Individual Event Report
 
| Event #523 - Summary, and parameter estimates with source IDs                                             | 
 
| Listed only in Woodward Clyde and in WPPSS documentation.  Woodward-Clyde cite the a Weston Geophysical listing in a 1976 WPPSS document. The WPPSS reference included here (1981) cites Townley and Allen, who list no earthquake at this date. Townley and Allen do have an earthquake in 1918 on 5/7 at 21:15;  but they list it as felt in Snohomish County. | 
 
| TIME | 
LOCATION | 
MAGNITUDE | 
MAX. INTENSITY | 
FELT AREA | 
 
| YR | 
MO | 
DAY | 
HR | 
MIN | 
AM/PM | 
Time Type | 
LAT(N) | 
LON(W) | 
DEP (km) | 
MAG | 
Mag Type | 
Felt Plc. | 
Felt St. | 
Inten- sity | 
Int. Type | 
Felt Area | 
Felt Area Int. | 
Felt Area Units | 
 
| 1918  | 
6  | 
7  | 
23  | 
15  | 
  | 
G  | 
47.59  | 
122.33  | 
  | 
  | 
  | 
W. Seattle  | 
WA  | 
  | 
  | 
  | 
  | 
  | 
 
| WWC - 1830 | 
WWC - 1830 | 
 -  | 
 -  | 
WPPSS - 2455 | 
 -  |  
 
 Underlying Source Material
| Source ID | 
Publication | 
Pub Date | 
Pub Details | 
 
| 1830  | 
Woodward Clyde Consultants,  unpublished  | 
1981  | 
Woodward-Clyde Consultants (1981), Historical Catalog (1841-1980) for the Pacific Northwest Region, unpublished catalog prepared for the Washington Public Power Supply System.  Copy provided to UW in 1993.  | 
 
| Transcription: 191806 72315    47597-122330W                    WG   01 | 
 
|   | 
 
| Source ID | 
Publication | 
Pub Date | 
Pub Details | 
 
| 2455  | 
Washington Public Power Supply System, "WPPSS Nuclear Project No. 2, Final Safety Analysis Report, Volume 1, Amendment 18" September 1981  | 
1981  | 
Table 2.5-6  | 
 
Transcription:      1915  Oct     19  Fruita, Ore.                                            TA          10      1918  Jun      7  West Seattle, Wash.                                     TA | 
 
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