Launch Day: Weather is 100% Favorable for SWOT Launch

Meteorologists with the U.S. Space Force’s Space Launch Delta 30 Weather Squadron are predicting a 100% chance of favorable weather conditions for launch, with no primary weather concerns.

NASA Updates SWOT Launch Date, TV Coverage

NASA, the French space agency Centre National d’Études Spatiales, and SpaceX now are targeting 3:46 a.m. PST on Friday, Dec. 16, for launch of the Surface Water and Ocean Topography (SWOT) mission.

After SpaceX’s Falcon 9 rocket went vertical on the pad at Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California, teams identified moisture in two Merlin engines on the rocket’s first stage booster. Teams completed inspections of the rocket’s engines today, but will use the additional time to complete data reviews and analysis before a launch attempt.

The SWOT satellite is healthy, and the weather forecast remains favorable for liftoff on Friday morning. Live launch coverage will begin at 6 a.m. EST (3 a.m. PST) on Friday on NASA Television, YouTubeTwitter, the NASA app, and the agency’s website.

Flight Readiness Review Complete, SWOT Satellite Secured in Payload Fairing

Inside the SpaceX facility at Vandenberg Space Force Base in California, a technician assists as a crane lowers the Surface Water and Ocean Topography (SWOT) satellite onto the payload adapter on Dec. 5, 2022. SWOT is scheduled to lift off aboard the SpaceX Falcon 9 rocket from Vandenberg on Dec. 15, 2022, at 3:46 a.m. PST.
Inside the SpaceX facility at Vandenberg Space Force Base in California, a technician assists as a crane lowers the Surface Water and Ocean Topography (SWOT) satellite onto the payload adapter on Dec. 5, 2022. SWOT is scheduled to lift off aboard the SpaceX Falcon 9 rocket from Vandenberg on Dec. 15, 2022, at 3:46 a.m. PST. Photo credit: USSF 30th Space Wing/Steven Gerl

NASA, SpaceX, and Surface Water and Ocean Topography (SWOT) launch managers met today, Dec. 9, to conduct a Flight Readiness Review (FRR) at Vandenberg Space Force Base in California. During the FRR, teams provided an update on the mission status, closed out actions from previous readiness reviews, and certified the readiness to initiate final launch preparation activities.

A collaboration between NASA and the French space agency Centre National d’Études Spatiales (CNES), with contributions from the Canadian Space Agency (CSA) and the UK Space Agency, SWOT will be the first satellite to survey nearly all water on the Earth’s surface. Its instruments will observe the ocean’s surface topography in fine detail, as well as measure how bodies of water change over time.

Encapsulated inside the SpaceX Falcon 9 rocket’s payload fairing, SWOT is now ready for its next major milestone. Over the next couple of days, technicians will horizontally integrate the encapsulated satellite to the Falcon 9.

Liftoff is scheduled for 3:46 a.m. PST on Thursday, Dec. 15, from Vandenberg’s Space Launch Complex-4 East. NASA’s Launch Services Program (LSP), based at the agency’s Kennedy Space Center in Florida, is managing the launch service.