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

February 1991
Total Number of Mw >6.0 Earthquakes per Month = 9
Cumulative Number of Mw >6.0 Earthquakes per Year = 19

Total Number of Mw >7.0 Earthquakes per Month = 1
Cumulative Number of Mw >7.0 Earthquakes per Year = 2

Date

Time

Lat

Lon

Depth

Mw
Loction**
Feb 9

0208

15.34S

176.90W

276

6.1*
Feb 9

1618

09.92S

159.13E

100

6.9*
Feb 10

1242

08.74N

039.85W

100

6.2
Feb 14

1922

06.27S

I54.69E

448

6.0
Feb 13

2331

22.33S

112.57W

91

6.0*
Feb 16

0123

48.26N

154.32E

389

6.1*
Feb 17

0659

21.18S

169.83E

585

6.0*
Feb 18

0237

08.87N

126.48E

329

7.0
Feb 21

0235

58.42N

175.45W

202

6.7*
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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