Individual Event Report
| Event #564 - Summary, and parameter estimates with source IDs |
| All catalog reports stem from the report of the Portland weather observer, who gives a RF Intensity of IV and a duration of 10 seconds, and from a short report in BSSA that gives a duration of 20 seconds. The Oregonian report suggests that the quake was only felt by residents of the Mount Tabor district of Portland. |
| 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 |
| 1921 |
9 |
22 |
11 |
20 |
A |
|
45.55 |
122.60 |
|
|
|
Portland |
OR |
IV |
RF |
|
|
|
| N-Ore - 2337 |
WWC - 1852 |
- |
- |
TA-OR - 544 |
- |
Underlying Source Material
| Source ID |
Publication |
Pub Date |
Pub Details |
| 160 |
Rasmussen, Norman, 1967, Washington state earthquakes 1840 through 1965, BSSA V. 57, No. 3, pp. 463-476 |
1967 |
|
| Transcription: 160 1921 Sept. 22 19:20 Portland, Ore. IV 3 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 544 |
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:
1921 September 22. 11:20 a.m. IV. Portland. One report gives duration of ten seconds, and another twenty seconds.-BSSA, 11, 198; MWR, 49, 532. |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1363 |
Berg and Baker, 1963, Oregon Earthquakes, 1841 through 1958, BSSA, V. 53, No. 1, pp. 95-108 |
1963 |
|
| Transcription: 1921 Sept 22 19:20:-- Sept 22 11:20 am (PST) Portland IV* 10;O/Sept 22, 1921, 1:2 Intensity could be III (O/Sept 22, 1921, 1:2) |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2278 |
Monthly Weather Review |
1921 |
V. 49, p. 532 |
Transcription: Date: September 22, 1921
Time (Greenwich Civil): 19:20
Location: Portland, Oregon
Latitude (deg., min.): 45 30
Longitude (deg.,min.): 122 40
RF Intensity: 4
Number of Shocks: 1
Duration (sec.): circa 10
Sounds: None
Remarks: Felt by several
Observer:R.H. Desmond |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 399 |
Byerly, Perry, 1952, Pacific Coast Earthquakes, Condon Lecture, pp. 33-38 |
1952 |
U.W. Library, N979 B991p, Special Collections) |
| Transcription: 1921, September 22 Portland. Duration 10 to 20 seconds. |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2185 |
Bulletin of the Seismological Society of America |
1921 |
V. 11, p.198 |
| Transcription: Portland, Oregon, September 22, 1921. - A slight earthquake was felt by many persons at Portland, Oregon, at 11:20 a.m. on September 22, 1921. It is said to have continued for twenty seconds, but was not of sufficient intensity to do any damage. |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 636 |
Reid, unpub., Scrapbook and Cardfile, on microfilm at USGS in Menlo Park |
|
|
| Transcription: Portland PST 11:20 pm 22 Sept, 1921 GMT 19h 20m IV duration 10 sec MWR; Bull SSA, XI, 198 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2337 |
Morning Oregonian |
1921 |
Sept. 23, 1921 |
Transcription: EARTHQUAKE HITS CITY
East Side shaken by Temblor at 11:20 A.M. Yesterday
A slight earthquake shock, of about 20 seconds duration, visited Portland's east side at 11:20 A.M. yesterday. Numerous residents of the Mount Tabor district, several of them survivors of severe quakes in other cities, reported feeling the disturbance, and Edward L. Wells, head of the local office of the weather bureau, officially confirms the report that there was a "light tremble", though the Portland weather bureau office has no instruments capable of recording a shock of this nature.
The nearest seismograph, according to Mr. Wells, is in the university at Spokane. |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1852 |
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: 192109221920000 45550-122600W IV BB 4 01 |
| |
| | |