N.E. OF DENVER
Earthquake ID:  283 Date: 08/09/1967
Intensity:  VII
Time: 1:25 PM
Magnitude:  5.3
Earthquake Depth: 5  (kM)
Magnitude USGS:  5.3
Latitude: 39.9
Magnitude Other:  4.9 NUT-2 Longitude: -104.711
 
Earthquake Information:
One of the strongest shocks to affect the Denver area in the 1960’s occurred on August 9, 1967. An isoseismal map for this event is shown in Figure 37. Felt reports and intensity ratings were described by von Hake and Cloud (1969). Intensity VII damage was reported in Northglenn, where plate glass windows broke, many walls, ceilings, foundations, and concrete floors cracked, and several businesses sustained damage due to fallen merchandise. A liquor store estimated damage at $10,000 to $20,000. Intensity VI damage was reported in 28 locations, many of which suffered considerable cracked plaster and mortar, broken windows, damaged foundations and chimneys, and damage to household goods. The earthquake was felt as far as Sterling, Pueblo, and Laramie. Based on Figure 37, we estimate the felt area to be about 50,000 km 2. Von Hake and Cloud (1969) proposed a size of 39,000 km 2, while Hadsell indicated it was felt over 117,000 km 2. Docekal (1970) reported a felt area of 52,000 km 2. A magnitude of mb 5.3 was reported for this earthquake by von Hake and Cloud (1969). Nuttli and others (1979) calculated an mb of 4.9 and Ms of 4.4. Herrmann and others (1981) suggested a focal depth of 3 km for this event. The overall felt area is prominently elongated in directions parallel and perpendicular to the mountain front. The intensity V and VI contours also are oriented in an elongate pattern perpendicular to the mountain front.
 
Location Map: (click on image for full size view)
Location Map for Earthquake ID 283
 
References:
48 - Herrmann, R.B., Park, S.K., and Wang, C.Y., 1981, The Denver earthquakes of 1967-1968: Seismological Society of America Bulletin, v. 71, no. 3, p. 731-745.
81 - Nuttli, O.W., Bollinger, G.A., and Griffiths, D.W., 1979, On the relation between Modified Mercalli intensity and body-wave magnitude: Seismological Society of America Bulletin, v. 69, no. 3, p. 893-909.
105 - Stover, C.W., and Coffman, J.L., 1993, Seismicity of the United States, 1568-1989 (revised): U.S. Geological Survey Professional Paper 1527, 418 p.
122 - U.S. Geological Survey, Preliminary determination of epicenters and associated earthquake data report, January 1961-present, (formerly by U.S. Coast and Geodetic Survey, U.S. Environmental Science Services Administration, and U.S. Oceanic and Atmospheric Administration).
131 - von Hake, C.A., and Cloud, W.K., 1969, United States earthquakes 1967: U.S. Coast and Geodetic Survey, 90 p.