Individual Event Report
 
| Event #86 - Summary, and parameter estimates with source IDs                                             | 
 
| This event may be a mistaken account of the 1872 earthquake.  The 1870 date appears in several catalogs, but is problematic, as there are no contemporary accounts.  The account given by Plummer in 1893  is the most comprehensive and indicates extremely severe shaking both in Puget Sound and near the Columbia River, suggesting that it might possibly refer to the 1872 earthquake.  The  Plummer account mentions September -  but a search of the Portland Oregonian, The Washington Standard (Olympia), and The British Colonist (Victoria) found no record of such an event in September of 1870.  Other sources give no date or month, just the year of 1870. Plummer states that the earthquake was strongly felt on the side-wheel steamer Alida docked at Port Gamble. This could possibly be used to determine whether these reports belong to 1872, or to another event. | 
 
| 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 | 
 
| 1870  | 
9  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
Puget Sound  | 
WA  | 
VII  | 
RF  | 
  | 
  | 
  | 
 
| N-WPP - 2471 | 
 -  | 
 -  | 
 -  | 
HOLD2 - 1221 | 
 -  |  
 
 Underlying Source Material
| Source ID | 
Publication | 
Pub Date | 
Pub Details | 
 
| 2471  | 
Coombs, H.A., W.G. Milne, O.W. Nuttli, and D.B. Slemmons,  "Report of the Review Panel on the December 14, 1872 earthquake",  | 
1976  | 
Appendix D: Selected Supporting Information -- Professor Plummer's Paper on "Recent Volcanic Activity" Read before the Academy of Science - Tacoma Ledger - February 28, 1893  | 
 
Transcription: (This is part of an 8 page article - see the WPPSS table for entire text RSL 7/1995) 
     The most violent earthquake of recent times occurred  in  September  of the year 1870. All evidence goes to prove that the  shocks  came  from  the direction of Mount Olympus in the Olympic range.  On  the  Cowlitz  prairies stock was stampeded, chimneys were destroyed, fences were  leveled  and  in the houses the chairs rocked and clocks were thrown  from  the  mantels.  At Yelm there were observed two very strong shocks, followed by several sILg!it ones.  Clocks were stopped and many thrown down.  Chickens were thrown off the roosts and chimneys and buildings were cracked.  In many places earth fissures were formed, and on the Columbia river trail  it  was  necessary to make repairs in many places to prevent  accidents  to  horses.  Numerous cracks  were found, some as far east as Okanogan and Yakima.  In many parts a dull rumbling noise was heard. At Olympia  houses  rocked  violently,  throwing down chairs, and destroying crockery, and a child was thrown from  its  bed. The maple trees swayed to and fro like inverted  pendulums,  and  people  who stood in the streets to avoid falling chimneys, were thrown  to  the  ground. In Lewis County many chimneys were broken off close to the roofs.    The  side- wheel steamer Alida was lying at her dock at Port Gamble  with her   stern pointing north and the dock to the westward.  Her officers and her   men were- startled by a strong blow against the guards on the port side, and   rushed out upon the dock thinking the steamer had been run  into.  A  strong swell immediately began to roll the boat, and from the excited people who had rushed into the streets, they learned that an earthquake had occurred. Gamblers deserted their tables, leaving their gold in the  scramble  to  get out from under buildings.  It may be presumed that Port Gamble was well and truly named.  With this earthquake is connected the fall of a large portion of Mount Tacoma, for upon the first clear day following the shocks it could be clearly seen that the Liberty Cap Cor north peak) had lost about eighty acres from its southern end, which h.ad  been  detached from the main part of the peak and was distributed down  the  western  slope. The Liberty Cap  now shows a nearly perpendicular face on the southern side which is plainly visible from points south of Yelm.  Were the evidence as to the direction of the earthquake less clear, it might be argued that the falling of this immense mass produced the  shocks,  but  the reverse is probably true.  The Puyallup Indians have a tradition that at one time Tacobet (Mount Tacoma) broke near  the  summit.  A  point fell off and drifted over to the Olympics, and after this phenomena there was snow on the Olympics--but never before. | 
 
|   | 
 
| Source ID | 
Publication | 
Pub Date | 
Pub Details | 
 
| 670  | 
Reid, unpub., Scrapbook and Cardfile, on microfilm at USGS in Menlo Park  | 
  | 
  | 
 
| Transcription: Puget Sound 1870 or 1872 VII -Holden's Cat. pg  84  Informa- tion indefinite as to year.  "Seven shocks" | 
 
|   | 
 
| Source ID | 
Publication | 
Pub Date | 
Pub Details | 
 
| 1034  | 
Townley, S. D. and M. W.  Allen, 1939, Descriptive Catalog of Earthquakes of the Pacific Coast of the United States 1769-1928, Chap. III Earthquakes in Washington, 1883-1928, BSSA, V. 29, No. 1, pp. 259-268  | 
1939  | 
  | 
 
| Transcription: 1870 ? (VII). Puget Sound. "Several old settlers insist that there were severe shocks, but none can state the day or time. They may refer to 1872?"-P. | 
 
|   | 
 
| Source ID | 
Publication | 
Pub Date | 
Pub Details | 
 
| 1221  | 
Holden, E.S.,  1898, A Catalog of Earthquakes on the Pacific Coast 1769-1897, Smithsonian Miscellaneous Collections, 1087  | 
1898  | 
  | 
 
| Transcription: 1870? Puget Sound (VII). Several old settlers insist that there were severe shocks, but none can state the day or time. They may refer to 1872?__P.  | 
 
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