The phrase "a potential doomsday" is correct and usable in written English.
It can be used when discussing a scenario or event that could lead to catastrophic consequences or an end-of-the-world situation.
Example: "Scientists are warning about a potential doomsday scenario if climate change continues unchecked."
Alternatives: "a possible apocalypse" or "a likely catastrophe".
It is a potential doomsday scenario for wild salmon is on the west coast.
They have watched this poor woman die a wretched death and they are thinking, 'I'm now going to die as well.'" Prof John Edmunds, from the London School of Hygiene and Tropical Medicine, who in September called the outbreak a potential doomsday scenario, said he would not say that the nightmare had been averted.
It's a potential "doomsday machine".
In Seeds Under A Microscope, Schwalje was inspired by the Svalbard Global Seed Vault in Norway, a facility that stores seeds for a potential "doomsday" scenario.
Also a good lesson here: If you want to keep an eye on potential doomsday scenarios, cough up for an early-stage investment in one of the movers and shakers that could contribute to the end of days.
And faced with a swell of potential doomsday risks since Sept. 11, from anthrax and smallpox to contaminated water and food supplies and "dirty bombs" stuffed with radioactive materials, Mr. Tomo is one of many Long Islanders who have vivid imaginations and have taken aggressive measures to protect themselves.
In September 2014, one of the screenwriters for the franchise was recruited by the Atlantic Council — a think tank that advises the US military and NATO, among others — to draw a list of potential doomsday scenarios that could lead to the downfall of the US.
The result is a potential financial doomsday, or what bond analysts call a maturity wall.
Dr. Garwin spelled out various potential doomsday terrorism threats ranging from nuclear war to biological warfare.
One or more of these mass extinctions occurred because of what we could call the big, Hollywood-style, potential doomsday scenarios.
Astronomers have proposed methodical searches for potential doomsday rocks, and to better communicate the risks to the public they devised the Torino scale, which expresses the danger of any approaching asteroid as a number between 1 and 10 (ScienceNOW, 21 July 1999).
