Portal Storms have occurred all over the world bringing forth life forms from Xen. They are a highly dangerous and destructive phenomena, capable of inflicting severe structural damage to objects, such as buildings and bridges. A Portal Storm consists of a blue 'wave' which resonates from a portal and moves across the landscape.
In Half-Life 2, when at Black Mesa East, the player can see a newspaper cut-out, titled "Portal" Storm Continues. In Episode Two, a series of Portal Storms originating from the Superportal ravage the surrounding landscape.
Eli Vance's collection of old newspapers from his lab in Black Mesa East.
The Muscle Car in front of a Portal Storm.
 List of appearances
 See also
|Black Mesa Incident · Particle Storm · Portal Storm · Resonance Cascade · Superportal · Teleportation · Warpball|