The launch was made at 4:47 am Pacific standard time from Vandenberg air force base.
The first in a series of four next-generation weather satellites, known as the Joint Polar Satellite System-1 or JPSS-1, is in orbit after a twice-delayed liftoff from Vandenberg Air Force Base in California.
It's the first in a series of four next-generation USA weather satellites.
"Things went absolutely flawless today", said Omar Baez, NASA launch manager.
An hour after its launch, the satellite's power source was operating properly and would undergo three months of checks on its instruments before becoming fully operational, NASA says.
Officials have said the mission, including launch and satellite costs, add up to $1.6 billion.
Driverless cars take to United Kingdom roads
Jaguar has begun testing self-driving versions of its cars in real-world testing on the streets of its home city, Coventry. Tests have passed in a regular mode, on-road incidents during the test are not reported.
"Launching JPSS-1 underscores NOAA's commitment to putting the best possible satellites into orbit, giving our forecasters - and the public - greater confidence in weather forecasts up to seven days in advance, including the potential for severe, or impactful weather", said Stephen Volz, director of NOAA's Satellite and Information Service. It also tracks floods, droughts and fires and monitors volcanic eruptions.
After JPSS-1's deployment, the small ride-along satellites were ejected into orbit.
Polar-orbiting weather satellites have headed to space from Vandenberg for decades, but JPSS-1 features the most advanced technology NOAA has ever flown.
One in particular is called the Visible Infrared Imager - Imaging Radiometer Suite, which in addition to weather forecasting provides environmental assessments, information on sea surface temperatures and ice breaking in the Arctic.
"Emergency managers increasingly rely on our forecasts to make critical decisions and take appropriate action before a storm hits", said Louis W. Uccellini, director of NOAA's National Weather Service.