Earthquake Information for Polk County, Oregon

Polk County, OR has a moderate earthquake risk, with a total of 0 earthquakes since 1931. The USGS database shows that there is a 22.95% chance of a major earthquake within 50km of Polk County, OR within the next 50 years.

Risk Level:
Moderate
Total Number of Earthquakes in Polk County since 1931
0
Probability of A 5.0 Earthquake within next 50 years
22.95%

Earthquake Probability for Polk County, OR

View the probability of a major earthquake within the next 50 years in Polk County, OR.

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2
(within 31 km/51 miles above magnitude)
MAGNITUDE
PROBABILITY
5.0
22.95%
5.1
21.18%
5.2
21.18%
5.2
19.67%
5.3
18.40%
5.4
17.33%
5.5
16.42%
5.6
15.66%
5.7
15.03%
5.8
14.49%
5.9
14.05%
6.0
13.68%
6.1
13.32%
6.2
13.03%
6.3
12.77%
6.4
12.56%
6.5
12.36%
6.6
11.29%
6.7
10.26%
6.8
9.28%
6.9
8.37%
7.0
7.54%
7.1
6.82%
7.2
6.13%
7.3
6.13%
7.4
6.13%
7.5
6.13%
7.6
6.13%
7.7
6.13%
7.8
6.13%
7.9
6.13%
8.0
6.13%
8.1
5.92%
8.2
5.72%
8.3
5.52%
8.4
5.11%
8.5
4.69%
8.6
4.24%
8.7
3.75%
8.8
3.27%
8.9
2.63%
9.0
2.63%
9.1
0.66%
9.2
0.66%

Earthquake Count for Polk County, OR

View the number of earthquake incidents in Polk County, OR by year that are more than 2.5 Magnitude.

List of Earthquake Incidents for Polk County, OR

Total Number of Earthquakes in Polk County, OR within 30 miles. All distances and depths in the table are measured in miles.

Date
Mag
Depth
 
08/02/2017
1.3
-0.3
Details
11/06/2015
1.1
0.0
Details
07/09/2014
1.6
0.0
Details
02/11/2014
1.7
0.0
Details
11/19/2013
1.5
0.0
Details
10/28/2013
1.3
0.0
Details
05/20/2013
1.5
27.3
Details

Risk Of Natural Disasters In Polk County, OR

Related Pages

Oregon Earthquakes by City

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