Earthquake Information for Jefferson County, Colorado

Jefferson County, CO has a low earthquake risk, with a total of 1 earthquakes since 1931. The USGS database shows that there is a 1.98% chance of a major earthquake within 50km of Jefferson County, CO within the next 50 years. The largest earthquake within 30 miles of Jefferson County, CO was a 2.8 Magnitude in 1981.

Risk Level:
Low
Total Number of Earthquakes in Jefferson County since 1931
1
Probability of A 5.0 Earthquake within next 50 years
1.98%

Earthquake Probability for Jefferson County, CO

View the probability of a major earthquake within the next 50 years in Jefferson County, CO.

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
1.98%
5.1
1.59%
5.2
1.59%
5.2
1.59%
5.3
1.28%
5.4
1.03%
5.5
0.82%
5.6
0.76%
5.7
0.60%
5.8
0.52%
5.9
0.42%
6.0
0.38%
6.1
0.29%
6.2
0.25%
6.3
0.18%
6.4
0.16%
6.5
0.11%
6.6
0.08%
6.7
0.07%
6.8
0.03%
6.9
0.02%
7.0
0.01%
7.1
0.00%
7.2
0.00%
7.3
0.00%
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%
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