CAPE CANAVERAL, Florida – The morning half of a double SpaceX launch scheduled for today has been scrubbed. But the evening launch of a Falcon 9 rocket carrying a SAOCOM 1B satellite from Space Launch Complex 40 still remains ‘GO’, SpaceX announced.

“Standing down from today’s launch of Starlink due to inclement weather during pre-flight operations. Next launch opportunity is Tuesday, September 1 at 9:29 a.m. EDT, pending Range acceptance,” SpaceX tweeted.

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“Targeting launch of SAOCOM 1B at 7:18 p.m. EDT tonight. Falcon 9 and SAOCOM 1B are vertical on SLC-40. Weather continues to be 40% favorable for liftoff,” SpaceX tweeted.

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Attempted Ground Landing, Sonic Boom

After first stage separation, SpaceX will attempt to land the first stage of the Falcon 9 rocket on land at Cape Canaveral Air Force Station’s Landing Zone 1 or 2 this evening.

Residents of the communities of Cape Canaveral, Cocoa, Cocoa Beach, Merritt Island, Mims, Port Canaveral, Port St. John, Rockledge, Scottsmoor, Sharpes, and Titusville, Florida, are most likely to hear a sonic boom, although what Brevard County residents experience will depend on weather conditions and other factors.

Launch Weather 80% ‘GO’

According to the latest forecast from the U.S. Air Force 45th Weather Squadron, there is a 40% chance of favorable weather for the launch. The primary concerns are Thick Cloud Layers Rule, Cumulus Cloud Rule, Anvil Cloud Rules.