The phrase "alarming impact" is correct and usable in written English.
It can be used to describe a significant and concerning effect or influence that something has on a situation or environment.
Example: "The alarming impact of climate change is evident in the increasing frequency of extreme weather events."
Alternatives: "disturbing effect" or "worrying influence."
Its textual components add to its alarming impact.
We've heard much about the alarming impact of Facebook's echo chamber over the past two weeks.
Ducarme said the situation was having a particularly alarming impact on pregnant women.
One lecturer at Goldsmiths, who asked not to be named, warned that the high cost of student rents in London was having an alarming impact.
The results were startling, revealing in stunning detail the interconnected nature of the planet's atmospheric composition and temperature, providing crucial information on the glacial-interglacial cycles as well as the alarming impact of mankind's activity.
The most alarming impact of lead contamination is neurological damage to children's developing brains.
"Indigenous peoples of Alaska have seen alarming impacts from climate change already, and Shell's drilling will only make them worse," Faith Gemmill of RedOil, said in a statement, ahead of demonstrations against Shell drilling in Anchorage.
In fact it is a very risky target for all of us: so far, temperatures have increased by just 0.8C and we are already experiencing many alarming impacts, including the unprecedented melting of the Greenland ice sheet in the summer of 2012 and the acidification of oceans far more rapidly than expected.
Meanwhile, the private grief of the families of more than 240 public health workers who have died has also had an alarming public impact: it removes pillars in already fragile health systems, shrinking the pool of talent from which to rebuild devastated healthcare systems when international organisations leave.
More alarming, an environmental impact study by the Japanese government suggested that the river would have to be dammed and many families relocated.
During the fuel blockade he made some alarming claims about its impact on the National Health Service, which the Tories are scrutinising for evidence of exaggeration.
