Seismo-Watch Archive of
Large Moment Magnitude (Mw) Earthquakes

January 1991
Total Number of Mw >6.0 Earthquakes per Month = 10
Cumulative Number of Mw >6.0 Earthquakes per Year = 10

Total Number of Mw >7.0 Earthquakes per Month = 1
Cumulative Number of Mw >7.0 Earthquakes per Year = 1

Date

Time

Lat

Lon

Depth

Mw
Loction**
Jan 1

0006

18.06N

105.84W

350

6.3*
Jan 1

1728

21.20S

174.14W

291

6.0*
Jan 3

1318

07.17S

148.50E

140

6.2
Jan 5

1457

23.61N

095.90E

197

7.0*
Jan 8

2204

18.05S

173.53W

329

6.2
Jan 9

1508

05.39S

151.83E

277

6.2
Jan 15

1343

05.99S

154.46E

582

6.0*
Jan 23

112

51.96N

178.83E

108

6.5
Jan 25

1738

02.15S

139.02E

220

6.3
Jan 31

2303

35.99N

070.42E

142

6.9*
Source: U.S. Geological Survey, National Earthquake Information Center; Harvard Geophysical Observatory, Harvard University (magnitudes with " * " are HRV). ("**" = Physical locations are not available from these cataloges and will have to be hand entered at a future date.

Disclaimer and Limitations
All data are preliminary and subject to change. Much of the information, including time, date, location, depth and magnitude, are determined by automatic processing. Future analysis may develop changes in these data. This data may not be reproduced, in part or in full, or by any form, including re-fax or re-mail transmissions, without prior written authorization from Advanced Geologic Exploration.

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