
How are earthquakes measured? Get the details on magnitude scales and how today's event stacks up
CBSN
An earthquake rattled much of the Northeast on Friday morning, with shaking felt across the New York City metropolitan area and in communities from Baltimore and Philadelphia up through New England.
The quake had a magnitude of 4.8, according to the U.S. Geological Survey. No major damage was reported as of midday Friday, officials said.
Here's how earthquake strength is measured and what different quake magnitudes mean.

Trump's military parade tomorrow isn't the first in the U.S. — but they're rare. Here's a look back.
Washington — President Trump is hosting a parade celebrating the 250th anniversary of the U.S. Army on Saturday, bringing tanks and soldiers to the streets of Washington, D.C., for the capital's first major military parade in more than three decades.

A military parade through the streets of Washington, D.C., is being held to celebrate the U.S. Army's 250th anniversary on Saturday, June 14 — which also happens to be President Trump's 79th birthday. Army officials say about 6,600 soldiers, 150 vehicles and more than 50 aircraft are set to participate.