Individual Event Report
| Event #548 - Summary, and parameter estimates with source IDs |
| All catalog listings refer back to the MWR report from Cascadia, which say that the earthquake was "felt by everyone." and that a "loud report" was heard. No newspapers have been checked. |
| 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 |
| 1920 |
12 |
15 |
10 |
50 |
A |
P |
44.40 |
122.40 |
|
|
|
Cascadia |
OR |
III |
RF |
|
|
|
| TA-OR - 541 |
WWC - 1846 |
- |
- |
TA-OR - 541 |
- |
Underlying Source Material
| Source ID |
Publication |
Pub Date |
Pub Details |
| 633 |
Reid, unpub., Scrapbook and Cardfile, on microfilm at USGS in Menlo Park |
|
|
| Transcription: Cascadia 44 degrees 15' N; 122 degrees 30' W PST 10:50 am 15 Dec, 1920 GMT 18h 50m III; MWR Loud report |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 541 |
Townley, S.D. and M.W. Allen, 1939, Descriptive Catalog of earthquakes of the Pacific Coast of the United States 1769 to 1928, Chapter II, Earthquakes in Oregon--1846-1928, BSSA, V. 29, No. 1, pp. 253-258. |
1939 |
|
| Transcription: 1920 December 15. 10:50 a.m. III. Cascadia, Linn Co. Observer gave intensity as III, but said shock was felt by everyone; sound like a loud report was heard.-MWR, 48,740. |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2273 |
Monthly Weather Review |
1920 |
V. 48, p. 740 |
Transcription: Date: December 15, 1920
Time (Greenwich Civil): 18:50
Location: Cascadia, Oregon
Latitude (deg., min.): 44 15
Longitude (deg.,min.): 122 30
RF Intensity: 3
Number of Shocks: 1
Duration (sec.):
Sounds: Loud report
Remarks: Felt by everyone
Observer: G.M. Geissendorfer |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1360 |
Berg and Baker, 1963, Oregon Earthquakes, 1841 through 1958, BSSA, V. 53, No. 1, pp. 95-108 |
1963 |
|
| Transcription: 1920 Dec 15 18:50:-- Dec 15 10:50 am (PST) Cascadia III* 10 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1846 |
Woodward Clyde Consultants, unpublished |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Woodward-Clyde Consultants (1981), Historical Catalog (1841-1980) for the Pacific Northwest Region, unpublished catalog prepared for the Washington Public Power Supply System.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: 192012151850000 44400-122400W1III BB 3 01 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 396 |
Byerly, Perry, 1952, Pacific Coast Earthquakes, Condon Lecture, pp. 33-38 |
1952 |
U.W. Library, N979 B991p, Special Collections) |
| Transcription: 1920, December 15 Cascadia, Linn County. Shock was felt by everyone. |
| |
| | |