The city is testing out a new alert system for emergencies.

The system will rely on email, text messages and reverse 911 calls to inform residents of situations, such as the approach of major storms or utility outages.

Called "Notify NYC,” the mayor says for now, it is only being rolled out in Lower Manhattan, the Northeast Bronx, the Rockaways and Southwest Staten Island. Depending on how its success, it may later be implemented citywide.

New Yorkers who live in one of the test areas and would like to take part, visit the city’s website at www.nyc.gov.