M1.6 earthquake 18 km S of Tracy, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Feb 17, 1990, 5:25 PM PST

UTC

1990-02-18 01:25:45 UTC

Depth

1.0 km (0.6 mi), shallow

Epicenter

37.577° N, 121.442° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 2.3 km in depth

Magnitude uncertainty

±0.09

Depth from

From location

Station coverage gap

176°

Stations used

13

• Tracy, CaliforniaPopulation 87,075. Forecast18 kmS
• Modesto, CaliforniaPopulation 211,266. Forecast40 kmW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast486 kmNW

After

1. 2.04 km ESE of Interlaken, CaliforniaSat, Feb 17, 6:50 PM PST · 13376 days ago · 10 km deep · 74 km away
2. 1.812 km N of Morgan Hill, CaliforniaSun, Feb 18, 2:47 AM PST · 13376 days ago · 5 km deep · 41 km away
3. 1.88 km ENE of San Martin, CaliforniaSun, Feb 18, 2:30 PM PST · 13376 days ago · 5 km deep · 52 km away
4. 1.66 km NW of Broadmoor, CaliforniaSun, Feb 18, 4:50 PM PST · 13375 days ago · 12 km deep · 98 km away
5. 2.12 km S of San Juan Bautista, CaliforniaSun, Feb 18, 8:48 PM PST · 13375 days ago · 6 km deep · 84 km away
6. 2.04 km WNW of San Juan Bautista, CaliforniaMon, Feb 19, 1:46 AM PST · 13375 days ago · 6 km deep · 81 km away
7. 1.93 km NNW of Corralitos, CaliforniaMon, Feb 19, 7:47 AM PST · 13375 days ago · 15 km deep · 70 km away
8. 2.34 km NNW of Aromas, CaliforniaMon, Feb 19, 4:54 PM PST · 13374 days ago · 11 km deep · 76 km away
9. 1.61 km ENE of Interlaken, CaliforniaTue, Feb 20, 2:52 AM PST · 13374 days ago · 12 km deep · 73 km away
10. 1.69 km SSE of Davenport, CaliforniaTue, Feb 20, 7:53 AM PST · 13374 days ago · 11 km deep · 96 km away
11. 1.90 km SW of Tres Pinos, CaliforniaTue, Feb 20, 8:46 PM PST · 13373 days ago · 6 km deep · 89 km away
12. 1.88 km ENE of Morgan Hill, CaliforniaWed, Feb 21, 8:46 PM PST · 13372 days ago · 2 km deep · 48 km away
13. 1.62 km NE of Corralitos, CaliforniaWed, Feb 21, 10:23 PM PST · 13372 days ago · 14 km deep · 71 km away
14. 2.78 km ENE of San Martin, CaliforniaThu, Feb 22, 5:52 AM PST · 13372 days ago · 7 km deep · 52 km away
15. 2.112 km NW of Snelling, CaliforniaThu, Feb 22, 8:55 AM PST · 13372 days ago · 4 km deep · 80 km away
16. 1.93 km ESE of Berkeley, CaliforniaThu, Feb 22, 9:39 AM PST · 13372 days ago · 10 km deep · 77 km away
17. 2.06 km S of Tres Pinos, CaliforniaThu, Feb 22, 10:02 PM PST · 13371 days ago · 9 km deep · 95 km away
18. 1.65 km NNE of Tres Pinos, CaliforniaFri, Feb 23, 3:11 PM PST · 13371 days ago · 4 km deep · 83 km away
19. 2.314 km E of Seven Trees, CaliforniaSat, Feb 24, 3:24 PM PST · 13370 days ago · 8 km deep · 36 km away
20. 3.06 km N of Day Valley, CaliforniaSun, Feb 25, 12:04 AM PST · 13369 days ago · 4 km deep · 65 km away
21. 2.45 km S of Lexington Hills, CaliforniaSun, Feb 25, 6:11 AM PST · 13369 days ago · 14 km deep · 69 km away
22. 1.64 km E of Interlaken, CaliforniaMon, Feb 26, 7:20 AM PST · 13368 days ago · 10 km deep · 74 km away
23. 3.014 km N of Morgan Hill, CaliforniaMon, Feb 26, 11:45 AM PST · 13368 days ago · 7 km deep · 39 km away
24. 1.93 km E of Day Valley, CaliforniaMon, Feb 26, 1:20 PM PST · 13368 days ago · 13 km deep · 69 km away
25. 1.66 km N of Day Valley, CaliforniaMon, Feb 26, 4:31 PM PST · 13367 days ago · 3 km deep · 65 km away
26. 1.810 km NE of Milpitas, CaliforniaTue, Feb 27, 9:23 AM PST · 13367 days ago · 7 km deep · 35 km away
27. 2.01 km ENE of Pittsburg, CaliforniaTue, Feb 27, 10:15 PM PST · 13366 days ago · 19 km deep · 63 km away
28. 1.61 km ENE of Aromas, CaliforniaWed, Feb 28, 7:19 AM PST · 13366 days ago · 9 km deep · 78 km away
29. 2.04 km ENE of Tres Pinos, CaliforniaWed, Feb 28, 3:41 PM PST · 13366 days ago · 9 km deep · 87 km away
30. 2.15 km SW of Monte Sereno, CaliforniaThu, Mar 1, 3:37 AM PST · 13365 days ago · 13 km deep · 68 km away
31. 1.76 km SSW of Los Banos, CaliforniaThu, Mar 1, 9:48 PM PST · 13364 days ago · 1 km deep · 80 km away
32. 1.815 km ESE of East Foothills, CaliforniaFri, Mar 2, 11:39 PM PST · 13363 days ago · 2 km deep · 36 km away
33. 1.86 km NNE of Corralitos, CaliforniaSat, Mar 3, 2:56 AM PST · 13363 days ago · 7 km deep · 67 km away
34. 1.57 km SW of Monte Sereno, CaliforniaSat, Mar 3, 3:12 PM PST · 13363 days ago · 13 km deep · 69 km away
35. 2.32 km SSW of Saratoga, CaliforniaSun, Mar 4, 4:21 PM PST · 13361 days ago · 8 km deep · 64 km away
36. 1.70 km ENE of Millbrae, CaliforniaMon, Mar 5, 9:51 AM PST · 13361 days ago · 12 km deep · 83 km away
37. 1.71 km ENE of Millbrae, CaliforniaMon, Mar 5, 10:55 AM PST · 13361 days ago · 11 km deep · 82 km away
38. 1.54 km SE of Tres Pinos, CaliforniaMon, Mar 5, 12:52 PM PST · 13361 days ago · 6 km deep · 92 km away
39. 2.15 km SSW of Gilroy, CaliforniaMon, Mar 5, 6:19 PM PST · 13360 days ago · 3 km deep · 70 km away
40. 1.89 km NNE of Day Valley, CaliforniaTue, Mar 6, 1:53 AM PST · 13360 days ago · 4 km deep · 62 km away
41. 1.86 km NE of Amesti, CaliforniaTue, Mar 6, 9:35 AM PST · 13360 days ago · 13 km deep · 68 km away
42. 1.93 km W of Lexington Hills, CaliforniaTue, Mar 6, 2:55 PM PST · 13360 days ago · 11 km deep · 68 km away
43. 2.015 km N of Morgan Hill, CaliforniaWed, Mar 7, 4:46 PM PST · 13358 days ago · 2 km deep · 39 km away
44. 2.36 km W of Davenport, CaliforniaThu, Mar 8, 2:04 AM PST · 13358 days ago · 3 km deep · 96 km away
45. 1.6Northern CaliforniaThu, Mar 8, 12:50 PM PST · 13358 days ago · 13 km deep · 43 km away
46. 2.17 km SW of Monte Sereno, CaliforniaFri, Mar 9, 6:34 PM PST · 13356 days ago · 14 km deep · 69 km away
47. 1.63 km S of Lexington Hills, CaliforniaSat, Mar 10, 12:58 AM PST · 13356 days ago · 13 km deep · 68 km away
48. 1.74 km NW of Day Valley, CaliforniaSat, Mar 10, 12:23 PM PST · 13356 days ago · 14 km deep · 69 km away
49. 2.010 km WSW of Morgan Hill, CaliforniaSat, Mar 10, 2:40 PM PST · 13356 days ago · 2 km deep · 60 km away
50. 2.15 km ESE of Interlaken, CaliforniaSat, Mar 10, 11:51 PM PST · 13355 days ago · 5 km deep · 74 km away
51. 1.94 km ENE of Corralitos, CaliforniaSun, Mar 11, 2:16 AM PST · 13355 days ago · 12 km deep · 69 km away
52. 1.63 km SSW of Lexington Hills, CaliforniaSun, Mar 11, 2:38 AM PST · 13355 days ago · 13 km deep · 69 km away
53. 2.415 km E of Seven Trees, CaliforniaSun, Mar 11, 3:52 AM PST · 13355 days ago · 6 km deep · 38 km away
54. 1.56 km WSW of Gilroy, CaliforniaSun, Mar 11, 10:44 AM PST · 13355 days ago · 4 km deep · 68 km away
55. 1.610 km S of Tres Pinos, CaliforniaSun, Mar 11, 4:06 PM PST · 13355 days ago · 4 km deep · 98 km away
56. 1.52 km NW of Lexington Hills, CaliforniaMon, Mar 12, 5:26 AM PST · 13354 days ago · 8 km deep · 66 km away
57. 1.76 km ENE of Day Valley, CaliforniaMon, Mar 12, 8:17 AM PST · 13354 days ago · 5 km deep · 66 km away
58. 1.65 km S of La Selva Beach, CaliforniaMon, Mar 12, 11:26 AM PST · 13354 days ago · 4 km deep · 85 km away
59. 2.46 km S of Gilroy, CaliforniaMon, Mar 12, 2:05 PM PST · 13354 days ago · 6 km deep · 70 km away
60. 3.33 km SW of Hollister, CaliforniaMon, Mar 12, 7:18 PM PST · 13353 days ago · 8 km deep · 83 km away

The first 60 of 174.

Before

1. 2.85 km SSW of Gilroy, CaliforniaSat, Feb 17, 2:28 PM PST · 13377 days ago · 3 km deep · 70 km away
2. 2.73 km S of San Juan Bautista, CaliforniaSat, Feb 17, 2:24 PM PST · 13377 days ago · 6 km deep · 85 km away
3. 3.02 km SSW of San Juan Bautista, CaliforniaSat, Feb 17, 12:31 PM PST · 13377 days ago · 6 km deep · 84 km away
4. 2.82 km SSW of San Juan Bautista, CaliforniaSat, Feb 17, 10:48 AM PST · 13377 days ago · 6 km deep · 84 km away
5. 2.54 km N of Day Valley, CaliforniaFri, Feb 16, 4:29 PM PST · 13377 days ago · 16 km deep · 67 km away
6. 2.83 km NNW of Interlaken, CaliforniaFri, Feb 16, 3:58 PM PST · 13378 days ago · 14 km deep · 71 km away
7. 1.88 km N of Day Valley, CaliforniaFri, Feb 16, 5:14 AM PST · 13378 days ago · 3 km deep · 64 km away
8. 3.32 km ESE of Aromas, CaliforniaFri, Feb 16, 2:48 AM PST · 13378 days ago · 8 km deep · 79 km away
9. 2.51 km SSW of Monte Sereno, CaliforniaThu, Feb 15, 11:36 PM PST · 13378 days ago · 3 km deep · 63 km away
10. 1.95 km NNW of Aromas, CaliforniaThu, Feb 15, 8:27 PM PST · 13378 days ago · 10 km deep · 75 km away
11. 1.58 km ENE of Morgan Hill, CaliforniaThu, Feb 15, 8:00 PM PST · 13378 days ago · 3 km deep · 47 km away
12. 1.72 km SW of Saratoga, CaliforniaThu, Feb 15, 6:51 PM PST · 13378 days ago · 10 km deep · 65 km away
13. 1.94 km NE of Amesti, CaliforniaThu, Feb 15, 5:40 AM PST · 13379 days ago · 12 km deep · 70 km away
14. 1.59 km NNE of Morgan Hill, CaliforniaThu, Feb 15, 3:18 AM PST · 13379 days ago · 3 km deep · 44 km away
15. 2.72 km ESE of Aromas, CaliforniaThu, Feb 15, 1:54 AM PST · 13379 days ago · 7 km deep · 79 km away
16. 1.75 km SSW of Ridgemark, CaliforniaWed, Feb 14, 7:37 PM PST · 13379 days ago · 10 km deep · 91 km away
17. 2.0Northern CaliforniaWed, Feb 14, 12:37 PM PST · 13380 days ago · 10 km deep · 69 km away
18. 2.84 km ENE of Interlaken, CaliforniaWed, Feb 14, 5:12 AM PST · 13380 days ago · 6 km deep · 72 km away
19. 2.02 km ESE of Aromas, CaliforniaWed, Feb 14, 4:18 AM PST · 13380 days ago · 7 km deep · 79 km away
20. 2.72 km ESE of Aromas, CaliforniaWed, Feb 14, 4:14 AM PST · 13380 days ago · 7 km deep · 79 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc152939. Read Sat, Oct 3, 2026, 11:40 AM UTC.