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Earthquake Details
Magnitude 4.9
Date-Time Thursday, May 28, 2009 at 00:23:46 UTC
Wednesday, May 27, 2009 at 07:23:46 PM at epicenter
Time of Earthquake in other Time Zones
Location 14.534°N, 92.263°W
Depth 67 km (41.6 miles)
Region OFFSHORE CHIAPAS, MEXICO
Distances 40 km (25 miles) S of Tapachula, Chiapas, Mexico
90 km (55 miles) WSW of Quezaltenango, Guatemala
190 km (115 miles) W of GUATEMALA CITY, Guatemala
915 km (570 miles) SE of MEXICO CITY, D.F., Mexico
Location Uncertainty horizontal +/- 5.5 km (3.4 miles); depth +/- 6.8 km (4.2 miles)
Parameters NST=134, Nph=134, Dmin=541 km, Rmss=0.78 sec, Gp=173°,
M-type=body wave magnitude (Mb), Version=Q
Source USGS NEIC (WDCS-D)
Event ID us2009head
This event has been reviewed by a seismologist.
Earthquake Details
Magnitude 2.9
Date-Time Thursday, May 28, 2009 at 08:37:48 UTC
Thursday, May 28, 2009 at 01:37:48 AM at epicenter
Time of Earthquake in other Time Zones
Location 33.656°N, 116.759°W
Depth 17.7 km (11.0 miles)
Region SOUTHERN CALIFORNIA
Distances 11 km (7 miles) SSW (203°) from Idyllwild, CA
14 km (9 miles) NW (324°) from Anza, CA
17 km (10 miles) SE (130°) from Valle Vista, CA
28 km (18 miles) SW (229°) from Palm Springs, CA
104 km (65 miles) NNE (20°) from San Diego, CA
Location Uncertainty horizontal +/- 0.3 km (0.2 miles); depth +/- 0.6 km (0.4 miles)
Parameters Nph= 67, Dmin=7 km, Rmss=0.22 sec, Gp= 29°,
M-type=local magnitude (ML), Version=G
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR
Event ID ci14464376
This event has been reviewed by a seismologist.
DANICA COTO | Associated Press Writer
8:07 PM EDT, May 27, 2009
SAN JUAN, Puerto Rico (AP) — It's only the moon, emergency officials in Puerto Rico are telling nervous islanders who have feared that recent extreme tides portend a tsunami or biblical catastrophe.
Waters receded up to 50 feet (15 meters) this week during low tide on Puerto Rico's southern coast, sparking a flurry of calls to seismology and geological agencies from people worried about natural disasters or supernatural events. Tsunamis are sometimes preceded by a dramatic drop in sea level.
"There are people who have said it's a biblical sign," said Pedro Calixto, who lives in the southern coastal town of Guayama. "There are others who don't dare go into the ocean because they believe it's a supernatural thing."
Severe tide changes occur a couple of times a year worldwide, and are happening now because the moon is at its closest point to earth, said government seismologist Alberto Lopez Venegas. The closer the moon is, the stronger its gravitational pull on water.