Tuesday, March 20, 2012

UPDATE: Massive 7.6 EARTHQUAKE SLAMS OXACA, MEXICO; TSUNAMI WARNING ISSUED

10-degree map showing recent earthquakesUPDATE: A TSUNAMI BULLETIN HAS BEEN ISSUED AFTER THE EARTHQUAKE in MEXICO DURING THIS PAST HOUR:


NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1813Z 20 MAR 2012

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

... TSUNAMI INFORMATION BULLETIN ...

THIS BULLETIN IS FOR INFORMATION ONLY.

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES.  ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE DECISIONS REGARDING 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 -  1803Z 20 MAR 2012
 COORDINATES -  17.0 NORTH   98.1 WEST
 DEPTH       -   10 KM
 LOCATION    -  GUERRERO  MEXICO
 MAGNITUDE   -  7.8

EVALUATION

 A DESTRUCTIVE WIDESPREAD TSUNAMI WAS NOT GENERATED BASED ON
 EARTHQUAKE AND HISTORICAL TSUNAMI DATA. HOWEVER, THERE IS THE
 POSSIBILITY OF SOME LOCAL TSUNAMI EFFECTS.  THIS EARTHQUAKE IS
 LOCATED INLAND FROM THE COAST.

THIS WILL BE THE ONLY BULLETIN ISSUED FOR THIS EVENT UNLESS
ADDITIONAL INFORMATION BECOMES AVAILABLE.

THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON...CALIFORNIA.

pacific.TIBPAC.2012.03.20.1813 map



By Randy Economy
A MASSIVE 7.6 earthquake has just hit the area of Oxaca, Mexico. Here are the preliminary details from the US Geological Society.

Magnitude 7.6 - OAXACA, MEXICO

2012 March 20 18:02:48 UTC

Earthquake Details

  • This event has been reviewed by a seismologist.
Magnitude7.6
Date-Time
  • Tuesday, March 20, 2012 at 18:02:48 UTC
  • Tuesday, March 20, 2012 at 12:02:48 PM at epicenter
Location16.662°N, 98.188°W
Depth17.5 km (10.9 miles)
RegionOAXACA, MEXICO
Distances
  • 25 km (15 miles) E (95°) from Ometepec, Guerrero, Mexico
  • 42 km (26 miles) NNW (335°) from Pinotepa Nacional, Oaxaca, Mexico
  • 87 km (54 miles) SW (219°) from Tlaxiaco, Oaxaca, Mexico
  • 162 km (101 miles) WSW (255°) from Oaxaca, Oaxaca, Mexico
  • 186 km (115 miles) E (96°) from Acapulco, Guerrero, Mexico
Location Uncertaintyhorizontal +/- 15.8 km (9.8 miles); depth +/- 6.5 km (4.0 miles)
ParametersNST=438, Nph=440, Dmin=312.8 km, Rmss=0.88 sec, Gp= 79°,
M-type=regional moment magnitude (Mw), Version=9
Source
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event IDusc0008m6h
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