The phrase "alerts were raised" is correct and usable in written English.
It can be used in contexts where warnings or notifications have been issued regarding a particular situation or issue.
Example: "As the storm approached, alerts were raised to inform residents of potential flooding."
Alternatives: "warnings were issued" or "notifications were sent".
In contrast, only 16 alerts were raised about other sports over the same period.
Since the attacks terrorism alerts were raised in Belgium, while German and UK football stadiums have also been on high alert.
After terror alerts were raised in 2003 and 2004 whenever Bush's numbers were low, speculations went viral in the blogosphere that the alerts were being timed politically to improve Bush's chances of reelection.
Figures from the European Sports Security Association, a trade body that represents 18 bookmakers including William Hill and Ladbrokes, show that 49 suspicious gambling alerts were raised about tennis in the first nine months of 2015.
The Office for National Statistics performs a statistical analysis on a monthly, quarterly and annual basis, using the cumulative sum technique, which is the basis upon which surveillance alerts are raised within the system.
We apply a cumulative sum (CuSum) control chart to each of these time series and mark the time stamps at which CuSum alerts are raised.
The detection component uses the selected statistical method(s) on all activated diseases and sends notification emails if any alerts are raised.
The terror alert was raised to orange for those sites in New York, Washington and New Jersey.
If an alert is raised, proceedings will be paused for up to 70 days for the Home Office to investigate.
Authorities shut part of Sofia Airport, in the country's capital, after an alert was raised about the suspicious vehicle today.
The request came shortly after the nationwide terror alert was raised to orange, representing a high risk of terror attack.
