The second round was suspended due to darkness but rain was the main culprit in the stoppage. There was a weather delay that lasted over an hour and several groups were unable to complete their round.
Those 19 remaining players will return to the course at 7:45 a.m. (ET) Saturday to finish the second round.
Overnight leader Nancy Scranton shot an even-par 72 and is tied for third place with Dorothy Delasin (67) and Wendy Ward (70). The trio is knotted at 6-under-par 138.
Ochoa parred her first four holes but knocked an 8-iron to 10 feet to set up birdie at the par-3 fifth. She parred No. 6 but went on a birdie tear to close her front nine.
At the par-5 seventh, Ochoa missed the green short with a 3-wood, then chipped to a foot for the tap-in birdie. Her second in a row came thanks to a 15-footer at eight but her best shot of the run came at the ninth. Ochoa hit a 4-iron to seven feet and converted the birdie putt to get to 6 under par for the championship.
Ochoa, the former University of Arizona standout, made her first mistake of the round at the 11th and it started with a drive into the rough on the left side. She played a 9-iron 70 feet from the hole and three-putted for bogey.
Ochoa reclaimed the lost stroke at the par-5 14th when she hit a wedge to three feet. She recorded her final birdie of the round at the par-3 16th. Ochoa hit a 7-iron to 15 feet and ran home the putt to grab her share of first place.
Ochoa was a dominant collegiate player but has yet to visit the winner's circle in her year-plus on the LPGA Tour. Last week, she shared the 54-hole lead of the Michelob Ultra Open with Cristie Kerr but Ochoa only managed an even-par 71 on Sunday and lost to Se Ri Pak.
'I learned I need to try and be aggressive,' said Ochoa, referring to her experience last week in Williamsburg. 'I need to try and go for it, go straight for the pin and make a lot of birdies out there.'
Hurst, a three-time Solheim Cupper, started on the back nine Friday and broke into red figures with a tap-in birdie at the 11th. She missed a 10-footer to save par at the 16th but closed her opening nine with back-to-back birdies at 17 and 18.
She continued her hot streak on the front side with a 10-foot birdie putt at the first. Hurst dropped a shot at No. 2 when she missed the green with an 8-iron but reached the green in two at the par-5 seventh and two-putted from 20 feet to make birdie.
'I played pretty steady,' said Hurst, who last won on tour in 2000. 'I made a couple of bogeys with short irons, but I putted well. I'm looking forward to the weekend.'
Stacy Prammanasudh (72) and Wendy Doolan (70) are tied for sixth at minus- 5. Gloria Park (71) and Becky Morgan (67) share ninth at 4-under-par 140.