Earthquake Information for Portland, Oregon

Portland, OR has a low earthquake risk, with a total of 919 earthquakes since 1931. The USGS database shows that there is a 30.92% chance of a major earthquake within 50km of Portland, OR within the next 50 years. The largest earthquake within 30 miles of Portland, OR was a 3.9 Magnitude in 2015.

Risk Level:
Low
Total Number of Earthquakes in Portland since 1931 within 50 miles
919
Probability of A 5.0 Earthquake within next 50 years
30.92%

Earthquake Probability for Portland, OR

View the probability of a major earthquake within the next 50 years in Portland, 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
30.92%
5.1
27.63%
5.2
27.63%
5.2
24.77%
5.3
22.31%
5.4
20.20%
5.5
18.40%
5.6
16.87%
5.7
15.58%
5.8
14.49%
5.9
13.57%
6.0
12.80%
6.1
12.01%
6.2
11.18%
6.3
9.05%
6.4
8.50%
6.5
8.05%
6.6
6.48%
6.7
5.04%
6.8
3.80%
6.9
2.66%
7.0
1.61%
7.1
0.79%
7.2
0.03%
7.3
0.01%
7.4
0.00%
7.5
0.00%
7.6
0.00%
7.7
0.00%
7.8
0.00%
7.9
0.00%
8.0
0.00%
8.1
0.00%
8.2
0.00%
8.3
0.00%
8.4
0.00%
8.5
0.00%
8.6
0.00%
8.7
0.00%
8.8
0.00%
8.9
0.00%
9.0
0.00%
9.1
0.00%
9.2
0.00%