'Welcome home, Artemis': Crew celebrates historic 10-day moon mission

Splashdown remains tentatively scheduled for 8:07 p.m. ET on Friday, likely within 100 miles of the San Diego coast, according to NASA. However, the exact timing could still change depending on various conditions.

Weather-wise, it's still looking like a go with no big changes to the forecast at this time. The criteria required for splashdown are expected to be met off the coast of San Diego. Rain should remain well to the north of the region, and clouds shouldn't exceed the safety threshold.

While conditions continue to look favorable, weather and ocean conditions will remain closely monitored right up to retry to determine if any small trajectory shifts are required to ensure the Orion spacecraft arrives home in the most favorable conditions possible.

Weather criteria needed for a nominal splashdown and recovery, according to NASA, are:

-Significant wave height must be less than six feet
-No precipitation or lightning within 35 miles
-Winds under 28 mph
-Good visibility and minimal cloud cover below a certain height

-ABC News' Daniel Peck

When the Artemis II crew begins reentry into Earth's atmosphere, the world will need to wait about six minutes for that proof -- the length of time that Mission Control will lose communication with the astronauts.

Unlike the 40-minute loss of communications experienced when the Orion crew module passed behind the moon, which physically blocked radio signals from reaching the spacecraft, loss of communication during reentry results from Orion's passage through Earth's atmosphere.

Read more here.

-ABC News' Briana Alvarado

The Artemis II crew was awakened on the final day of their mission by the song "Run to the Water" by Live, followed by the Zac Brown Band song "Free."

Brown then shared a personal audio message with the crew.

The crew will prepare for their day and then spend time configuring the cabin for reentry, which will begin at approximately 7:53 p.m. ET.

Splashdown is still scheduled for 8:07 p.m. ET.

NASA says the Artemis II return is on track, with teams focused on the final phase of the mission: the reentry, splashdown and recovery sequence.

From the moment Orion enters Earth’s atmosphere to the time it splashes down in the Pacific Ocean, the entire sequence takes about 13 minutes.

“It’s 13 minutes of things that have to go right,” NASA Flight Director Jeff Radigan said during the final mission status briefing, adding that in his view, “it’s more, in my head, about an hour and a half of things that have to go right.”

Officials also addressed public visibility of entry and splashdown along the West Coast. Based on the planned trajectory, Radigan said, “I don’t expect it to be visible for the folks in California,” noting that the spacecraft will be targeting a landing area well offshore.

He cautioned the public to stay clear of the area, pointing to the debris that is expected to fall.

NASA confirmed a small leak in the service module’s oxidizer system, but officials said it will not affect the return.

-ABC News' Briana Alvarado