Moderate mag. 5.1 earthquake - 9.1 km east of Esfarāyen, North Khorasan, Iran, on Friday, 10 April 1987 at 06:43 (GMT)
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Moderate magnitude 5.1 earthquake at 46 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 46.4 km
Epicenter latitude / longitude: 37.093°N / 57.61°E (North Khorasan, Iran)
Nearby towns and cities:
9 km (6 mi) ENE of Esfarāyen (pop: 59,700) --> See nearby quakes!
44 km (27 mi) SW of Shīrvān (pop: 82,800) --> See nearby quakes!
49 km (31 mi) SSE of Bojnourd (pop: 192,000) --> See nearby quakes!
80 km (50 mi) W of Qūchān (Razavi Khorasan) (pop: 111,800) --> See nearby quakes!
98 km (61 mi) N of Sabzevar (Razavi Khorasan) (pop: 226,200) --> See nearby quakes!
117 km (73 mi) SW of Achgabat (Ashgabat, Turkmenistan) (pop: 727,700) --> See nearby quakes!
143 km (89 mi) WNW of Chenārān (Razavi Khorasan) (pop: 46,900) --> See nearby quakes!
144 km (90 mi) NW of Neyshabur (Razavi Khorasan) (pop: 220,900) --> See nearby quakes!
199 km (123 mi) WNW of Mashhad (Razavi Khorasan) (pop: 2,307,200) --> See nearby quakes!
575 km (358 mi) ENE of Tehran (Tehrān) (pop: 7,153,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 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.
|5.1||46 km||Turkmenistan-Iran border region||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 (1 quakes):
- 06 May 1987 11:28 UTC| M 4.5 |33 km (20.5 mi) depth|12 km (8 mi) distance| USGS | Details