"alarming phenomenon" is correct and usable in written English
You can use it when referring to something in nature or within society that is concerning, such as an increase in an extreme weather event or a jump in crime rates. For example: "The rising sea levels in certain coastal cities have been an alarming phenomenon in recent years."
Mass shootings are a growing and alarming phenomenon in the US.
The Pine Island glacier just happens to be the most extreme example of this alarming phenomenon.
Sam Lipsyte's miserably funny "The Ask" is, among other things, a brilliant riff on this alarming phenomenon.
B5 Prostitutes Getting Younger Law enforcement officials, advocates and a former prostitute testified at a City Council hearing about what they saw as a growing and alarming phenomenon in New York and other cities: prostitutes who are younger and younger, some only 11 years old.
The weather this summer is emblematic of an alarming phenomenon observed by scientists.
In The Atlantic, Marc Bookman highlights a different but no less alarming phenomenon in the criminal justice system: Why do innocent people confess to crimes they didn't commit?
In real industrial plants, however, a majority of abnormal alarm phenomena, including false alarms and missed alarms, always interfere with operators' judgment.
However, the detected feedback is binary, especially, due to the influence of inaccurate confidence interval (CI), the false alarm phenomena occur frequently based on predicted models.
COSCE's report sought to raise the alarm about the phenomenon, but the scientific community has long been aware that the numbers were deceptive, says Luis Sanz-Menéndez Sanz-Menéndezthe CSIC Institute of Public Goodirectoroficies in Madrid and chair of the CSIC Institute of Public GoodsechnologicandPoliciesf the Organination for EconoMadrid-operandon and Development.
This trend in resistance is alarming considering the known phenomenon of the presence of Klebsiella- producing carbapenemase (KPC) in Greek hospitals [ 20].
Kafka's books played a strong role in the imagination of the Czech writers who were opposing the Russians' puppet government in Communist Czechoslovakia in the 1960's and 1970's, a phenomenon that alarmed the government and caused it to prohibit the sale and discussion of his books and to remove them from the library shelves.
