Eastside fire and rescue crews were scouring the Snoqualmie River below the falls on Sunday for a 29-year-old man who disappeared into the fast-moving waters apparently while trying to rescue a dog.

The search was suspended Sunday night for a 29-year-old man who disappeared into the fast-moving waters of the Snoqualmie River apparently while trying to rescue a dog.

Crews from Eastside fire and rescue will resume searching Monday morning.

King County sheriff’s Sgt. M.B. Janasz said witnesses reported that a man and a woman were playing with two dogs when one of the animals got pulled into a whirlpool in the river below Snoqualmie Falls around 3:50 p.m. The man went into the water to help the dog but became trapped in the current himself.

Witnesses reported seeing the man surface briefly once, then disappear, Janasz said.

Unlimited Digital Access. $1 for 4 weeks.

A 29-year-old woman who also apparently went into the water was rescued. She was reportedly in satisfactory condition suffering from hypothermia and was transported to Overlake Hospital Medical Center in Bellevue.

Crews from King County, Fall City Fire Department and Eastside Fire and Rescue were on the scene Sunday afternoon, and the King County Sheriff’s Office had a dive team in the water, said Fire and Rescue Battalion Chief Glenn Huffman.

King County sheriff’s spokesman Sgt. John Urquhart said the water is “very fast and very cold and not conducive to survival this time of year, even for the strongest of swimmers.”

The dogs survived, Huffman said, adding that people should think twice about going into water to rescue their animals. “Dogs are strong swimmers,” he said.

Seattle Times staff reporter Mike Carter contributed to this report. Janet I. Tu: 206-464-2272 or jtu@seattletimes.com and Mike Carter: 206-464-3706 or mcarter@seattletimes.com.