Sentence examples for highest alert level from inspiring English sources

All 103 nuclear power plants in the United States were placed on the highest alert level as a precaution, according to the Nuclear Regulatory Commission.

Brussels was put on its highest alert level on Saturday as Belgian officials warned the public to avoid crowds because of a "serious and imminent" threat of an attack.

Meanwhile Brussels was put on its highest alert level on Saturday as Belgian officials warned the public to avoid crowds because of a "serious and imminent" threat of an attack.

The capital had been locked down at the highest alert level, for "serious and imminent" threats, since Saturday morning, with schools, universities and the metro closed until Wednesday morning.

Access to some of these zones, particularly A and B, depended on the alert level (0 through to 5; 5 being the highest alert level rendering zones A-D inaccessible).

The state disaster relief board went to its highest alert level prior to the storm's arrival.

The American government remains at its highest alert levels.

In light of the activity, the USGS has issued a warning and code red, its highest alert levels, for Kilauea volcano and its summit as toxic gases and ash continue to inundate surrounding areas.

They all had amber weather warnings in place, the second-highest alert level, according to the Met Office.

Law enforcement authorities in several large cities increased security yesterday as the Bush administration put the nation on its second-highest alert level.

The volcano remains at the second-highest alert level, meaning it is still dangerous, but the decision means that thousands of people who left their homes can return, said Yousana Siagian, the country's chief volcanologist.