Right now, everything is on track and #SpaceX is targeting the opening of #FalconHeavy’s launch window at 18:35 EDT (2235 UTC) this evening. The launch window extends to 20:32 EDT (0032 UTC). #ArabSat6A(📸: @mike_deep)
Falcon Heavy and Arabsat-6A are vertical on Launch Complex 39A. Currently targeting liftoff at 8:00 p.m. EDT; monitoring upper-level winds that could push us to the end of the window (8:32 p.m. EDT) → http://spacex.com/webcast
Current upper level winds, 5PM estimate, 8PM estimate
Whilst upper level winds have pushed launch back to 00:00 UTC there is good news downrange...Weather conditions around OCISLY are nominal! A swell wave height of 1.1m and wind speeds of 28 km/h are predicted for this evening.
Upper atmospheric wind shear is very high. Will have to postpone launch unless weather improves soon. — Elon Musk (@elonmusk) April 10, 2019
Look at that wind shear @NASASpaceflight @ChrisG_NSF