'Portal Storm'

Portal Storms are a single portal leading to other dimensions, most likely Plant 16 and X-1123. Portal storms can cause destruction anywhere they go, and can also cause flocks of aliens to come through them.

HISTORY

Portal storms were first researched at the Black Mesa Research Facility, but was abandoned during the 72 Hour War.

FACTS

On Clipboards in some houses and research facilitys, you can see a newspaper report stating 'Portal Storm Continues' meaning that Portal storms were common before and after the war began.