SpaceX scrubbed its Starlink 10-39 mission 28 seconds before liftoff at Cape Canaveral Space Force Station on Thursday, Aug. 20, as worsening weather conditions forced a delay. The Falcon 9 rocket was scheduled to launch from Launch Complex 40 at 11:38 a.m. but teams called off the attempt just moments before ignition. The decision came as the U.S. Space Force’s 45th Weather Squadron reported a 40% chance of favorable launch conditions by the end of the four-hour window, down from an initial 80% forecast. Cumulus and anvil clouds, combined with rising surface electric fields, prompted the hold. No sonic booms were expected over Brevard County, a common concern for residents near the Space Coast.
The scrubbed launch was the second attempt for the Starlink 10-39 mission, which aims to deploy 29 broadband satellites into low-Earth orbit. SpaceX had previously postponed a similar mission on Aug. 11 due to similar weather challenges, though that flight eventually launched successfully. The Falcon 9’s first-stage booster was set to make its 30th flight, landing on the drone ship A Shortfall of Gravitas in the Atlantic Ocean. Weather delays are not uncommon for launches at Cape Canaveral, where summer heat and cloud cover frequently complicate operations.
SpaceX teams will now assess weather forecasts for the next available launch window, which could be as soon as Friday. The Starlink program has become a regular presence at the Space Force Station, with multiple missions scheduled through the end of the year. Local officials have noted the increased activity but emphasized that safety remains the top priority during launch attempts. The scrubbed mission highlights the delicate balance between SpaceX’s ambitious launch schedule and the unpredictable nature of Florida’s summer climate.
Residents near Launch Complex 40 reported no immediate disruptions from the scrubbed attempt, though some expressed frustration over the frequent delays. SpaceX has not yet announced a new target date for the Starlink 10-39 mission. With the next launch window approaching, teams will monitor weather conditions closely to avoid further delays. The outcome of this latest hold could influence future scheduling decisions for the Starlink program, which aims to expand global broadband coverage through its constellation of satellites.