Moderate mag. 5.3 earthquake - 74 km west of Bojnourd, North Khorasan, Iran, on Thursday, 2 August 1973 at 19:56 (GMT)
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Moderate magnitude 5.3 earthquake at 36 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 36.0 km
Epicenter latitude / longitude: 37.345°N / 56.505°E (North Khorasan, Iran)
Nearby towns and cities:
74 km (46 mi) W of Bojnourd (pop: 192,000) --> See nearby quakes!
90 km (56 mi) E of Kalāleh (Kalaleh, Golestan) (pop: 33,700) --> See nearby quakes!
94 km (58 mi) WNW of Esfarāyen (pop: 59,700) --> See nearby quakes!
119 km (74 mi) E of Gonbad-e Kāvūs (Golestan) (pop: 131,400) --> See nearby quakes!
122 km (75 mi) ENE of Āzādshahr (Golestan) (pop: 47,600) --> See nearby quakes!
126 km (78 mi) W of Shīrvān (pop: 82,800) --> See nearby quakes!
164 km (102 mi) NW of Sabzevar (Razavi Khorasan) (pop: 226,200) --> See nearby quakes!
179 km (111 mi) WSW of Achgabat (Ashgabat, Turkmenistan) (pop: 727,700) --> See nearby quakes!
300 km (186 mi) WNW of Mashhad (Razavi Khorasan) (pop: 2,307,200) --> See nearby quakes!
490 km (304 mi) ENE of Tehran (Tehrān) (pop: 7,153,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5.6 x 1012 joules (1.56 gigawatt hours, equivalent to 1344 tons of TNT) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
|5.3||36 km||northeastern Iran||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
More infoRecorded aftershocks, latest first (2 quakes):
- 04 Aug 1973 18:12 UTC| M 4.5 |33 km (20.5 mi) depth|22 km (13 mi) distance| USGS | Details
- 02 Aug 1973 20:28 UTC| M 4.8 |34 km (21.1 mi) depth|2 km (1 mi) distance| USGS | Details