Contact | RSS | EN | DE | EL | ES | FR | IT | RU
Event status: uncertain, preliminary [?]

Reported quake or seismic-like event: Pennsylvania, 11 mi north of Wilmington, New Castle County, Delaware, USA, Friday, Sep 17, 2021 at 6:24 pm (GMT -4) -

Reported quake or seismic-like event: Pennsylvania, 11 mi north of Wilmington, New Castle County, Delaware, USA, Friday, Sep 17, 2021 at 6:24 pm (GMT -4) Reported quake or seismic-like event: Pennsylvania, 11 mi north of Wilmington, New Castle County, Delaware, USA, Friday, Sep 17, 2021 at 6:24 pm (GMT -4)
17 Sep 22:31 UTC: First to report: VolcanoDiscovery after 7 minutes.

Earthquake details

Date & timeSep 17, 2021 22:24:32 UTC -
Local time at epicenterFriday, Sep 17, 2021 at 6:24 pm (GMT -4)
Statusuncertain, preliminary
Magnitudeunknown (3?)
Depth10.0 km
Epicenter latitude / longitude39.90923°N / 75.5256°W (Delaware, Pennsylvania, United States)
Antipode39.909°S / 104.474°E
Shaking intensityVery weak shaking
Felt7 reports
Primary data sourceVolcanoDiscovery (User-reported shaking)
Nearby towns and cities5 km (3 mi) WNW of Chester Heights (pop: 2,630) | Show on map | Quakes nearby
9 km (6 mi) SE of West Chester (pop: 19,800) | Show on map | Quakes nearby
16 km (10 mi) WNW of Chester (pop: 34,100) | Show on map | Quakes nearby
18 km (11 mi) W of Springfield (pop: 23,400) | Show on map | Quakes nearby
18 km (11 mi) N of Wilmington (Delaware) (pop: 71,900) | Show on map | Quakes nearby
19 km (12 mi) SW of Wayne (pop: 30,900) | Show on map | Quakes nearby
20 km (13 mi) WSW of Drexel Hill (pop: 28,000) | Show on map | Quakes nearby
21 km (13 mi) SW of Radnor (pop: 30,900) | Show on map | Quakes nearby
31 km (19 mi) W of Philadelphia (pop: 1,567,400) | Show on map | Quakes nearby
172 km (107 mi) NE of Washington (District of Columbia) (pop: 601,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 24.2°C (76 F), humidity: 85%, wind: 2 m/s (4 kts) from ENE
Show interactive Map
[smaller] [bigger]

Seismograms

Seismic station: Greenville, DE, USA (GEDE/LD network) | Distance from quake: 14 km / 9 mi | Show on map | Station Info
Seismic station Greenville, DE, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
Show more

User reports for this quake (9)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Translate
21117 (123.6 km WSW of epicenter) [Map] / Weak shaking (MMI III) / 2-5 s : I was standing in my kitchen and felt the floor lightly vibrating and the pots and pans hanging from the ceiling began to rattle and shake against one another.  
Stratford, Camden, New Jersey (42.2 km ESE of epicenter) [Map] / not felt (reported through our app)
Matawan, NJ 07747 (122.9 km ENE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Window AC unit rattled and the light fixtures vibrated  
Rt 34 Matawan, no (119.2 km NE of epicenter) [Map] / not felt / 1-2 s : Floor shook  
Matawan nj (122.9 km ENE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short
Matawan,nj / Very weak shaking (MMI II) / rattling, vibrating / very short : All on first floor felt a jolt then shake/rattle.  
07747 / Very weak shaking (MMI II) / single vertical bump / very short
Matawan, NJ / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Aberdeen, New Jersey / Very weak shaking (MMI II) / vibration and rolling / very short

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version

Support us - Help us upgrade our services!

We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Design upgrade
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.
Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.
Volcanoes & Earthquakes
VolcanoDiscovery Home
Volcanoes | Earthquakes | Photos | Volcano News | App
Adventure & Study Travel
Tours to Volcanoes and Volcanic Areas: walking tours, photo tours, study tours
Tours & Dates | FAQ | About us
Get our newsletter!
Company info
Contact | Legal info | Terms & conditions
Follow us
Follow us on facebook Follow us on Instagram Follow us on Twitter Visit our Youtube channel
EN | DE | EL | ES | FR | IT | RU
VolcanoDiscovery GmbH, Germany, Reg. nr.: HRB 103744, EU Tax Id: DE 310 395 322 owned and created by
Dr. Tom Pfeiffer, volcanologist, volcano photographer, tour organizer member of
IAVCEI
Volcanological Society
Ecotourism Greece
Insured by R+V
VolcanoDiscovery © 2004- All Rights Reserved | Privacy - cookie settings