05 September 2012

7.6 Magnitude Earthquake In Costa Rica Triggers Pacific Basin Tsunami Warning


The initial tsunami watch for the Caribbean has been cancelled. The earthquake occurred 12 miles under the ocean on the Pacific side of Costa Rica.

Although the initial estimates of 7.9 magnitude were revised to 7.6, the warnings and watch for several countries in the Pacific rim are still in effect.

As always, listen to your official tsunami channels for updates and recommended actions.

NOSARA, Costa Rica (AP) — A powerful, magnitude-7.6 earthquake shook Costa Rica and a wide swath of Central America on Wednesday, collapsing some houses, blocking highways and causing panic, but there were no immediate reports of deaths.

The USGS said the 8:42 a.m. quake struck about 38 miles (60 kilometers) from the town of Liberia. It was centered about 25 miles (41 kilometers) below the surface. The magnitude initially was estimated at 7.9.

In the town of Hojancha near the epicenter, city official Kenia Campos said the quake knocked down some houses and landslides blocked two roads.

"So far, we don't have victims," she said. "People were really scared ... We have had moderate quakes but an earthquake (this strong) hadn't happened in more than 50 years."

There were no initial reports of damage or deaths in the capital of San Jose, said Douglas Salgado, a geographer with Costa Rica's National Commission of Risk Prevention and Emergency Attention.

Salgado said, however, officials were having problem accessing the earthquake zone or reaching people there and were flying over the area to assess damage to highways and other structures.

The earthquake didn't knock out phones or electricity in the capital 88 miles (141 kilometers) from the epicenter, Salgado said by telephone, but communications were down near the epicenter.

"There's chaos in San Jose because it was a strong earthquake of long duration," Salgado said. "It was pretty strong and caused collective chaos."

TSUNAMI BULLETIN NUMBER 002
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1525Z 05 SEP 2012

THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON AND CALIFORNIA.

THE EARTHQUAKE MAGNITUDE IS REDUCED TO 7.6 THE WARNING AREA IS REDUCED...THE WARNING IS CANCELLED FOR EL SALVADOR...HONDURAS...MEXICO...COLOMBIA...ECUADOR...
GUATEMALA AND PERU.

... A TSUNAMI WARNING IS IN EFFECT ...

A TSUNAMI WARNING IS IN EFFECT FOR

COSTA RICA / PANAMA / NICARAGUA

FOR ALL OTHER AREAS COVERED BY THIS BULLETIN... IT IS FOR INFORMATION ONLY AT THIS TIME.

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 1442Z 05 SEP 2012
COORDINATES - 9.9 NORTH 85.5 WEST
DEPTH - 46 KM
LOCATION - OFF COAST OF COSTA RICA
MAGNITUDE - 7.6

Source: tsunami.gov