M5.7 earthquake 60 km NNE of Sarupathar, India
A magnitude 5.7 earthquake struck 60 km NNE of Sarupathar, India on Wed, Nov 28, 1984, 4:59 PM GMT+6:30 (10:29 UTC), 18 km (11 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.7 (Mw, moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-11-28 10:29:21 UTC
- Depth
- 17.7 km (11.0 mi), shallow
- Epicenter
- 26.697° N, 97.085° E
- Region
- India
- Strongest shaking
- VI, strong shaking
- 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 |
|---|---|---|---|
| 5.7 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.66 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.7 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
FAULT PLANE SOLUTION: P-Waves NP1:Strike=233 Dip=73 Slip=125 NP2:Strike=346 Dip=38 Slip=28 Principal Axes: (T) Plg=50 Azm=182 (P) Plg=20 Azm=297 Comment: The focal mechanism is poorly controlled and corresponds to reverse faulting with a moderate strike-slip component. The preferred fault plane is not determined. MOMENT TENSOR SOLUTION Dep 27 No. of sta: 9 Moment Tensor; Scale 10**24 d-cm Mrr=1.16 Mtt=-2.07 Mff=0.91 Mrt=-1.92 Mrf=-1.24 Mtf=0.86 Principal axes: (T) Val=3.07 Plg=47 Azm=123 (N) Val=-0.09 Plg=33 Azm=258 (P) Val=-2.98 Plg=24 Azm=5 Best Double Couple:Mo=3.0*10**24 NP1:Strike=140 Dip=36 Slip=156 NP2:Strike=249 Dip=76 Slip=56 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 11S, 22C Centroid Location: Origin Time 10:29:28.9 0.3 Lat 26.67N 0.05 Lon 96.81E 0.04 Dep 49.3 4.2 Half-duration 2.6 Moment Tensor; Scale 10**24 D-CM Mrr=0.81 0.11 Mtt=2.12 0.14 Mff=-2.93 0.17 Mrt=-2.13 0.16 Mrf=-1.09 0.14 Mtf=1.03 0.13 Principal Axes: (T) Val=4.01 Plg=36 Azm=165 (N) Val=-0.74 Plg=51 Azm=9 (P) Val=-3.27 Plg=12 Azm=264 Best Double Couple:Mo=3.6*10**24 NP1:Strike=311 Dip=56 Slip=19 NP2:Strike=210 Dip=74 Slip=144
From the USGS event page for usp00029jb. U.S. Geological Survey text and figures are in the public domain.
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VI, strong shaking
- Peak ground acceleration
- 19.9% of gravity
- Peak ground velocity
- 2.6 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.7 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayIndia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00029jb (also filed as gcmtb112884b, gcmt19841128102926, atlas19841128102921, iscgem540119). Read Fri, Oct 2, 2026, 9:26 AM UTC.