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Moderate mag. 4.9 earthquake - Alboran Sea, 26 km east of Al Hoceima, Morocco, on Tuesday, Oct 4, 2022 at 4:39 pm (GMT +1) -

Moderate mag. 4.9 earthquake - Alboran Sea, 26 km east of Al Hoceima, Morocco, on Tuesday, Oct 4, 2022 at 4:39 pm (GMT +1) Moderate mag. 4.9 earthquake - Alboran Sea, 26 km east of Al Hoceima, Morocco, on Tuesday, Oct 4, 2022 at 4:39 pm (GMT +1)

Moderate magnitude 4.9 earthquake at 10 km depth

4 Oct 15:42 UTC: First to report: EMSC after 3 minutes.
4 Oct 15:43: Magnitude recalculated from 5.2 to 4.6. Hypocenter depth recalculated from 28.0 to 36.0 km (from 17.4 to 22 mi). Epicenter location corrected by 13 km (8.3 mi) towards NW.
... [show all] ...
10 Oct 19:08: Epicenter location corrected by 2.6 km (1.6 mi) towards ESE.
Update Tue, 4 Oct 2022, 16:00

Moderate magnitude 4.5 earthquake 40 km northeast of Al Hoceima, Morocco

4.5 quake 4 Oct 4:39 pm (GMT +1)
4.5 quake 4 Oct 4:39 pm (GMT +1)
A magnitude 4.5 earthquake near Al Hoceima, Al-Hoceima, Tanger-Tetouan-Al Hoceima, Morocco, was reported only 21 minutes ago by the European-Mediterranean Seismological Centre (EMSC), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at a shallow depth of 10 km beneath the epicenter in the afternoon on Tuesday, October 4th, 2022, at 4:39 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the Portuguese Institute for Sea and Atmosphere (Instituto Português do Mar e da Atmosfera, IPMA) which listed the quake at magnitude 4.1. Other agencies reporting the same quake include the citizen-seismograph network of RaspberryShake at magnitude 4.4, the German Research Centre for Geosciences (GFZ) at magnitude 4.4, and Spain's Instituto Geográfico Nacional (IGN) at magnitude 4.3.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Al Hoceima (pop. 395,600) located 40 km from the epicenter, Tirhanimîne (pop. 55,800) 42 km away, Imzouren (pop. 40,000) 43 km away, and Bni Bouayach (pop. 18,300) 47 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Nador (pop. 129,300) located 68 km from the epicenter, and Al Aaroui (pop. 36,000) 73 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Earthquake details

Date & timeOct 4, 2022 15:39:29 UTC -
Local time at epicenterTuesday, Oct 4, 2022 at 4:39 pm (GMT +1)
StatusConfirmed
Magnitude4.9
Depth10.0 km
Epicenter latitude / longitude35.2919°N / 3.6514°W (Alboran Sea, Morocco)
Antipode35.292°S / 176.349°E
Shaking intensityLight shaking
Felt26 reports
Primary data sourceUSGS (United States Geological Survey)
Nearby towns and cities24 km (15 mi) NE of Imzouren (pop: 40,000) | Show on map | Quakes nearby
26 km (16 mi) E of Al Hoceima (pop: 395,600) | Show on map | Quakes nearby
27 km (17 mi) NE of Bni Bouayach (Province de Al Hoceïma) (pop: 18,300) | Show on map | Quakes nearby
28 km (18 mi) ENE of Tirhanimîne (pop: 55,800) | Show on map | Quakes nearby
67 km (41 mi) WNW of Nador (pop: 129,300) | Show on map | Quakes nearby
181 km (112 mi) ESE of Gibraltar (Gibraltar) (pop: 26,500) | Show on map | Quakes nearby
187 km (116 mi) NE of Fes (pop: 964,900) | Show on map | Quakes nearby
324 km (201 mi) ENE of Rabat (pop: 1,655,800) | Show on map | Quakes nearby
Weather at epicenter at time of quakeFew Clouds 25.1°C (77 F), humidity: 57%, wind: 1 m/s (1 kts) from E
Estimated seismic energy released1.4 x 1012 joules (392 megawatt hours, equivalent to 338 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
4.910 km24 Km NE of Imzouren, MoroccoUSGS
4.711 kmMorocco: ALBORIGN
4.810 kmMorocco: Strait of GibraltarGFZ
4.910 kmMorocco: Strait of GibraltarRaspberryShake
4.10 kmMorocco: NE Al Hoceima (MARR)IPMA
4.578 kmSpain [Sea]INGV
4.510 kmMorocco: STRAIT OF GIBRALTAREMSC
4.910 kmMorocco: Strait Of GibraltarIRIS

Seismograms

Seismic station: San Pablo, Spain (PAB/IU network) | Distance from quake: 477 km / 296 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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Torroc (162.2 km N of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Tumbada en la cama, como si diesen un golpe de cerrar la puerta pot corriente de aire, pero lo que se vibró fue la cama.  
Al Hoceima (4.6 km NW of epicenter) [Map] / not felt / vibration and rolling / 10-15 s
Midar, Nador, Oriental (38.4 km SSE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / very short : driouch  
Málaga (176.6 km NNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Torrox Costa (162.3 km N of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s : Sitting on 3rd floor balcony. Other half felt it inside sitting on the couch  
Al Aaroui, Oriental (72.1 km ESE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
Malaga, Andalucía (175.6 km NNW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s
NADOR (65.5 km E of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Allongé sur le lit j'ai senti une vibration  
Nador, Oriental (66.7 km E of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Melilla (64.3 km E of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s
Melilla spain (62.3 km E of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s
Midar / Light shaking (MMI IV)
Imzouren / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s : 5 seconds vibrating walls in my room as I was sat my back to wall  
Al hoceima marokko / Weak shaking (MMI III) / 2-5 s : Licht schudden  
imzouren / Weak shaking (MMI III) / rattling, vibrating
Melilla / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Melilla / Light shaking (MMI IV)
Torre dem mar / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : Horizontalbewegung leicht  
imzouren / Weak shaking (MMI III) / single vertical bump / 2-5 s
Nerja Malaga Spain / Very weak shaking (MMI II) / single lateral shake / very short : Mild 2 second shake left to right on 5th floor balcony. (reported through our app)  
Torre del mar / Weak shaking (MMI III) / single lateral shake / 2-5 s
Port nador west med / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Driouch / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
Targuist / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s
Tamssaman / Moderate shaking (MMI V) / rattling, vibrating
ajdir / Light shaking (MMI IV) (reported through our app)
Nador / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
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