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Daily archives "July 27, 2016"

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Countdown progressing for NROL-61 launch

ULA's Atlas V stand ready to launch classified NROL-61 payload. Photo credit: ULA

ULA’s Atlas V stand ready to launch classified NROL-61 payload. Photo credit: ULA

The countdown is progressing towards Thursday’s 8:37 a.m. launch of the classified NROL-61 payload on a United Launch Alliance (ULA) Atlas V rocket from SLC-41 at Cape Canaveral Air Force Station. Weather remains favorable, with only a 10% chance of violating weather constraint criteria. This will be the third NRO launch of the year, and the sixth launch for ULA.

ULA will begin providing coverage of the launch on their YouTube channel approximately 20 minutes prior to the scheduled launch time.

Favorable forecast for NROL-61

ULA's Atlas V, carrying a classified payload for the NRO, stands at the pad for the NROL-61 mission. Photo credit: ULA

ULA’s Atlas V, carrying a classified payload for the NRO, stands at the pad for the NROL-61 mission. Photo credit: ULA

The weather forecast for the Thursday, July 28, 2016 launch of NROL-61 has improved to 90% favorable. Less than 24 hours out from the anticipated 8:37 a.m. EDT launch time on an Atlas V 421, the forecast gives a 10% chance that conditions will violate weather constraint criteria, with the primary concern being cumulus clouds. Should a delay be necessary, the following day’s forecast remains favorable, though the possibility of violating weather constraints increases to 20%.

United Launch Alliance plans to start coverage at 8:17 a.m. EDT. Visit the United Launch Alliance website for more information.