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

March 1991
Total Number of Mw >6.0 Earthquakes per Month = 8
Cumulative Number of Mw >6.0 Earthquakes per Year = 27

Total Number of Mw >7.0 Earthquakes per Month = 0
Cumulative Number of Mw >7.0 Earthquakes per Year = 2

Date

Time

Lat

Lon

Depth

Mw
Loction**
Mar 1

1730

10.93N

084.63W

196

6.2
Mar 3

1520

21.86S

175.05W

161

6.2*
Mar 8

1136

60.90N

167.02E

130

6.6
Mar 9

0101

54.87S

131.53W

100

6.0
Mar 11

2115

51.15S

029.25E

100

6.4*
Mar 16

0602

10.17N

085.18W

333

6.3*
Mar 20

1308

05.79S

080.89W

351

6.0*
Mar 21

0553

09.71S

079.77W

247

6.2*
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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