The phrase "a powerful indicator of" is correct and usable in written English.
It can be used when discussing something that serves as a strong sign or evidence of a particular situation, trend, or outcome.
Example: "The increase in sales is a powerful indicator of the company's growing popularity in the market."
Alternatives: "a strong sign of" or "a significant marker of".
Mumbai will forever be associated with cinema - but the story of how Bollywood's home has rescued its film festival through people-power is a powerful indicator of just important that bond is to the city.
The findings reported in all five papers indicate that online visual representations of female genitalia can be a powerful indicator of socially desirable and undesirable genital characteristics.
"It is a powerful indicator of where America will end up on politics, culture, family life.
Electrophysiology is a powerful indicator of phenotype for electrically-excitable cells such as myocytes and neurons.
Our city council re-election victory in Seattle, Washington, this fall is a powerful indicator of the prevailing mood.
The study is a powerful indicator of the importance of planning for retirement, no matter how much money you make.
In the multivariate model, the health-related quality of life (15D score) appeared to be a powerful indicator for utilization of health care services (p = 0.0004) (Table 3).
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.
An earlier study of ours has shown that FIM is associated with social care service use, and HRQoL 15D appears to be a powerful indicator for the utilization of health care services [ 27].
L&D can be considered a powerful indicator, or metric, of social vulnerability, displaying the impact of climate change in a visible and concrete form, and thereby supporting the acknowledgment that climate change is already happening.
If a seismic price tag becomes a more powerful indicator of masterworks than scholarly consensus, provenance and authentication, the sale sets a frightening precedent for, as Saltz put it, #FakeArtNews.
