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

May 1991
Total Number of Mw >6.0 Earthquakes per Month = 12
Cumulative Number of Mw >6.0 Earthquakes per Year = 54

Total Number of Mw >7.0 Earthquakes per Month = 2
Cumulative Number of Mw >7.0 Earthquakes per Year = 7

Date

Time

Lat

Lon

Depth

Mw
Loction**
May 1

0718

62.47N

151.41W

114

6.3
May 2

0701

09.39N

077.28W

361

6.0
May 3

0214

28.08N

139.58E

433

6.7
May 4

0342

09.54N

082.41W

100

6.2*
May 7

1309

39.43N

144.71E

100

6.1
May 10

1333

16.11S

174.14W

115

6.3
May 13

1628

03.46S

082.82E

218

6.0
May 17

0231

04.39S

142.71E

590

6.4*
May 19

0058

01.15N

122.95E

330

7.0
May 21

1100

07.51S

126.53E

184

6.6*
May 24

2050

16.50S

070.70W

127

6.9
May 30

1317

54.56N

161.60W

284

7.0
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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