4.4

M4.4 Earthquake 10 km NNW of P?veh, Iran — May 21, 2021

2021-05-21 23:50:42 UTC (2021-05-21) · approx. 2:50 AM UTC+3 local

MagnitudeM4.4(mb)
Time23:50 UTC≈ 2:50 AM UTC+3
Depth10.0 kmshallow crustal
Coordinates35.134°, 46.327°
Felt by4DYFI responses
Status✓ Reviewed by USGS

On May 21, 2021 at 23:50 UTC, a magnitude 4.4 shallow crustal earthquake struck 10 km NNW of P?veh, Iran, at a depth of 10.0 km and coordinates 35.1339°, 46.3272°.

Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 35.13°, 46.33°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 4 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.4 earthquake near 10 km NNW of P?veh, Iran

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.4 mb
Depth
10.0 km
shallow crustal
Location
35.1339°N
46.3272°E
Felt Reports
4
DYFI responses
Community Intensity
4.5
CDI from reports

Technical Information

Event ID
us7000e57h
Event Type
earthquake
Status
✓ Reviewed
Significance
300
Azimuthal Gap
95.0°
Min Station Distance
0.858°
RMS Residual
0.66 sec
Last Updated
2022-08-09 05:12:01 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near P?veh, Iran?

The magnitude 4.4 earthquake that struck 10 km NNW of P?veh, Iran on May 21, 2021 at 23:50 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.4 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000e57h). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, May 21, 2021). M4.4 Earthquake 10 km NNW of P?veh, Iran — May 21, 2021. Retrieved August 9, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000e57h/