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223 earthquakes globally today

Earthquakes Near Castro Valley, California 94546 Today

Live data from USGS · Monitoring ZIP code 94546 Updated just now

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

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Recent Earthquakes Near Castro Valley, California

46 earthquakes have been recorded within 250 miles of Castro Valley, California in the past 24 hours. Alertra monitors seismic activity near ZIP code 94546 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 Castro Valley, this earthquake watch dashboard provides real-time magnitude data, an interactive seismic map, and earthquake history going back 15+ years.

Earthquake Alerts for Castro Valley, California

Alertra delivers real-time earthquake alerts for Castro Valley and the surrounding 94546 area. When seismic activity is detected nearby, push notifications are sent within 60 seconds — no manual earthquake watch required.

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📊 Earthquake Watch — Castro Valley

Live seismic risk assessment · Updated every 60 seconds from USGS

Current Threat Level
All Quiet
LowModerateHigh
Threat score: 12 / 100

Some seismic activity near Castro Valley. Most too small to feel.

Earthquakes nearby 46
Closest to you M1.3, 7 mi
Strongest in last 24hr M2.2, Rarely felt
Last felt M4.0+ 15 days ago
Tracking Area
Castro Valley
LIVE EARTHQUAKES
Found 46 in region
Major (6.0+)
Moderate (4.0 - 5.9)
Minor (Below 4.0)
Your Location

🌍 Recent Earthquakes Near Castro Valley

Past 24 hours within 250 miles · Source: USGS

Showing events within 250 miles · Past 24 hours · Source: USGS
Sort by:
MagnitudeWhat You'd FeelLocationDistanceWhen
M2.2 		Rarely felt 4 km ESE of San Ramon, CA 8 mi 10:54 PM Details →
M2.2 		Rarely felt 2 km E of Aromas, CA 64 mi 6:19 PM Details →
M2.2 		Rarely felt 15 km NE of Angwin, CA 67 mi 4:37 AM Details →
M2.2 		Rarely felt 12 km NW of Parkfield, CA 149 mi 7:33 PM Details →
M2.0 		Rarely felt 22 km SE of Rio Dell, CA 206 mi 9:48 PM Details →
M1.9 		Not felt 9 km WNW of Cobb, CA 86 mi 4:07 PM Details →
M1.9 		Not felt 27 km W of Hayfork, CA 207 mi 6:25 AM Details →
M1.9 		Not felt 12 km NNW of Petrolia, CA 221 mi 6:06 AM Details →
M1.8 		Not felt 6 km NNW of The Geysers, CA 84 mi 10:39 AM Details →
M1.8 		Not felt 5 km NW of Parkfield, CA 153 mi 6:15 AM Details →
M1.8 		Not felt 14 km NW of Parkfield, CA 148 mi 9:04 PM Details →
M1.6 		Not felt 5 km SSE of Rodeo, CA 19 mi 7:59 PM Details →
M1.6 		Not felt 6 km WNW of Cobb, CA 85 mi 12:38 AM Details →
M1.6 		Not felt 24 km SW of Independence, CA 219 mi 1:11 PM Details →
M1.4 		Not felt 5 km SSW of Los Alamos, CA 232 mi 1:18 AM Details →
M1.4 		Not felt 5 km NW of The Geysers, CA 84 mi 11:38 PM Details →
M1.3 		Not felt 3 km WSW of Alamo, CA 7 mi 9:59 PM Details →
M1.2 		Not felt 16 km NW of Parkfield, CA 147 mi 7:20 AM Details →
M1.2 		Not felt 9 km WNW of Cobb, CA 86 mi 5:03 PM Details →
M1.1 		Not felt 8 km ESE of Cloverdale, CA 85 mi 6:04 PM Details →
M1.1 		Not felt 7 km ESE of Cloverdale, CA 85 mi 6:53 AM Details →
M1.1 		Not felt 2 km SSW of Cobb, CA 82 mi 1:13 PM Details →
M1.1 		Not felt 6 km WNW of The Geysers, CA 84 mi 7:28 PM Details →
M1.1 		Not felt 2 km NNW of The Geysers, CA 82 mi 12:03 PM Details →
M1.1 		Not felt 5 km WNW of The Geysers, CA 83 mi 12:39 PM Details →
M1.1 		Not felt 6 km NW of The Geysers, CA 84 mi 2:02 AM Details →
M1.0 		Not felt 7 km NW of The Geysers, CA 85 mi 5:00 AM Details →
M1.0 		Not felt 14 km NW of Parkfield, CA 148 mi 8:51 PM Details →
M1.0 		Not felt 6 km WNW of Cobb, CA 85 mi 12:41 AM Details →
M1.0 		Not felt 6 km WNW of Cobb, CA 85 mi 9:32 PM Details →
M0.9 		Not felt 11 km NW of The Geysers, CA 87 mi 3:44 AM Details →
M0.9 		Not felt 8 km W of The Geysers, CA 83 mi 6:11 PM Details →
M0.9 		Not felt 6 km WNW of Cobb, CA 85 mi 11:01 AM Details →
M0.8 		Not felt 7 km NW of The Geysers, CA 85 mi 1:16 AM Details →
M0.8 		Not felt 2 km NE of The Geysers, CA 81 mi 12:02 AM Details →
M0.8 		Not felt 7 km NW of The Geysers, CA 85 mi 8:59 AM Details →
M0.8 		Not felt 6 km WNW of Cobb, CA 85 mi 12:35 AM Details →
M0.8 		Not felt 10 km WNW of The Geysers, CA 86 mi 6:52 PM Details →
M0.7 		Not felt 7 km NW of The Geysers, CA 85 mi 7:12 PM Details →
M0.7 		Not felt 10 km WNW of The Geysers, CA 86 mi 9:10 PM Details →
M0.7 		Not felt 9 km WNW of Cobb, CA 86 mi 5:11 PM Details →
M0.6 		Not felt 6 km WNW of Cobb, CA 85 mi 12:40 AM Details →
M0.5 		Not felt 8 km W of Cobb, CA 86 mi 8:38 AM Details →
M0.3 		Not felt 6 km NNW of The Geysers, CA 84 mi 12:22 PM Details →
M0.3 		Not felt 9 km NW of The Geysers, CA 86 mi 12:58 PM Details →
M0.3 		Not felt 10 km WNW of Cobb, CA 87 mi 4:08 PM Details →

📈 Earthquake History — Castro Valley

Since 2009 · M2.5+ · 250 mi radius

Castro Valley has recorded 12,621 earthquakes of magnitude 2.5 or greater within 250 miles since 2009. The largest was a M7.1 on Jul 6, 2019, located Ridgecrest Earthquake Sequence. On average, the area experiences approximately 1152 notable seismic events per year.

M2.5+ in Past 7 Days

Sat
2
MAX M2.7
Sun
3
MAX M3.4
Mon
2
MAX M3.3
Tue
1
MAX M2.8
Wed
2
MAX M3.3
Thu
1
MAX M2.8
Fri
0
—
Since 2009 · M2.5+ · 250 mi

Yearly Activity · 12621 events

Past Week
View:
M2.5–4 (bars)
M4+ (line, right axis)
Yearly Earthquake Activity by Magnitude05001k1.5k2k050100'10'13'16'19'22'252009: 412 (M2.5–4), 5 (M4+)2010: 531 (M2.5–4), 17 (M4+)2011: 624 (M2.5–4), 25 (M4+)2012: 467 (M2.5–4), 14 (M4+)2013: 663 (M2.5–4), 19 (M4+)2014: 589 (M2.5–4), 13 (M4+)2015: 516 (M2.5–4), 11 (M4+)2016: 566 (M2.5–4), 24 (M4+)2017: 586 (M2.5–4), 11 (M4+)2018: 450 (M2.5–4), 9 (M4+)2019: 514 (M2.5–4), 19 (M4+)2020: 1,918 (M2.5–4), 90 (M4+)2021: 1,074 (M2.5–4), 41 (M4+)2022: 629 (M2.5–4), 26 (M4+)2023: 576 (M2.5–4), 28 (M4+)2024: 918 (M2.5–4), 39 (M4+)2025: 710 (M2.5–4), 21 (M4+)2026: 444 (M2.5–4), 22 (M4+)
Event count (bars)
Seismic energy index (line)
Yearly Seismic Energy Release01k2k3k010.0B20.0B30.0B40.0B'10'13'16'19'22'252009: 417 events, Energy: 51.3M2010: 548 events, Energy: 6.4B2011: 649 events, Energy: 113.4M2012: 481 events, Energy: 143.4M2013: 682 events, Energy: 483.8M2014: 602 events, Energy: 1.0B2015: 527 events, Energy: 396.4M2016: 590 events, Energy: 880.2M2017: 597 events, Energy: 48.5M2018: 459 events, Energy: 52.3M2019: 533 events, Energy: 329.4M2020: 2,008 events, Energy: 7.5B2021: 1,115 events, Energy: 3.6B2022: 655 events, Energy: 4.2B2023: 604 events, Energy: 509.7M2024: 957 events, Energy: 32.3B2025: 731 events, Energy: 119.0M2026: 466 events, Energy: 557.3M
Largest Recorded
M7.1
Ridgecrest Earthquake Sequence
Jul 6, 2019
Avg Noticeable / Year
46.1
Estimated felt (MMI ≥ II)

Strongest Recorded Earthquakes

M7.1 Jul 6, 2019
Ridgecrest Earthquake Sequence
M7.0 Dec 5, 2024
2024 Offshore Cape Mendocino, California Earthquake
M6.8 Mar 10, 2014
77 km WNW of Indianola, California
M6.6 Dec 8, 2016
164 km W of Ferndale, California
M6.5 May 15, 2020
Monte Cristo Range, NV Earthquake
M6.5 Jan 10, 2010
The 2010 Eureka, California Earthquake
📊 Looking for detailed historical data?

🛡️ Earthquake Safety — Castro Valley, California

What Castro Valley 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.

🛡️ 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.

🚪 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

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

📍 Nearby Earthquake Monitoring

Cities near Castro Valley with live tracking

🔔 Get earthquake alerts for Castro Valley
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 Castro Valley. Our threat scores, historical trend charts, and proximity alerts are all derived from this data — updated every 60 seconds.

Earthquake FAQ — Castro Valley, California

Was there an earthquake in Castro Valley today?

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

Did an earthquake just happen near Castro Valley?

Check the live earthquake table above for the most recent seismic events near 94546. Alertra detects earthquakes right now as they happen and can send you instant earthquake alerts for Castro Valley.

What is the earthquake history for Castro Valley, California?

Alertra tracks USGS seismic records going back 15+ years for the Castro Valley area. View the historical trends chart above to see yearly earthquake frequency and the largest recorded event near 94546.

How do I get earthquake alerts for Castro Valley?

Download the Alertra app to receive push notifications within 60 seconds of any earthquake detected near 94546. Alertra monitors USGS seismic data 24/7 — no manual earthquake watch required.

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