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Moderate mag. 4.3 earthquake - Alboran Sea, 36 km northeast of Al Hoceima, Morocco, on 30 Jul 9:38 am (GMT +1) -

Moderate mag. 4.3 earthquake - Alboran Sea, 36 km northeast of Al Hoceima, Morocco, on 30 Jul 9:38 am (GMT +1) Moderate mag. 4.3 earthquake - Alboran Sea, 36 km northeast of Al Hoceima, Morocco, on 30 Jul 9:38 am (GMT +1)

Moderate magnitude 4.3 earthquake at 4 km depth

30 Jul 08:42 UTC: First to report: IGN after 3 minutes.
30 Jul 08:59: Magnitude recalculated from 3.6 to 3.9. Hypocenter depth recalculated from 5.0 to 4.0 km (from 3.1 to 2.5 mi). Epicenter location corrected by 6.6 km (4.1 mi) towards S.
30 Jul 17:05: Magnitude recalculated from 3.9 to 4.3.

Earthquake details

Date & timeJul 30, 2021 08:38:53 UTC -
Local time at epicenter30 Jul 9:38 am (GMT +1)
StatusConfirmed
Magnitude4.3
Depth4.0 km
Epicenter latitude / longitude35.4474°N / 3.6204°W (Alboran Sea, Morocco)
Antipode35.447°S / 176.38°E
Shaking intensityWeak shaking
Felt27 reports
Primary data sourceIGN (Instituto Geográfico Nacional)
Nearby towns and cities36 km (22 mi) NE of Al Hoceima (pop: 395,600) | Show on map | Quakes nearby
38 km (24 mi) NE of Tirhanimîne (pop: 55,800) | Show on map | Quakes nearby
39 km (25 mi) NNE of Imzouren (pop: 40,000) | Show on map | Quakes nearby
43 km (27 mi) NNE of Bni Bouayach (Province de Al Hoceïma) (pop: 18,300) | Show on map | Quakes nearby
70 km (43 mi) WNW of Nador (pop: 129,300) | Show on map | Quakes nearby
74 km (46 mi) NW of Al Aaroui (Nador Province) (pop: 36,000) | Show on map | Quakes nearby
98 km (61 mi) NW of Zaïo (Province de Nador) (pop: 30,000) | Show on map | Quakes nearby
174 km (108 mi) ESE of Gibraltar (Gibraltar) (pop: 26,500) | Show on map | Quakes nearby
202 km (125 mi) NE of Fes (pop: 964,900) | Show on map | Quakes nearby
334 km (208 mi) ENE of Rabat (pop: 1,655,800) | Show on map | Quakes nearby
Estimated seismic energy released1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) | about seismic energy
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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.
Mag.DepthLocationSource
4.34 kmMorocco: ALBORIGN
4.010 kmMorocco: STRAIT OF GIBRALTAREMSC
4.110 kmMorocco: Strait of GibraltarGFZ

Seismograms

Seismic station: San Pablo, Spain (PAB/IU network) | Distance from quake: 460 km / 286 mi | Show on map | Station Info
Seismic station San Pablo, Spain: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (27)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Selouane (601.9 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging : Bed moved while lying down on it | 3 users found this interesting.  
Tafersite / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : I felt the ground moving and the house shaking for couple seconds from left to right | One user found this interesting.  
Nador, segangegang (65.3 km ESE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
Al Hoceima (36.9 km SW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Midar, Nador, Oriental (57.4 km S of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : Gjkhgggghhhh  
Nador, segangegang (65.3 km ESE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
Al Hoceima (35.9 km SW of epicenter) [Map] / Weak shaking (MMI III) / 15-20 s (reported through our app)
Trara (57.9 km ESE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Melilla (63.8 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 1-2 s
Melilla (64.2 km ESE of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 5-10 s
Melilla (63 km ESE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s (reported through our app)
Melilla (65 km ESE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Temblor  
Imzouren / Weak shaking (MMI III) / 1-2 s
Al hoceiimq / Very weak shaking (MMI II) / 2-5 s
Al hoceima / Light shaking (MMI IV) / 2-5 s
Nador / Weak shaking (MMI III) / rattling, vibrating / 10-15 s
Driouch / Moderate shaking (MMI V) / rattling, vibrating / 1-2 s
Ben tieb nador / Light shaking (MMI IV) / vibration and rolling / 2-5 s : Oui mon lit et mes portes on bouge  
Nador / Weak shaking (MMI III) / single lateral shake / very short
Saidia / Light shaking (MMI IV) / single vertical bump / 1-2 s : 3  
Ijeti / Very weak shaking (MMI II) / single lateral shake / 2-5 s
Nador / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Beni Bouayach / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : I felt the ground vibrating  
Melilla / Weak shaking (MMI III) / single lateral shake / 1-2 s : not sure  
Melilla / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
Melilla / Weak shaking (MMI III) / single lateral shake / 5-10 s
Bni Ansar / Light shaking (MMI IV) / single lateral shake / 2-5 s : dizziness :( :(  
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