M5.1 earthquake 36 km NE of Ger?sh, Iran
A magnitude 5.1 earthquake struck 36 km NE of Ger?sh, Iran on Sat, Dec 22, 1984, 7:35 PM GMT+3:30 (16:05 UTC), 43 km (27 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (Mw, moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-12-22 16:05:12 UTC
- Depth
- 43.2 km (26.8 mi), shallow
- Epicenter
- 27.856° N, 54.439° E
- Region
- Iran
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.1 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.09 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.1 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
Felt in the Lar area. CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 11S, 16C Centroid Location: Origin Time 16:05:14.6 0.9 Lat 27.51N 0.08 Lon 53.68E 0.09 Dep 49.0 8.4 Half-duration 1.4 Moment Tensor; Scale 10**23 D-CM Mrr=5.54 0.43 Mtt=-4.00 0.69 Mff=-1.53 0.71 Mrt=-0.42 0.79 Mrf=0.69 0.92 Mtf=2.03 0.61 Principal Axes: (T) Val=5.61 Plg=85 Azm=255 (N) Val=-0.42 Plg=4 Azm=120 (P) Val=-5.19 Plg=4 Azm=29 Best Double Couple:Mo=5.4*10**23 NP1:Strike=115 Dip=41 Slip=84 NP2:Strike=303 Dip=49 Slip=95
From the USGS event page for usp0002aay. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayIran earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002aay (also filed as gcmtb122284b, gcmt19841222160511, iscgem537194). Read Thu, Oct 1, 2026, 1:34 PM UTC.