The phrase "a powerful indicator for" is correct and usable in written English.
It can be used when discussing something that serves as a strong sign or signal of a particular condition or outcome.
Example: "The increase in sales is a powerful indicator for the overall health of the economy."
Alternatives: "a strong sign of" or "a significant marker for".
The ways nerves conduct signals can be a powerful indicator for diseases such as multiple sclerosis and can even detect certain types of intoxication.
As such, our extracellular recording approach provides a powerful indicator for the development of algae blooms and to probe ecological and physiological stress conditions in diatom populations.
This paper investigates the effects of traffic condition, distance to road and background landscape on the perceived integrated impact of noise and visual intrusion of motorways, and explores if noise exposure can be a powerful indicator for the perceived integrated impact.
The empirical findings from research into the patterns of repeats and near repeats has led some commentators to suggest that recent incidents provide a powerful indicator for predicting where and when crime is likely to take place (Bowers et al. 2004; Johnson and Bowers 2004b; Pease 1998; Skogan 1996).
And eduction is a powerful indicator for health inequality in rural China [ 55].
Multicolor FISH probing different genomes in an allopolyploid can be a powerful indicator for identifying such changes.
Electrophysiology is a powerful indicator of phenotype for electrically-excitable cells such as myocytes and neurons.
The study is a powerful indicator of the importance of planning for retirement, no matter how much money you make.
But dismissing Walt's assault of Skyler as par for the course is a powerful indicator of how we treat non-fictional sexual assault survivors.
The first donations Pitch In For Baseball made served as a powerful indicator of the foundation's ability to improve the lives of others by providing baseball equipment.
