early warning

British  

noun

1. advance notice of some impending event or development

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Example Sentences

That’s a problem only if vehicle ownership turns out to be like cable television subscriptions, where a departure by the young was an early warning sign.

From Barron's

Those strikes have included an early warning radar for a Terminal High Altitude Area Defense, or Thaad, system in Jordan, as well as other targets in Bahrain, Kuwait and Oman.

From The Wall Street Journal

"Students are particularly at risk of missing the early warning signs of meningitis because they can be easily confused with other illnesses such as a bad cold, flu or even a hangover," warn health officials.

From BBC

Because it requires relatively little equipment, the Jerk system could become an important early warning tool, particularly for volcanoes that are not closely monitored.

From Science Daily

After more than a decade of continuous real time monitoring on La Réunion, researchers believe the Jerk system could serve as a practical early warning tool for other volcanoes, particularly those with limited monitoring infrastructure.

From Science Daily