The Cold War-era rocket, which appeared to be targeted at a major air base in the kingdom's south, was brought down by Patriot missiles, officials say.
War in Yemen has trapped hundreds of Americans there. We hear from two Yemeni-Americans, a mother and daughter from Michigan, as they arrive in nearby Djibouti, having fled the conflict.
The temporary truce comes amid an upsurge in Saudi-led airstrikes, including one in the capital that hit the private residence of former President Ali Abdullah Saleh, said to be a rebel ally.
Some land routes are blocked and boats are scarce. As a result, many refugees who just arrived in the African nation of Djibouti are from Yemen's small professional class.
Saudi Arabia says the cease-fire will help get much-needed humanitarian aid into Yemen, but the offer is good only if Houthi rebels comply with the deal.
Fresh fighting around Najran comes after a nearly six-week Saudi-led air campaign against Houthi rebels. Aid agencies urge a halt to bombing Yemen's airports so humanitarian supplies can be delivered.
Photographer Alex Potter arrived in Yemen in 2012 as it was going through an uprising, part of the broader Arab upheaval. Since then, she's grown deeply attached, even as it has fallen into chaos.
Much of the world is skeptical about the wisdom of the bombing raids in Yemen. But Saudis are rallying around their new king, Salman, and his son, the defense minister.