M3.8 Earthquake 15 km NE of Hermleigh, Texas — July 30, 2024
2024-07-30 17:43:08 UTC (2024-07-30) · approx. 10:43 AM UTC-7 local
Felt by 10 people across nearby locations. Maximum shaking intensity MMI 4.1 (moderate).
On July 30, 2024 at 17:43 UTC, a magnitude 3.8 shallow crustal earthquake struck 15 km NE of Hermleigh, Texas, at a depth of 8.1 km and coordinates 32.7440°, -100.6490°. The earthquake was reported felt by 10 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 4.1 (moderate). This earthquake was detected by 29 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 226, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Texas, a region characterized by a mix of natural intraplate seismicity and induced events in the Permian Basin linked to wastewater disposal. View all earthquakes in Texas.
Learn more: Magnitude scale · Aftershock sequences
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 10 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-100.6490°E
Technical Information
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Common Questions
How strong was the magnitude 3.8 earthquake near Hermleigh, Texas?
The magnitude 3.8 earthquake that struck 15 km NE of Hermleigh, Texas on July 30, 2024 at 17:43 UTC had a depth of 8.1 km. It was felt by 10 people with maximum shaking intensity of MMI 4.1 (moderate). For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 32.7440°, -100.6490°, which is 15 km NE of Hermleigh, Texas. View all earthquakes in Texas.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.8 earthquakes can continue for several days and gradually diminish over time.
Has Texas had earthquakes this big before?
The largest recorded earthquake in Texas was the M5.8 Valentine earthquake of August 16, 1931. Today's magnitude 3.8 event is significantly smaller than that historical record.
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Location
Authoritative source: USGS event page (event ID: tx2024owwf). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, July 30, 2024). M3.8 Earthquake 15 km NE of Hermleigh, Texas — July 30, 2024. Retrieved October 11, 2024 from https://www.earthquaketracker.org/earthquakes/event/tx2024owwf/