Google Maps Adds 25 Million New Building Footprints; Tsunami Data Now in Google Public Alerts for U.S. & Canada

Google Maps expands the coverage of building footprints -- now, you can see 25 million new building footprints that have been added to Maps on desktop and mobile."These building footprints, across major metropolitan regions in the United States, including Houston, Los Angeles, Chicago, Miami, and the San Francisco Bay Area - complete with height detail, […]

Google Maps expands the coverage of building footprints -- now, you can see 25 million new building footprints that have been added to Maps on desktop and mobile.

"These building footprints, across major metropolitan regions in the United States, including Houston, Los Angeles, Chicago, Miami, and the San Francisco Bay Area - complete with height detail, are algorithmically created by taking aerial imagery and using computer vision techniques to render the building shapes," Google announced.

"This process enables us to provide more building footprints and a more comprehensive and detailed map than ever before."

Those interested can help ensure that the building footprints are accurate and up-to-date by using Google Map Maker tool. In addition to improving the shapes, "you can also assign your favorite local business to an existing building or draw the building footprint for that business using the community mapping tool," Google adds.

Expanded coverage of 25 million building footprints in Google Maps

Also, the Crisis Response team today launched "tsunami alerts for Public Alerts" in the U.S. and Canada, and will be rolling out with additional areas in the coming months.

For those news, "Public Alerts are designed to bring you emergency alerts when and where they're relevant to you."

"With today's launch of tsunami data in Public Alerts, relevant tsunami alerts will be accessible to you on the Google Public Alerts page and on Google Maps (see Public AlertsFAQ for details)," Google posted.

The new alert details page for tsunamis will typically include the following information:

  • "A map of the affected area, and any locations affected. The date and time that the alert was issued.
  • The estimated arrival times and the estimated height of the waves.
  • Any action that authoritative sources recommend you take," informs Google.

Here's what the alert details page would have looked like for a tsunami warning issued earlier this year.

Tsunami alerts in Google Public Alerts launched in the U.S. and Canada