ALERTRA
325 earthquakes globally today

Earthquakes Near San Dimas, California 91773 Today

Live data from USGS Β· Monitoring ZIP code 91773 Updated just now

126 tiny quakes nearby. Too small to feel. Completely normal background activity.

πŸ“± Get earthquake alerts β€” download the app for real-time notifications

Recent Earthquakes Near San Dimas, California

126 earthquakes have been recorded within 250 miles of San Dimas, California in the past 24 hours. Alertra monitors seismic activity near ZIP code 91773 using live data from the U.S. Geological Survey (USGS), updated every 60 seconds. Whether you felt shaking or are checking if an earthquake just happened near San Dimas, this earthquake watch dashboard provides real-time magnitude data, an interactive seismic map, and earthquake history going back 15+ years.

Earthquake Alerts for San Dimas, California

Alertra delivers real-time earthquake alerts for San Dimas and the surrounding 91773 area. When seismic activity is detected nearby, push notifications are sent within 60 seconds β€” no manual earthquake watch required.

Coming soon! We're working on bringing monitoring to Alertra.

πŸ“Š Earthquake Watch β€” San Dimas

Live seismic risk assessment Β· Updated every 60 seconds from USGS

Current Threat Level
Normal
LowModerateHigh
Threat score: 18 / 100

Some seismic activity near San Dimas. Most too small to feel.

Earthquakes nearby 126
Closest to you M0.8, 2 mi
Strongest in last 24hr M2.8, Rarely felt
Last felt M4.0+ 1 day ago
Tracking Area
San Dimas
LIVE EARTHQUAKES
Found 126 in region
Major (6.0+)
Moderate (4.0 - 5.9)
Minor (Below 4.0)
Your Location

🌍 Recent Earthquakes Near San Dimas

Past 24 hours within 250 miles Β· Source: USGS

Showing events within 250 miles Β· Past 24 hours Β· Source: USGS
Sort by:
MagnitudeWhat You'd FeelLocationDistanceWhen
M2.8 		Rarely felt 18 km WSW of Johannesburg, CA 83 mi 5:44 AM Details β†’
M2.6 		Rarely felt 18 km WSW of Johannesburg, CA 82 mi 6:29 PM Details β†’
M2.5 		Rarely felt 3 km SSE of Frazier Park, CA 80 mi 1:50 PM Details β†’
M2.4 		Rarely felt 18 km WSW of Johannesburg, CA 82 mi 6:54 PM Details β†’
M2.3 		Rarely felt 17 km WSW of Johannesburg, CA 84 mi 10:49 PM Details β†’
M2.2 		Rarely felt 17 km WSW of Johannesburg, CA 83 mi 5:01 PM Details β†’
M2.1 		Rarely felt 6 km SSE of Parkfield, CA 190 mi 11:51 AM Details β†’
M2.1 		Rarely felt 19 km NNE of Indio, CA 95 mi 7:04 PM Details β†’
M2.0 		Rarely felt 10 km NNW of Simmler, CA 157 mi 12:53 PM Details β†’
M2.0 		Not felt 44 km S of Rachel, Nevada 244 mi 7:05 AM Details β†’
M2.0 		Not felt 19 km WSW of Johannesburg, CA 82 mi 7:11 PM Details β†’
M1.9 		Not felt 33 km NE of Ensenada, B.C., MX 162 mi 6:42 AM Details β†’
M1.9 		Not felt 4 km ESE of Vincent, CA 31 mi 5:31 AM Details β†’
M1.8 		Not felt 6 km SE of Parkfield, CA 190 mi 11:52 AM Details β†’
M1.8 		Not felt 5 km WSW of Anza, CA 74 mi 4:19 PM Details β†’
M1.7 		Not felt 22 km ESE of Anza, CA 89 mi 4:56 AM Details β†’
M1.7 		Not felt 5 km NNW of Boron, CA 65 mi 11:19 PM Details β†’
M1.7 		Not felt 17 km WSW of Johannesburg, CA 83 mi 1:42 PM Details β†’
M1.6 		Not felt 18 km WSW of Johannesburg, CA 83 mi 4:57 PM Details β†’
M1.6 		Not felt 17 km WSW of Johannesburg, CA 83 mi 6:26 PM Details β†’
M1.6 		Not felt 7 km SSE of Malibu Beach, CA 49 mi 5:56 AM Details β†’
M1.6 		Not felt 17 km WSW of Johannesburg, CA 83 mi 7:59 PM Details β†’
M1.5 		Not felt 2 km SE of Frazier Park, CA 80 mi 3:56 PM Details β†’
M1.5 		Not felt 20 km ENE of Little Lake, CA 132 mi 11:25 AM Details β†’
M1.5 		Not felt 2 km WSW of Wilkerson, CA 221 mi 3:59 AM Details β†’
M1.4 		Not felt 18 km WSW of Johannesburg, CA 82 mi 7:29 PM Details β†’
M1.4 		Not felt 2 km W of Orange, CA 21 mi 12:26 AM Details β†’
M1.4 		Not felt 17 km WSW of Johannesburg, CA 83 mi 3:56 AM Details β†’
M1.3 		Not felt 18 km WSW of Johannesburg, CA 83 mi 5:59 PM Details β†’
M1.3 		Not felt 23 km ENE of San Lucas, CA 223 mi 3:44 PM Details β†’
M1.3 		Not felt 17 km WSW of Johannesburg, CA 83 mi 6:19 AM Details β†’
M1.3 		Not felt 15 km SE of Pinnacles, CA 243 mi 3:42 AM Details β†’
M1.3 		Not felt 17 km WSW of Johannesburg, CA 83 mi 4:50 PM Details β†’
M1.2 		Not felt 5 km SSE of Home Gardens, CA 26 mi 6:15 PM Details β†’
M1.2 		Not felt 17 km SW of La Quinta, CA 86 mi 7:57 AM Details β†’
M1.2 		Not felt 11 km NNW of Anza, CA 70 mi 7:45 AM Details β†’
M1.2 		Not felt 18 km WSW of Johannesburg, CA 83 mi 11:04 AM Details β†’
M1.2 		Not felt 18 km WSW of Johannesburg, CA 82 mi 7:26 PM Details β†’
M1.2 		Not felt 17 km WSW of Johannesburg, CA 84 mi 10:01 PM Details β†’
M1.2 		Not felt 6 km SSE of Redlands, CA 38 mi 7:14 AM Details β†’
M1.2 		Not felt 0 km E of Loma Linda, CA 32 mi 12:07 AM Details β†’
M1.2 		Not felt 17 km WSW of Johannesburg, CA 84 mi 7:19 PM Details β†’
M1.2 		Not felt 17 km WSW of Johannesburg, CA 83 mi 4:49 PM Details β†’
M1.1 		Not felt 17 km WSW of Johannesburg, CA 83 mi 5:06 PM Details β†’
M1.1 		Not felt 5 km SSE of Parkfield, CA 190 mi 12:03 PM Details β†’
M1.1 		Not felt 9 km S of Idyllwild, CA 69 mi 2:08 AM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 7:17 PM Details β†’
M1.1 		Not felt 6 km S of Mojave, CA 65 mi 6:57 PM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 7:35 PM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 82 mi 7:16 PM Details β†’
M1.1 		Not felt 17 km WSW of Johannesburg, CA 84 mi 7:09 PM Details β†’
M1.1 		Not felt 17 km N of Indio, CA 93 mi 2:05 AM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 4:53 PM Details β†’
M1.1 		Not felt 4 km N of Frazier Park, CA 83 mi 7:52 PM Details β†’
M1.1 		Not felt 16 km SSW of Tehachapi, CA 73 mi 7:22 PM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 4:54 PM Details β†’
M1.1 		Not felt 7 km E of Calimesa, CA 48 mi 10:06 PM Details β†’
M1.1 		Not felt 6 km E of Calimesa, CA 48 mi 5:00 PM Details β†’
M1.1 		Not felt 23 km N of Ridgecrest, CA 119 mi 11:54 AM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 9:28 PM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 10:23 AM Details β†’
M1.1 		Not felt 17 km WSW of Johannesburg, CA 84 mi 8:46 AM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 10:53 PM Details β†’
M1.1 		Not felt 18 km WSW of Johannesburg, CA 83 mi 5:07 PM Details β†’
M1.1 		Not felt 2 km SSE of Frazier Park, CA 80 mi 4:16 PM Details β†’
M1.1 		Not felt 11 km WSW of Niland, CA 140 mi 3:31 AM Details β†’
M1.1 		Not felt 17 km WSW of Johannesburg, CA 83 mi 5:07 PM Details β†’
M1.0 		Not felt 17 km WSW of Johannesburg, CA 84 mi 8:46 PM Details β†’
M1.0 		Not felt 22 km NNW of Borrego Springs, CA 91 mi 6:31 PM Details β†’
M1.0 		Not felt 10 km N of Coso Junction, CA 140 mi 5:58 PM Details β†’
M1.0 		Not felt 17 km WSW of Johannesburg, CA 83 mi 4:45 PM Details β†’
M1.0 		Not felt 18 km WSW of Johannesburg, CA 82 mi 7:18 PM Details β†’
M1.0 		Not felt 20 km E of Little Lake, CA 127 mi 5:23 PM Details β†’
M1.0 		Not felt 7 km W of Tecate, B.C., MX 124 mi 2:56 PM Details β†’
M1.0 		Not felt 17 km WSW of Johannesburg, CA 84 mi 8:33 PM Details β†’
M0.9 		Not felt 7 km WNW of Lake Elsinore, CA 38 mi 12:40 PM Details β†’
M0.9 		Not felt 17 km WSW of Johannesburg, CA 84 mi 7:25 PM Details β†’
M0.9 		Not felt 17 km WSW of Johannesburg, CA 84 mi 4:01 PM Details β†’
M0.9 		Not felt 20 km N of Searles Valley, CA 129 mi 2:34 AM Details β†’
M0.9 		Not felt 15 km NE of Little Lake, CA 132 mi 1:21 AM Details β†’
M0.9 		Not felt 6 km SSE of Redlands, CA 38 mi 7:24 AM Details β†’
M0.9 		Not felt 19 km WSW of Johannesburg, CA 83 mi 5:19 AM Details β†’
M0.9 		Not felt 17 km WSW of Johannesburg, CA 82 mi 7:18 PM Details β†’
M0.8 		Not felt 3 km NE of San Dimas, CA 2 mi 8:40 AM Details β†’
M0.8 		Not felt 7 km SSW of Redlands, CA 36 mi 8:26 AM Details β†’
M0.8 		Not felt 17 km WSW of Johannesburg, CA 83 mi 5:21 PM Details β†’
M0.8 		Not felt 3 km SSW of Redlands, CA 36 mi 6:16 AM Details β†’
M0.8 		Not felt 19 km WSW of Johannesburg, CA 83 mi 5:47 AM Details β†’
M0.8 		Not felt 4 km ENE of Llano, CA 28 mi 3:26 AM Details β†’
M0.8 		Not felt 3 km W of Redlands, CA 34 mi 2:04 PM Details β†’
M0.8 		Not felt 18 km WSW of Johannesburg, CA 83 mi 4:18 AM Details β†’
M0.8 		Not felt 15 km W of Johannesburg, CA 87 mi 7:53 AM Details β†’
M0.8 		Not felt 16 km WSW of Johannesburg, CA 84 mi 9:25 PM Details β†’
M0.8 		Not felt 20 km WNW of Progreso, B.C., MX 155 mi 4:18 AM Details β†’
M0.8 		Not felt 18 km WSW of Johannesburg, CA 82 mi 4:50 PM Details β†’
M0.8 		Not felt 5 km S of Redlands, CA 37 mi 3:00 AM Details β†’
M0.7 		Not felt 12 km SW of Searles Valley, CA 111 mi 2:18 AM Details β†’
M0.7 		Not felt 23 km N of Ridgecrest, CA 119 mi 11:52 AM Details β†’
M0.7 		Not felt 7 km E of Calimesa, CA 48 mi 10:15 PM Details β†’
M0.7 		Not felt 19 km NNE of Indio, CA 95 mi 8:34 PM Details β†’
M0.7 		Not felt 16 km ENE of Thousand Palms, CA 92 mi 2:32 PM Details β†’
M0.7 		Not felt 3 km NW of Hemet, CA 52 mi 7:07 PM Details β†’
M0.7 		Not felt 7 km ESE of Valle Vista, CA 63 mi 5:27 AM Details β†’
M0.7 		Not felt 23 km N of Ridgecrest, CA 119 mi 11:55 AM Details β†’
M0.6 		Not felt 11 km NNE of Borrego Springs, CA 99 mi 12:55 PM Details β†’
M0.6 		Not felt 18 km SSW of Searles Valley, CA 106 mi 5:38 AM Details β†’
M0.6 		Not felt 3 km E of Running Springs, CA 43 mi 11:09 PM Details β†’
M0.6 		Not felt 19 km NNE of Indio, CA 95 mi 5:38 PM Details β†’
M0.6 		Not felt 18 km WSW of Johannesburg, CA 82 mi 4:53 PM Details β†’
M0.6 		Not felt 4 km WSW of Anza, CA 74 mi 3:20 PM Details β†’
M0.6 		Not felt 15 km SW of Johannesburg, CA 80 mi 5:32 PM Details β†’
M0.5 		Not felt 7 km WSW of Anza, CA 74 mi 6:45 AM Details β†’
M0.5 		Not felt 18 km NW of Parkfield, CA 204 mi 1:36 PM Details β†’
M0.5 		Not felt 6 km SSE of Redlands, CA 38 mi 7:33 AM Details β†’
M0.5 		Not felt 20 km NNE of Indio, CA 95 mi 5:38 PM Details β†’
M0.5 		Not felt 19 km W of Searles Valley, CA 116 mi 10:59 PM Details β†’
M0.4 		Not felt 16 km E of Little Lake, CA 125 mi 4:15 AM Details β†’
M0.4 		Not felt 4 km WSW of Anza, CA 74 mi 1:08 PM Details β†’
M0.4 		Not felt 24 km N of Ridgecrest, CA 120 mi 11:56 AM Details β†’
M0.4 		Not felt 7 km WSW of Anza, CA 73 mi 7:12 AM Details β†’
M0.4 		Not felt 24 km N of Ridgecrest, CA 119 mi 11:54 AM Details β†’
M0.3 		Not felt 5 km SSE of Parkfield, CA 190 mi 12:10 PM Details β†’
M0.3 		Not felt 7 km WSW of Anza, CA 73 mi 6:18 AM Details β†’
M0.2 		Not felt 11 km SSW of Searles Valley, CA 110 mi 7:35 PM Details β†’
M0.1 		Not felt 9 km S of Idyllwild, CA 71 mi 7:49 AM Details β†’
M-0.1 		Not felt 7 km WSW of Anza, CA 73 mi 6:47 AM Details β†’

πŸ“ˆ Earthquake History β€” San Dimas

Since 2010 Β· M2.5+ Β· 250 mi radius

San Dimas has recorded 14,541 earthquakes of magnitude 2.5 or greater within 250 miles since 2010. The largest was a M7.1 on Jul 6, 2019, located Ridgecrest Earthquake Sequence. On average, the area experiences approximately 1231 notable seismic events per year.

M2.5+ in Past 7 Days

Wed
0
β€”
Thu
3
MAX M3.4
Fri
0
β€”
Sat
1
MAX M3.0
Sun
6
MAX M4.1
Mon
3
MAX M4.3
Tue
1
MAX M2.8
Since 2010 Β· M2.5+ Β· 250 mi

Yearly Activity Β· 14541 events

Past Week
View:
M2.5–4 (bars)
M4+ (line, right axis)
Yearly Earthquake Activity by Magnitude01k2k3k4k050100150'10'13'16'19'22'252010: 2,400 (M2.5–4), 91 (M4+)2011: 797 (M2.5–4), 32 (M4+)2012: 756 (M2.5–4), 36 (M4+)2013: 538 (M2.5–4), 18 (M4+)2014: 564 (M2.5–4), 16 (M4+)2015: 435 (M2.5–4), 13 (M4+)2016: 526 (M2.5–4), 14 (M4+)2017: 477 (M2.5–4), 6 (M4+)2018: 450 (M2.5–4), 13 (M4+)2019: 3,121 (M2.5–4), 134 (M4+)2020: 931 (M2.5–4), 36 (M4+)2021: 645 (M2.5–4), 19 (M4+)2022: 453 (M2.5–4), 17 (M4+)2023: 486 (M2.5–4), 16 (M4+)2024: 651 (M2.5–4), 36 (M4+)2025: 485 (M2.5–4), 12 (M4+)2026: 305 (M2.5–4), 12 (M4+)
Event count (bars)
Seismic energy index (line)
Yearly Seismic Energy Release01k2k3k4k020.0B40.0B60.0B'10'13'16'19'22'252010: 2,491 events, Energy: 938.0M2011: 829 events, Energy: 149.2M2012: 792 events, Energy: 3.3B2013: 556 events, Energy: 94.1M2014: 580 events, Energy: 119.3M2015: 448 events, Energy: 85.1M2016: 540 events, Energy: 147.7M2017: 483 events, Energy: 32.1M2018: 463 events, Energy: 159.6M2019: 3,255 events, Energy: 49.8B2020: 967 events, Energy: 931.3M2021: 664 events, Energy: 173.6M2022: 470 events, Energy: 2.1B2023: 502 events, Energy: 121.4M2024: 687 events, Energy: 274.6M2025: 497 events, Energy: 112.4M2026: 317 events, Energy: 73.2M
Largest Recorded
M7.1
Ridgecrest Earthquake Sequence
Jul 6, 2019
Avg Noticeable / Year
52
Estimated felt (MMI β‰₯ II)

Strongest Recorded Earthquakes

M7.1 Jul 6, 2019
Ridgecrest Earthquake Sequence
M6.5 May 15, 2020
Monte Cristo Range, NV Earthquake
M6.4 Jul 4, 2019
Ridgecrest Earthquake Sequence
M6.3 Dec 14, 2012
279 km SSW of Avalon, California
M6.2 Nov 22, 2022
28 km SW of Las Brisas, Mexico
M6.0 Jul 8, 2021
Antelope Valley, CA
πŸ“Š Looking for detailed historical data?

πŸ›‘οΈ Earthquake Safety β€” San Dimas, California

What San Dimas residents should know before, during, and after an earthquake

🏠 Step 1

Before: Secure Your Space

Bolt heavy furniture to walls. Keep an emergency kit within arm's reach of where you sleep. Know your exits.

πŸ›‘οΈ Step 2

During: Drop, Cover, Hold On

Drop to your hands and knees. Take cover under sturdy furniture. Hold on until the shaking stops. Stay away from windows.

πŸšͺ Step 3

After: Check and Evacuate

Check for injuries and damage. If you smell gas, leave immediately and call 911. Expect aftershocks.

72-Hour Emergency Kit

βœ“ 1 gallon of water per person per day
βœ“ Non-perishable food (3-day supply)
βœ“ Battery-powered NOAA weather radio
βœ“ Flashlight and extra batteries
βœ“ First aid kit
βœ“ Whistle to signal for help
βœ“ N95 dust masks
βœ“ Plastic sheeting and duct tape
βœ“ Wrench or pliers to turn off utilities
βœ“ Manual can opener

Notable US Seismic History

1994 Northridge, CA
M6.7
57 fatalities, $50B in damage. One of the costliest US natural disasters.
2011 Virginia
M5.8
Felt across 22 states. The most widely felt earthquake in US history.
2018 Anchorage, AK
M7.1
Major infrastructure damage across south-central Alaska.

πŸ“ Nearby Earthquake Monitoring

Cities near San Dimas with live tracking

πŸ”” Get earthquake alerts for San Dimas
Alertra monitors live data 24/7 and sends push notifications the moment a earthquake is detected near you.

🏒 About Alertra

Alertra is an earthquake monitoring platform built by a team of engineers in Arizona focused on natural disaster safety technology. We provide real-time earthquake alerts and risk assessments to help communities prepare before disaster strikes.

Alertra ingests real-time seismic data from the U.S. Geological Survey (USGS) and combines it with over 15 years of legacy earthquake records to build localized risk models for communities like San Dimas. Our threat scores, historical trend charts, and proximity alerts are all derived from this data β€” updated every 60 seconds.

Earthquake FAQ β€” San Dimas, California

Was there an earthquake in San Dimas today?

126 tiny quakes nearby. Too small to feel. Completely normal background activity. This page shows all earthquakes detected within 250 miles of San Dimas in the past 24 hours, updated every 60 seconds from USGS.

Did an earthquake just happen near San Dimas?

Check the live earthquake table above for the most recent seismic events near 91773. Alertra detects earthquakes right now as they happen and can send you instant earthquake alerts for San Dimas.

What is the earthquake history for San Dimas, California?

Alertra tracks USGS seismic records going back 15+ years for the San Dimas area. View the historical trends chart above to see yearly earthquake frequency and the largest recorded event near 91773.

How do I get earthquake alerts for San Dimas?

Download the Alertra app to receive push notifications within 60 seconds of any earthquake detected near 91773. Alertra monitors USGS seismic data 24/7 β€” no manual earthquake watch required.

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We're putting the final touches on the Alertra app. Enter your email below to join the waitlist and get early access.