JPSS-1, Delta II ‘Go’ for Launch

Gaseous oxygen vents away from the Delta II rocket as the vehicle awaits liftoff.
Gaseous oxygen vents from the Delta II rocket as the vehicle awaits liftoff. Image credit: NASA TV

Countdown clocks are holding at the T-4 minute mark. Weather is “go” and winds are cooperating as well. There are no technical issues in work.

The countdown is expected to resume at 1:43 a.m. PST, leading to a 1:47:36 a.m. liftoff of the Delta II carrying NOAA’s JPSS-1 satellite.