Another strong aftershock rattled northeast Japan Monday, exactly one month to the day when a massive 9.0 earthquake and resulting tsunami devastated the island nation.

It was the second major aftershock in less than a week. The 7.0 quake triggered a tsunami warning for the already crippled coast, but fortunately a big wave never formed. There were no reports of damage or injuries.

The strong aftershock struck just hours after people bowed their heads in silence to commemorate the one-month mark since the disasters struck, killing at least 25,000 people and creating the biggest nuclear crisis in years.

"Even after a month, I still cry when I watch the news," said Marina Seito, 19, a student at a junior college.

People in hard-hit towns gathered for ceremonies at 2:46 p.m., the exact moment the quake hit.

"My chest has been ripped open by the suffering and pain that this disaster has caused the people of our prefecture," said Yuhei Sato, the governor of Fukushima, home to the damaged plant at the center of the nuclear crisis.

"I have no words to express my sorrow," he said.

CBN's Operation Blessing continues to work in Japan provide much needed relief and assistance.