High-Tech Weather Satellite to Launch Early Saturday After Delays: Watch Live

The United Launch Alliance Delta II rocket carrying the Joint Polar Satellite System 1 weather satellite stands atop its launchpad at Vandenberg Air Force Base in California. The satellite will launch Nov. 18, 2017.
The United Launch Alliance Delta II rocket carrying the Joint Polar Satellite System 1 weather satellite stands atop its launchpad at Vandenberg Air Force Base in California. The satellite will launch Nov. 18, 2017. (Image credit: NASA/Glenn Benson)

A next-generation satellite built to make global weather forecasts more accurate than ever will now launch into space no earlier than Saturday (Nov. 18) after two delays earlier this week, NASA officials said.

The satellite, called the Joint Polar Satellite System-1 (JPSS-1), is scheduled to lift off from Vandenberg Air Force Base in California Saturday at 4:47 a.m. EST (0947 GMT) atop a Delta II rocket, NASA officials said in an update. You can watch the launch live here, courtesy of NASA TV, beginning at 4:15 a.m. EST (0915 GMT).

Initial attempts to launch JPSS-1 on Tuesday and Wednesday (Nov. 14 and 15) were delayed, first by a rocket issue and boats inside the restricted safety zone for the mission; and later due to unacceptably high winds and another launch range concern.

The $1.6 billion JPSS-1 mission is the first in a new fleet of four advanced satellites designed to track Earth's weather like never before for the National Oceanic and Atmospheric Administration (NOAA) and NASA.

"JPSS represents significant technological and scientific advancements in observations used for severe weather prediction and environmental monitoring," NASA officials said in a statement. "The JPSS system will help increase weather forecast accuracy from three to seven days."

The satellite will circle the Earth in a polar orbit at an altitude of 512 miles (824 kilometers), completing 14 orbits of the planet each day.

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Tariq Malik
Editor-in-Chief

Tariq is the Editor-in-Chief of Space.com and joined the team in 2001, first as an intern and staff writer, and later as an editor. He covers human spaceflight, exploration and space science, as well as skywatching and entertainment. He became Space.com's Managing Editor in 2009 and Editor-in-Chief in 2019. Before joining Space.com, Tariq was a staff reporter for The Los Angeles Times covering education and city beats in La Habra, Fullerton and Huntington Beach. In October 2022, Tariq received the Harry Kolcum Award for excellence in space reporting from the National Space Club Florida Committee. He is also an Eagle Scout (yes, he has the Space Exploration merit badge) and went to Space Camp four times as a kid and a fifth time as an adult. He has journalism degrees from the University of Southern California and New York University. You can find Tariq at Space.com and as the co-host to the This Week In Space podcast with space historian Rod Pyle on the TWiT network. To see his latest project, you can follow Tariq on Twitter @tariqjmalik.