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Earthquakes Near Hecla, South Dakota 57446 Today

Live data from USGS · Monitoring ZIP code 57446 Updated just now

No earthquakes detected within 250 miles of Hecla in the past 24 hours. The ground is quiet.

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Recent Earthquakes Near Hecla, South Dakota

0 earthquakes have been recorded within 250 miles of Hecla, South Dakota in the past 24 hours. Alertra monitors seismic activity near ZIP code 57446 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 Hecla, this earthquake watch dashboard provides real-time magnitude data, an interactive seismic map, and earthquake history going back 15+ years.

Earthquake Alerts for Hecla, South Dakota

Alertra delivers real-time earthquake alerts for Hecla and the surrounding 57446 area. When seismic activity is detected nearby, push notifications are sent within 60 seconds — no manual earthquake watch required.

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

📊 Earthquake Watch — Hecla

Live seismic risk assessment · Updated every 60 seconds from USGS

Current Threat Level
All Quiet
LowModerateHigh
Threat score: 0 / 100

No earthquakes detected near Hecla. Everything is calm.

Earthquakes nearby 0
Closest to you None detected
Strongest in last 24hr None detected
Tracking Area
Hecla
LIVE EARTHQUAKES
Found 0 in region
Major (6.0+)
Moderate (4.0 - 5.9)
Minor (Below 4.0)
Your Location

🌍 Recent Earthquakes Near Hecla

Past 24 hours within 250 miles · Source: USGS

Showing events within 250 miles · Past 24 hours · Source: USGS
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No earthquakes detected within 250 miles in the past 24 hours.

📈 Earthquake History — Hecla

Since 2006 · M2.5+ · 250 mi radius

Hecla has recorded 27 earthquakes of magnitude 2.5 or greater within 250 miles since 2006. The largest was a M4.2 on Sep 25, 2009, located 15 km E of Alzada, Montana. On average, the area experiences approximately 16 notable seismic events per year.

M2.5+ in Past 7 Days

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Since 2006 · M2.5+ · 250 mi

Yearly Activity · 27 events

Past 3 Months
View:
M2.5–4 (bars)
M4+ (line, right axis)
Yearly Earthquake Activity by Magnitude0246011'10'19'22'252006: 1 (M2.5–4), 0 (M4+)2008: 1 (M2.5–4), 0 (M4+)2010: 1 (M2.5–4), 0 (M4+)2011: 2 (M2.5–4), 0 (M4+)2014: 1 (M2.5–4), 0 (M4+)2015: 1 (M2.5–4), 0 (M4+)2017: 2 (M2.5–4), 0 (M4+)2018: 1 (M2.5–4), 0 (M4+)2019: 1 (M2.5–4), 0 (M4+)2020: 2 (M2.5–4), 0 (M4+)2021: 5 (M2.5–4), 0 (M4+)2022: 2 (M2.5–4), 0 (M4+)2023: 2 (M2.5–4), 0 (M4+)2024: 2 (M2.5–4), 0 (M4+)2025: 2 (M2.5–4), 0 (M4+)2026: 1 (M2.5–4), 0 (M4+)
Event count (bars)
Seismic energy index (line)
Yearly Seismic Energy Release02460200k400k600k'10'19'22'252006: 1 events, Energy: 22.4k2008: 1 events, Energy: 7.9k2010: 1 events, Energy: 11.2k2011: 2 events, Energy: 94.7k2014: 1 events, Energy: 31.6k2015: 1 events, Energy: 89.1k2017: 2 events, Energy: 47.5k2018: 1 events, Energy: 63.1k2019: 1 events, Energy: 22.4k2020: 2 events, Energy: 68.7k2021: 5 events, Energy: 483.7k2022: 2 events, Energy: 68.7k2023: 2 events, Energy: 42.8k2024: 2 events, Energy: 360.4k2025: 2 events, Energy: 13.6k2026: 1 events, Energy: 11.2k
Largest Recorded
M4.2
15 km E of Alzada, Montana
Sep 25, 2009
Avg Noticeable / Year
0
Estimated felt (MMI ≥ II)

Strongest Recorded Earthquakes

M4.2 Sep 25, 2009
15 km E of Alzada, Montana
M4.1 Jun 30, 2018
5 km SE of Arnold, Nebraska
M4.0 Nov 14, 2011
South Dakota
M3.9 Jul 1, 2018
8 km SE of Arnold, Nebraska
M3.8 Jul 2, 2018
2 km SE of Arnold, Nebraska
M3.7 May 30, 2024
38 km NNW of Pierre, South Dakota
📊 Looking for detailed historical data?

🛡️ Earthquake Safety — Hecla, South Dakota

What Hecla 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 Hecla with live tracking

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

Earthquake FAQ — Hecla, South Dakota

Was there an earthquake in Hecla today?

No earthquakes detected within 250 miles of Hecla in the past 24 hours. The ground is quiet. This page shows all earthquakes detected within 250 miles of Hecla in the past 24 hours, updated every 60 seconds from USGS.

Did an earthquake just happen near Hecla?

Check the live earthquake table above for the most recent seismic events near 57446. Alertra detects earthquakes right now as they happen and can send you instant earthquake alerts for Hecla.

What is the earthquake history for Hecla, South Dakota?

Alertra tracks USGS seismic records going back 15+ years for the Hecla area. View the historical trends chart above to see yearly earthquake frequency and the largest recorded event near 57446.

How do I get earthquake alerts for Hecla?

Download the Alertra app to receive push notifications within 60 seconds of any earthquake detected near 57446. Alertra monitors USGS seismic data 24/7 — no manual earthquake watch required.

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