Have You Seen Missing Sacramento Motorcyclist Alan Porter?

SACRAMENTO (CBS13) — A Sacramento man left on a motorcycle ride 10 days ago and hasn't been seen since he filled up at a gas station.

It was pump No. 5 at the 76 station on Alhambra Boulevard where Alan Porter was last seen in video. That video is one of very few clues Sacramento Police have.

Alan's daughter is desperate to find any information about her father.

HELP OUT: www.findalanporter.com

"You have no idea what that feels like to truly lose somebody and have no information on where they are," she said.

Alan's wife, Marjorie Porter, says there are still few clues on the retired architect's whereabouts.

"The ATM hasn't been used, credit cards haven't been used since that morning," she said.

His family says the 58-year-old loved riding to remote areas.

"We know that he loved all of the motorcycle rides in Sacramento, the foothills and even up in the Sierra," she said.

At 10:11 a.m. on April 29, street cameras picked up Porter leaving his Curtis Park home on his blue 2004 Yamaha. Ten minutes later, grainy gas station video shows him pulling up to the pump at Alhambra and P Streets.

That was the last time he was seen.

With no cellphone and no note left behind, Porter's route that day is a mystery.

His family is combing maps of his favorite routes. They've sent search teams to scour those areas on the ground and in the air.

"We have done our search radius, 100 to 150 miles," she said.

Sacramento Police don't suspect foul play, but Alan's family knows something's wrong.

Alan was last seen wearing a black shirt, black pants and a white full-faced helmet. His family is asking anyone who may have seen him to contact them at find.alan.porter(at)gmail.com.