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Moderate mag. 4.8 earthquake - 52 km east of Musoma, North Mara, Tanzania, on Thursday, Mar 11, 2021 at 4:47 am (GMT +3)

Moderate mag. 4.8 earthquake - 52 km east of Musoma, North Mara, Tanzania, on Thursday, Mar 11, 2021 at 4:47 am (GMT +3) Moderate mag. 4.8 earthquake - 52 km east of Musoma, North Mara, Tanzania, on Thursday, Mar 11, 2021 at 4:47 am (GMT +3)

Moderate magnitude 4.8 earthquake at 10 km depth

11 Mar 01:54 UTC: First to report: VolcanoDiscovery after 7 minutes.
12 Mar 00:58: Magnitude recalculated from 4.7 to 4.8. Epicenter location corrected by 4.9 km (3.1 mi) towards SSW.
Update Thu, 11 Mar 2021, 02:06

Moderate 4.7 quake hits near Musoma, Musoma Municipal, North Mara, Tanzania

4.7 quake 11 Mar 4:47 am (GMT +3)
4.7 quake 11 Mar 4:47 am (GMT +3)
A shallow magnitude 4.7 earthquake was reported early morning near Musoma, Musoma Municipal, North Mara, Tanzania.
According to the United States Geological Survey, the quake hit on Thursday 11 March 2021 at 4:47 am local time at a shallow depth of 10 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.7 earthquake as well.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Tarime (pop. 33,100) located 20 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Sirari (pop. 24,300) located 36 km from the epicenter, Butiama (pop. 16,400) 45 km away, Musoma (pop. 121,100) 53 km away, and Bunda (pop. 50,900) 76 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 & timeMar 11, 2021 01:47:13 UTC
Local time at epicenterThursday, Mar 11, 2021 at 4:47 am (GMT +3)
StatusConfirmed
Magnitude4.8
Depth10.0 km
Epicenter latitude / longitude1.5514°S / 34.263°E (Butiama District Council, North Mara, Tanzania)
Antipode1.551°N / 145.737°W
Shaking intensityModerate shaking
Felt243 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoHoma Mountain (128 km / 80 mi)
Nearby towns and cities25 km (16 mi) SSW of Tarime (Mara) (pop: 33,100) | Show on map | Quakes nearby
41 km (25 mi) SW of Sirari (Mara) (pop: 24,300) | Show on map | Quakes nearby
41 km (25 mi) NE of Butiama (Mara) (pop: 16,400) | Show on map | Quakes nearby
47 km (29 mi) NE of Nyamuswa (Mara) (pop: 16,500) | Show on map | Quakes nearby
52 km (32 mi) E of Musoma (Mara) (pop: 121,100) | Show on map | Quakes nearby
186 km (115 mi) NE of Mwanza (pop: 436,800) | Show on map | Quakes nearby
279 km (174 mi) SE of Kampala (Central Region, Uganda) (pop: 1,353,200) | Show on map | Quakes nearby
286 km (177 mi) W of Nairobi (Nairobi Area, Kenya) (pop: 2,750,500) | Show on map | Quakes nearby
336 km (209 mi) NW of Arusha (pop: 341,100) | Show on map | Quakes nearby
539 km (335 mi) NNW of Dodoma (pop: 180,500) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 15.9°C (61 F), humidity: 64%, wind: 2 m/s (3 kts) from ESE
Estimated seismic energy released1 x 1012 joules (278 megawatt hours, equivalent to 239 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
4.810 km25 Km SSW of Tarime, TanzaniaUSGS
4.710 kmLK VICTORIA REG., KENYA-TANZANIAEMSC
4.619 kmLake Victoria Region, TanzaniaGFZ

Seismograms

Seismic station: Kilima Mbogo, Kenya (KMBO/IU network) | Distance from quake: 336 km / 209 mi | Show on map | Station Info
Seismic station Kilima Mbogo, Kenya: 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 (257)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Kisii University / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : Was just on and felt my house ceiling shaking and my windows vibrating then suddenly my bed was shaking too I alsmost thought it's the d-day for us to leave the world | 19 users found this interesting.  
  • I felt it in Homabay county-Oyugis town.It occurred at 4:51am for 15 seconds
Migori town near equity bank / Strong shaking (MMI VI) : 4:47 Am | 9 users found this interesting.  
Ranen (83.7 km NNE of epicenter) [Map] / Weak shaking (MMI III) / 20-30 s : It's scary and confusing when you're awakened by the roof rattling, then the house starts shaking. You fear it would get worse but the shake fades off. | 5 users found this interesting.  
Bomet ,siongiroi / Light shaking (MMI IV) / 2-5 s : There was rat in my house, when felt trembling then I though may it is huge mouse escaping its no longer a rat because shaking until my bed I woke and sit I didn't sleep anymore | 2 users found this interesting.  
Selfie (public domain)Selfie (public domain)
Tenwek Hospital (Bomet/Silibwet) / Light shaking (MMI IV) / 15-20 s : We were wakened by the shaking of the bed and a light rumbling sound outside. The shaking lasted for about 7-10 seconds and tapered off for about 10 more. It was the longest and strongest I’ve felt from this location in the past 23 years. | 4 users found this interesting.  
bomet kenya / Very weak shaking (MMI II) / rattling, vibrating / 20-30 s : We've live here for 5 years and first earthquake we've felt. We were up early and my wife and I | 4 users found this interesting.  
Kericho, Kenya (180.5 km NE of epicenter) [Map] / Light shaking (MMI IV) / 15-20 s : Bed was shaking and every | 3 users found this interesting.  
Awendo (41.8 km NNE of epicenter) [Map] / Moderate shaking (MMI V) : Scaaary, I thought the world was ending. It's not every night you wake up to the house shaking, cupboards sliding and a lot of noise | 3 users found this interesting.  
Kisii (111.9 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 20-30 s : Kenyans wake up in fear as the land is hit by an earthquake. The m | 3 users found this interesting.  
taboino / Weak shaking (MMI III) / 20-30 s : I felt it while asleep on bed but was awaken by the shaking. it was at 4:50 AM east African time and didn't last long though it's my first that lasted for long. | 3 users found this interesting.  
Kisii, Kenya (115.2 km NNE of epicenter) [Map] / Moderate shaking (MMI V) / 5-10 s : It is what woke me up. I was shocked that I almost ran outside. I thought the end of the world has come. Here in Kisii Kenya at Gusii Highlights | 2 users found this interesting.  
APLine migori.opposite Red Cross / Strong shaking (MMI VI) / 20-30 s : Animals alarmed .Difficulty experienced in walking steadily. | 4 users found this interesting.  
Migori, Kenya / Moderate shaking (MMI V) / rattling, vibrating / 5-10 s : woken up by shake | 4 users found this interesting.  
NDANAI - SOTIK (121.7 km NE of epicenter) [Map] / Very strong shaking (MMI VII) : My clothes on the floor bed shaking | 3 users found this interesting.  
Migori county / Light shaking (MMI IV) / 5-10 s : At first it felt like a heavy vehicle was passing since we are near the highway, after a few seconds windows were vibrating, objects on the table moving and the ground shook slightly. | 2 users found this interesting.  
Kericho / Light shaking (MMI IV) / 1-2 s : You should have seen me waking up my 2 babies (4 years and 5 months olds) thinking that the house was collapsing while we were still sleeping in it. | 2 users found this interesting.  
Rongo, Kisii County (96.3 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 10-15 s : Woke up with the bed shaking,also hearing some noise, mostly from things rattling or moving slightly. | One user found this interesting.  
Kenya Kisii County Bogiakumu Location (111.3 km NNE of epicenter) [Map] / Strong shaking (MMI VI) : I was woken up to a serious tremor never had of it before. I heard like a huge wide Rock was moving with speed underneath the soil. It took around 12seconds...Am yet to ascertain the full damaged it may have caused in my region.moturimoturigo@gmail.com | One user found this interesting.  
Nyamongo - Tarime / Strong shaking (MMI VI) : House was shaking, the car alarms were sounding as the result of quake. Strong shaking was then followed by two after shocks in a range of appro.15minutes from the major shock. | 3 users found this interesting.  
Lolgorien Kenya / Strong shaking (MMI VI) / rattling, vibrating / 10-15 s : The whole house was shaking as if it was being pushed by the bulldozer and difficulty in walking . | 3 users found this interesting.  
Iganga, Uganda / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : Woke me up from sleep | 3 users found this interesting.  
Ukwala, siaya county / Light shaking (MMI IV) / vibration and rolling : I felt like swinging in bed | 3 users found this interesting.  
Kericho / Strong shaking (MMI VI) : Shocking and terrible | 3 users found this interesting.  
I work in West pokot county and I felt earthquake / Light shaking (MMI IV) : I livebin West pokot county and I felt earthquake at 0452am | 3 users found this interesting.  
Eldoret (255.4 km NNE of epicenter) [Map] / Weak shaking (MMI III) / 5-10 s : Apartment building shaking.Rattling of bottles near my bedroom mirror. A bit scary. | 2 users found this interesting.  
Kiptagich, Olenguruone (512 km NE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : Windows rattle, swaying clothe line inside the house. | 2 users found this interesting.  
Kisii town (112.5 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 10-15 s : Woken up by strong shaking and sounds of rattling sounds from the roof | 2 users found this interesting.  
Bomet, Makimeny / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : I was awake,everything was vibrating i thou there was someone pushing the door. Dogs were barking ,and hens were making noise. | One user found this interesting.  
Kisii, Sengera / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : I was asleep at that time when i heard my bed shaking. I woke up and felt the vibrations from the ground. | One user found this interesting.  
Migori / Light shaking (MMI IV) / simple rolling (tilting sideways along one direction) / 10-15 s : The quake started off mild then a slightly strong shaking before it finally died out...it lasted not more than 30 seconds | One user found this interesting.  
Kisii Town / Strong shaking (MMI VI) / rattling, vibrating / 2-5 s : was around 4:48 EAT during the quake.... I was asleep and never got back to bed again.... it was horrible. | One user found this interesting.  
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