Earthquake Information for Half Moon Bay, California

Half Moon Bay, CA has a very high earthquake risk, with a total of 2,728 earthquakes since 1931. The USGS database shows that there is a 95.93% chance of a major earthquake within 50km of Half Moon Bay, CA within the next 50 years. The largest earthquake within 30 miles of Half Moon Bay, CA was a 4.8 Magnitude in 1989.

Risk Level:
Very High

Total Number of Earthquakes in Half Moon Bay since 1931 within 30 miles

2,728

Probability of A 5.0 Earthquake within next 50 years

95.93%

Most Recent
Largest

4/22/2024 - 1.6 mag, 7.7mi depth 7.90782 mi from San Francisco, CA
4/19/2024 - 2.1 mag, 10.0mi depth 8.83305 mi from San Francisco, CA
4/17/2024 - 1.3 mag, 3.3mi depth 4.39597 mi from Portola Valley, CA
4/15/2024 - 0.8 mag, 9.2mi depth 3.38581 mi from Berkeley, CA
4/12/2024 - 1.2 mag, 9.8mi depth 4.71481 mi from Alameda, CA
4/12/2024 - 1.8 mag, 8.6mi depth 4.05962 mi from Muir Beach, CA
4/11/2024 - 2.2 mag, 9.0mi depth 3.07133 mi from Berkeley, CA
4/11/2024 - 1.3 mag, 9.5mi depth 3.92906 mi from San Leandro, CA
4/10/2024 - 2.3 mag, 8.5mi depth 4.24861 mi from Muir Beach, CA
4/8/2024 - 1.1 mag, 10.3mi depth 2.31097 mi from Portola Valley, CA
4/6/2024 - 1.4 mag, 5.0mi depth 7.81608 mi from San Francisco, CA
4/6/2024 - 3.4 mag, 9.4mi depth 3.30386 mi from Berkeley, CA
4/6/2024 - 0.7 mag, 8.2mi depth 3.19282 mi from Berkeley, CA
4/6/2024 - 1.9 mag, 8.8mi depth 3.10502 mi from Berkeley, CA
4/4/2024 - 1.8 mag, 3.3mi depth 0.914178 mi from Union City, CA
3/25/2024 - 1.4 mag, 5.8mi depth 1.33294 mi from Fairview, CA
3/22/2024 - 1.8 mag, 8.0mi depth 7.86845 mi from San Francisco, CA
3/21/2024 - 2.1 mag, 2.9mi depth 4.88649 mi from Muir Beach, CA
3/20/2024 - 1.3 mag, 7.7mi depth 3.03335 mi from Fremont, CA
3/18/2024 - 1.6 mag, 2.7mi depth 2.81534 mi from Pacifica, CA
3/18/2024 - 1.6 mag, 7.8mi depth 2.7965 mi from Oakland, CA
3/15/2024 - 1.8 mag, 8.5mi depth 3.18213 mi from Oakland, CA
3/15/2024 - 2.4 mag, 10.7mi depth 3.00559 mi from Berkeley, CA
3/12/2024 - 1.7 mag, 10.8mi depth 9.16166 mi from San Francisco, CA
3/5/2024 - 2.0 mag, 9.3mi depth 7.53332 mi from San Francisco, CA
3/4/2024 - 1.7 mag, 7.8mi depth 8.6167 mi from San Francisco, CA
3/4/2024 - 1.9 mag, 9.1mi depth 8.22649 mi from San Francisco, CA
2/29/2024 - 0.4 mag, 4.6mi depth 1.76098 mi from Oakland, CA
2/28/2024 - 1.1 mag, 11.2mi depth 2.37899 mi from Oakland, CA
2/23/2024 - 1.1 mag, 5.6mi depth 1.74517 mi from Los Altos Hills, CA
2/22/2024 - 3.2 mag, 9.2mi depth 3.46245 mi from Fremont, CA
2/21/2024 - 1.8 mag, 9.0mi depth 8.09799 mi from San Francisco, CA
2/20/2024 - 1.2 mag, 8.8mi depth 1.10571 mi from San Leandro, CA
2/20/2024 - 1.6 mag, 3.2mi depth 2.18907 mi from Hayward, CA
2/18/2024 - 1.9 mag, 9.6mi depth 3.35151 mi from Newark, CA
2/16/2024 - 0.6 mag, 2.7mi depth 3.07116 mi from Portola Valley, CA
2/15/2024 - 1.7 mag, 4.1mi depth 3.47215 mi from Hayward, CA
2/12/2024 - 1.4 mag, 7.7mi depth 2.72605 mi from Union City, CA
2/11/2024 - 1.1 mag, 8.9mi depth 2.89815 mi from Portola Valley, CA
2/11/2024 - 1.8 mag, 8.8mi depth 7.75855 mi from San Francisco, CA
2/10/2024 - 1.8 mag, 8.5mi depth 7.59432 mi from San Francisco, CA
2/5/2024 - 1.6 mag, 8.6mi depth 2.5107 mi from Oakland, CA
2/3/2024 - 1.2 mag, 9.1mi depth 2.93162 mi from Union City, CA
2/2/2024 - 3.4 mag, 9.9mi depth 8.5951 mi from San Francisco, CA
2/2/2024 - 1.7 mag, 10.0mi depth 8.70839 mi from San Francisco, CA
2/1/2024 - 2.3 mag, 3.1mi depth 1.96081 mi from Woodside, CA
2/1/2024 - 1.6 mag, 15.9mi depth 3.51611 mi from Alameda, CA
2/1/2024 - 2.3 mag, 16.6mi depth 3.91791 mi from Alameda, CA
2/1/2024 - 2.2 mag, 6.0mi depth 1.88376 mi from Woodside, CA
2/1/2024 - 1.4 mag, 10.3mi depth 2.84277 mi from Portola Valley, CA

10/18/1989 - 4.8 mag, 19.0mi depth 4.5815 mi from Boulder Creek, CA
10/18/1989 - 4.6 mag, 14.0mi depth 2.8451 mi from Lexington Hills, CA
1/4/2018 - 4.5 mag, 13.0mi depth 3.13005 mi from Berkeley, CA
11/7/1989 - 4.4 mag, 11.0mi depth 2.8423 mi from Monte Sereno, CA
4/28/1979 - 4.4 mag, 12.0mi depth 2.1811 mi from Pacifica, CA
3/27/1984 - 4.3 mag, 7.0mi depth 2.3184 mi from San Leandro, CA
5/11/1987 - 4.3 mag, 4.0mi depth 1.8793 mi from Canyon, CA
7/20/2007 - 4.2 mag, 5.3mi depth 2.2993 mi from Canyon, CA
3/3/1981 - 4.2 mag, 8.0mi depth 3.7116 mi from Fremont, CA
8/17/2015 - 4.1 mag, 5.4mi depth 1.21708 mi from Piedmont, CA
9/5/2003 - 4.0 mag, 11.5mi depth 1.3839 mi from Piedmont, CA
6/4/1983 - 4.0 mag, 6.0mi depth 1.5122 mi from Ashland, CA
12/2/1989 - 4.0 mag, 11.0mi depth 3.8459 mi from Monte Sereno, CA
10/20/1989 - 4.0 mag, 16.0mi depth 4.2632 mi from Boulder Creek, CA
7/21/2015 - 4.0 mag, 8.1mi depth 6.27205 mi from Fremont, CA
6/28/2021 - 3.9 mag, 10.6mi depth 2.70219 mi from San Lorenzo, CA
10/20/2011 - 3.9 mag, 8.2mi depth 2.6196 mi from Berkeley, CA
10/27/2023 - 3.9 mag, 13.1mi depth 1.64644 mi from Millbrae, CA
10/21/2011 - 3.8 mag, 8.0mi depth 2.3283 mi from Berkeley, CA
12/12/1981 - 3.8 mag, 9.0mi depth 2.8433 mi from Woodside, CA
10/18/1989 - 3.8 mag, 5.0mi depth 2.6794 mi from Monte Sereno, CA
11/14/1988 - 3.7 mag, 11.0mi depth 2.8724 mi from Portola Valley, CA
6/28/1991 - 3.7 mag, 9.0mi depth 10.3693 mi from Davenport, CA
8/22/1990 - 3.7 mag, 11.0mi depth 5.3552 mi from Saratoga, CA
12/20/1992 - 3.7 mag, 3.0mi depth 2.9694 mi from San Leandro, CA
12/26/1989 - 3.7 mag, 12.0mi depth 4.8152 mi from Lexington Hills, CA
1/16/2019 - 3.7 mag, 11.7mi depth 2.07791 mi from Piedmont, CA
12/31/2020 - 3.6 mag, 14.4mi depth 4.32642 mi from Muir Beach, CA
2/13/1989 - 3.6 mag, 8.0mi depth 2.0451 mi from Muir Beach, CA
8/24/2011 - 3.6 mag, 8.1mi depth 2.8066 mi from San Leandro, CA
10/27/2011 - 3.6 mag, 9.7mi depth 2.6577 mi from Berkeley, CA
9/26/1990 - 3.6 mag, 8.0mi depth 1.6531 mi from Ladera, CA
6/4/2016 - 3.6 mag, 11.6mi depth 6.22177 mi from Boulder Creek, CA
3/11/1997 - 3.6 mag, 5.3mi depth 4.9016 mi from Broadmoor, CA
3/11/1997 - 3.6 mag, 4.8mi depth 4.9434 mi from Broadmoor, CA
10/18/1989 - 3.6 mag, 15.0mi depth 2.8206 mi from Monte Sereno, CA
12/21/2006 - 3.6 mag, 8.8mi depth 2.515 mi from Piedmont, CA
12/27/1989 - 3.6 mag, 12.0mi depth 5.167 mi from Lexington Hills, CA
10/5/2019 - 3.6 mag, 7.6mi depth 3.88952 mi from Colma, CA
12/24/2002 - 3.6 mag, 9.4mi depth 0.2037 mi from Pacifica, CA
12/23/2006 - 3.6 mag, 10.0mi depth 2.6828 mi from Piedmont, CA
11/4/1989 - 3.6 mag, 9.0mi depth 3.7813 mi from Canyon, CA
5/14/2018 - 3.6 mag, 9.0mi depth 3.13147 mi from Oakland, CA
11/1/2004 - 3.6 mag, 9.1mi depth 5.7278 mi from Davenport, CA
8/25/1990 - 3.5 mag, 4.0mi depth 2.3059 mi from Piedmont, CA
7/14/1997 - 3.5 mag, 15.1mi depth 5.4058 mi from Pescadero, CA
1/30/1987 - 3.5 mag, 9.0mi depth 2.0981 mi from San Leandro, CA
12/31/1980 - 3.5 mag, 11.0mi depth 0.7575 mi from Ashland, CA
9/13/2016 - 3.5 mag, 4.8mi depth 2.10808 mi from Piedmont, CA
4/7/1980 - 3.5 mag, 6.0mi depth 1.5124 mi from Piedmont, CA

View All

Earthquake Probability for Half Moon Bay, CA

View the probability of a major earthquake within the next 50 years in Half Moon Bay, CA.

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2

(within 31 km/51 miles above magnitude)

5.0

95.93%

5.1

93.99%

5.2

93.99%

5.2

91.67%

5.3

89.09%

5.4

86.33%

5.5

83.52%

5.6

80.74%

5.7

78.07%

5.8

75.58%

5.9

73.29%

6.0

71.22%

6.1

69.13%

6.2

66.93%

6.3

64.63%

6.4

60.95%

6.5

57.09%

6.6

52.98%

6.7

48.68%

6.8

44.10%

6.9

39.90%

7.0

36.38%

7.1

33.55%

7.2

31.40%

7.3

28.83%

7.4

25.52%

7.5

20.97%

7.6

17.47%

7.7

14.11%

7.8

10.68%

7.9

7.03%

8.0

3.86%

8.1

2.43%

8.2

0.66%

8.3

0.32%

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%

Earthquake Count for Half Moon Bay, CA

View the number of earthquake incidents in Half Moon Bay, CA by year that are more than 2.5 Magnitude.

List of Earthquake Incidents for Half Moon Bay, CA

Total Number of Earthquakes in Half Moon Bay, CA within 30 miles. All distances and depths in the table are measured in miles.

04/22/2024

1.6

7.7

7.91

Earthquake Information for Half Moon Bay, California

Earthquake Probability for Half Moon Bay, CA

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2

Earthquake Count for Half Moon Bay, CA

List of Earthquake Incidents for Half Moon Bay, CA

Risk Of Natural Disasters In Half Moon Bay, CA

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