M5.1 earthquake 39 km WNW of Marsa Alam, Egypt
A magnitude 5.1 earthquake struck 39 km WNW of Marsa Alam, Egypt on Mon, Jul 2, 1984, 4:46 AM GMT+3 (01:46 UTC), 10 km (6 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
- 1984-07-02 01:46:58 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 25.257° N, 34.565° E
- Region
- Egypt
- 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 |
| 5.07 | 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. CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 11S, 15C Centroid Location: Origin Time 01:47: 9.9 0.8 Lat 25.86N 0.09 Lon 33.85E 0.14 Dep 10.0 FIX Half-duration 1.4 Moment Tensor; Scale 10**23 D-CM Mrr=-4.32 0.38 Mtt=4.23 0.40 Mff=0.09 0.52 Mrt=0.00 1.92 Mrf=0.91 1.29 Mtf=-2.65 0.55 Principal Axes: (T) Val=5.54 Plg=2 Azm=205 (N) Val=-1.00 Plg=14 Azm=296 (P) Val=-4.54 Plg=76 Azm=107 Best Double Couple:Mo=5.0*10**23 NP1:Strike=281 Dip=45 Slip=-110 NP2:Strike=128 Dip=49 Slip=-71
From the USGS event page for usp00025et. 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.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00025et (also filed as gcmtb070284a, gcmt19840702014658, iscgem548108). Read Sun, Oct 4, 2026, 11:53 PM UTC.