From Longman Dictionary of Contemporary Englishbe alert to somethingbe alert to somethingCAREFULto know about or understand something, especially a possible danger or problem The authorities should have been alert to the possibility of invasion. → alert
Examples from the Corpus
alert to the possibility• The therapist should be alert to the possibilities of a patient losing all hope.• Third parties need to be alert to the possibility of change and to the actual practices of the body.• Be alert to the possibility of change to cross-talk between four people, which is much more difficult for the speechreader.• Music publishing companies are always alert to the possibility of signing new songwriting talent.• However, the teacher was still alert to the possibility that some children might use collaboration as a cover. 