Earth Changes
The earthquake, which had a 2.7 magnitude, caused no damage but did cause a rumble of conversation across the county, Barb Nilson, a dispatcher at the sheriff's office, said Saturday.
Nilson lives in Springview, the seat of the extreme north-central Nebraska county. She was standing near her front door in her bare feet Friday evening, saying goodbye to her son and granddaughter, when she heard a boom and felt something bang the bottom of her house.
It was 8:11 p.m.
The KMA lifted the yellow dust warning at 4 a.m. yesterday as the storm weakened overnight. Nonetheless, the sandstorm would continue to affect the peninsula until today, the agency said.
"As the northwestern air current coming from the northern Chinese region to the peninsula will continue to be formed, there is a possibility of several additional bouts of yellow dust this week."
The sandstorm, which scientists blame on China's industrialization and deforestation, hit the nation Saturday for the fifth time this year. The level of PM10 -- particulate matter smaller than 10 micrometers in diameter -- in the southeastern island of Heuksan Saturday afternoon reached 2,847 micrograms per cubic meter, the highest level since the KMA began recording the level in 2003.
The storm, which earlier buffeted parts of northeastern China, brought strong winds and cut visibility in the capital.
Authorities issued a rare level five pollution warning, signalling hazardous conditions, and urged residents to stay indoors.
Sandstorms frequently hit the arid north of China in the spring, when temperatures start to rise, stirring up clouds of dust that can travel across China, to South Korea and Japan and even as far as the United States.

Molten lava vents from a rupture near the Eyjafjallajokull glacier in Iceland, as a volcano erupts early Sunday March 21, 2010, seen in this aerial photo.
There were no immediate reports of injuries or damage from the Eyjafjallajokull volcano, but a state of emergency was declared and scientists feared the eruption could trigger a larger and potentially more dangerous eruption at the Katla volcano.
Saturday's eruption, which occurred just before midnight (2000 EDT, 8 p.m. EDT), came weeks after a series of small earthquakes. Television footage showed lava flows along the fissure.
"This was a rather small and peaceful eruption but we are concerned that it could trigger an eruption at the nearby Katla volcano, a vicious volcano that could cause both local and global damage," said Pall Einarsson, a geophysicist at the University of Iceland's Institute of Earth Science.
At least 60,000 homes are without power and Queensland Premier Anna Bligh said initial reports suggest the damage is moderate-to-severe, although it's too early to assess the full extent of the damage, the Australian Broadcasting Corp. reported on its Web site.
Heavy rainfall and flooding are likely to continue about coastal and adjacent inland areas between Bowen and St Lawrence, the Bureau said. The cyclone is weakening rapidly and is expected to be downgraded below cyclone strength this afternoon, it said.
Writing in the journal Nature Geoscience, Australian and French scientists show that hydrothermal vents around underwater volcanoes in the Southern Ocean spew iron.
After billowing to near the surface, the mineral allows single-cell organisms called phytoplankton to bloom, soaking up the greenhouse gas in the process. The world's oceans are thought to remove 20 percent to 25 percent of the atmospheric carbon dioxide produced by human activities.

Heavy rain flooded this camp of homeless earthquake survivors in Port-au-Prince, Haiti, yesterday. Screaming residents were swept into eddies, and latrines overflowed.
The overnight downpour sent water coursing down the slopes of a former golf course that now serves as a temporary home for about 45,000 people.
There were no reports of deaths in the camp, a town-size maze of blue, orange and silver tarps behind the country club used by the U.S. Army's 82nd Airborne Division as a forward-operating base.
But the deluge terrified families who just two months ago survived the collapse of their homes in the magnitude 7 earthquake and are struggling to make do in tent-and-tarp camps that officials have repeatedly said must be relocated.
The quake was centered about 53 miles (85 km) north-northeast of Huehuetenango, Guatemala, at a depth of 51 miles (82 km), the U.S. Geological Survey said.
Saturday, March 20, 2010 at 18:08:09 UTC
Saturday, March 20, 2010 at 01:08:09 PM at epicenter
Time of Earthquake in other Time Zones
Location:
19.731°N, 75.279°W
Depth:
17.2 km (10.7 miles)
Region:
CUBA REGION
Distances:
45 km (30 miles) S of Guantanamo, Cuba
65 km (40 miles) ESE of Santiago de Cuba, Cuba
825 km (510 miles) ESE of HAVANA, Cuba
840 km (520 miles) SE of Miami, Florida









Comment: On February 5, 2010 we saw Pacific Ocean Volcano Erupts, on February 11, 2010 Montserrat Volcano Shoots Ash 9 Miles into Sky and: Undersea Volcanic Activity Contributing To Cooling.