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Strong mag. 6.3 earthquake - Near East Coast of Honshu, Japan on Sunday, 4 August 2019 - information

Strong mag. 6.3 earthquake - Near East Coast of Honshu, Japan on Sunday, 4 August 2019

Strong mag. 6.3 earthquake  - Near East Coast of Honshu, Japan on Sunday, 4 August 2019
4 Aug 10:30 UTC: First to report: GFZ after 8 minutes.
Aug 4 10:33: Magnitude recalculated from 6.1 to 6.2.
Hypocenter depth recalculated from 76.0 to 59.0 km.
Aug 5 07:00: Magnitude recalculated from 6.2 to 6.3.
Hypocenter depth recalculated from 59.0 to 49.0 km.
Date & time: Sunday, 4 August 2019 10:23 UTC
Magnitude: 6.3
Depth: 49.0 km
Epicenter latitude / longitude: 37.72°N / 141.52°E (Japan)
Nearest volcano: Zao (111 km / 69 mi)
Nearby towns and cities:
53 km (33 mi) NE of Namie (pop: 21,900)
68 km (42 mi) SE of Watari (pop: 36,300)
70 km (43 mi) SE of Marumori (pop: 16,800)
84 km (52 mi) SE of Sendai (pop: 1,063,100)
194 km (120 mi) NE of Utsunomiya (pop: 449,900)
279 km (173 mi) NE of Tokyo (pop: 8,336,600)
Primary data source: GFZ
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Sun, 4 Aug 10:23 UTCM 6.3 / 49 kmNear East Coast of Honshu, JapanGFZ
Sun, 4 Aug 10:23 UTCM 6.4 / 60 kmNear East Coast Of Honshu, JapanEMSC
Sun, 4 Aug 10:23 UTCM 6.3 / 51.2 kmNear East Coast of Honshu, JapanGeoAu
Sun, 4 Aug 10:23 UTCM 6.3 / 19.5 kmNear east coast of eastern Honshu, Japan [Sea: Japan]INGV
2019-08-04 19:23:03 +09:00 (4 Aug 10:23:03 UTC)M 6.3 / 38.6 km54km ENE of Namie, JapanUSGS
2019-08-04 18:23:03 (4 Aug 10:23:03 UTC)M 6.2 / 40 km日本本州东岸近海 (Japan)CEIC
Sun, 4 Aug 10:23 UTCM 6.4 / 10 kmNear Nouth Coast of Honshu,JapanIMD
Sun, 4 Aug 10:23 UTCM 6.4 / 10 kmNear East Coast of Honshu, JapanBMKG

User reports for this quake (129)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
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Tokyo, Shinjuku / Weak shaking (MMI III)
Tokyo / Light shaking (MMI IV) : Lights and drinks shaking
Tokyo/golden gai / Weak shaking (MMI III) : Tokyo: we were eating in a small bar near Golden Gai. The table and lights shaked during ~10 sec.
Nikko / Light shaking (MMI IV)
Tokyo (271.2 km SW of epicenter) [Map] / not felt (reported through our app)
Ibaraki-ken, Mito-shi, Migawa / Strong shaking (MMI VI)
Shinjuku / Weak shaking (MMI III)
Seishincho / Moderate shaking (MMI V)
Narita (241.4 km SSW of epicenter) [Map] / Moderate shaking (MMI V)
Shinagawa / Weak shaking (MMI III)
Fussa shi US air base / Very weak shaking (MMI II) : Watching tv with husband and felt the vibrations on the third floor . I thought it was him moving and he thought it was me . It felt like someone anxiously tapping their foot and moving the couch. Very light. Coffee in a mug on our coffee table did not wiggle at all. I guess I just must be sensitive to it?
Tokyo (269.5 km SW of epicenter) [Map] / Very weak shaking (MMI II) : 5th floor of hotel. Door rattled,window squeaked, and gentle swaying felt.
Yokohana, / Light shaking (MMI IV) : I was lying on my bed and it was very weak but pretty long
Moreno Valley I hear a rumble echoe sounds.. like / Weak shaking (MMI III) : I heard that rumble sound and like something passing.. I'm not sure if it was just outside or what because I was in side..
Russia. Sankt-Peterburg.not felt. / not felt : Не почувствовал и не ощущал, находился в доме, обедал, всё тихо и спокойно, люстры и связка ключей в норме. Пожалуйста оставайтесь в безопасности, берегите Себя, своих родных и близких. Да, геологиярулит.))),!!!
Tamachi / Light shaking (MMI IV) : it was slow and light at first, but gradually became moderate, lights and hanging things started swaying, and for longer period. My child got scared.
guerneville, CA / not felt : It only woke me up
Tokyo, Shinjuku / Light shaking (MMI IV)
Shinjuku, daikyo-cho / Moderate shaking (MMI V)
Shibuya (280.4 km SW of epicenter) [Map] / Light shaking (MMI IV) : We are visiting, I grew in Coronado, California and knew immediately we were having an earthquake - it went right into it - our hotel room is on the 6th floor on the higher part of the Shibuya hill - about 200 Meters from the Tv studio here. It was a wavy sodeways sort similar to the type we have in Southern California. I am not aware of what foundation this hotel has but it is newish, took the movement well. Did not notice any aftershocks
Hirstsuka / Light shaking (MMI IV)
Tokio Ueno / Light shaking (MMI IV)
San Diego / Very weak shaking (MMI II) : Quick shaking. Woke me up. Dog barked briefly.
Sendai / Moderate shaking (MMI V)
Higashikurume / Light shaking (MMI IV)
Kawasaki / Weak shaking (MMI III)
Ayase city, Kanagawa / Light shaking (MMI IV)
Yokosuka / Weak shaking (MMI III) : About 3 waves of swaying. Ground floor.
Chou-ku / Light shaking (MMI IV) : I’m on the 18th floor in a apartment located in Chou-ku Tokyo. There was a big jolt then the shaking continued for 30-45 seconds.
Tamura / Moderate shaking (MMI V) : It was fairly strong. A few items in my apartment fell over.
274.3 km SW of epicenter [Map] / Light shaking (MMI IV)
Ayase Kanagawa / Weak shaking (MMI III)
280.2 km SW of epicenter [Map] / Light shaking (MMI IV)
Kumagawa, tokyo / Very weak shaking (MMI II) : Felt very mild shaking.
Setagaya-ku / Weak shaking (MMI III)
Yokohama, Kanagawa, Japan. (301.7 km SW of epicenter) [Map] / Moderate shaking (MMI V) : I felt the shaking, it was not so strong. But quite long, it lasted about 8 seconds. (reported through our app)
Ginza, Tokyo, Japan / Light shaking (MMI IV)
Iwaki city / Light shaking (MMI IV)
Narita / Moderate shaking (MMI V)
242.8 km SSW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
Meguro / Light shaking (MMI IV)
278.4 km SW of epicenter [Map] / not felt (reported through our app)
Akihabara / Light shaking (MMI IV) : Awoke to light shaking on 10th floor Akihabara Washington Hotel.
Okura Academia Park Hotel / Very weak shaking (MMI II) : On 4th floor of hotel room, Lying on springbed. It started to bounce lightly. Lampstand next to bed was wobbly. Slight rattling of glass windows.
Shinjuku / Light shaking (MMI IV)
Tokyo / Moderate shaking (MMI V)
Sagamihara-shi, Kanagawa-ken, / Weak shaking (MMI III)
Tokyo / Light shaking (MMI IV) : Scary,I was at a 8th floor so it was ugly but nothing happened
Urawa (268.7 km SW of epicenter) [Map] / Light shaking (MMI IV) : My apartment is on the 4th floor so I felt the wiggle
Tama-ku, Kawasaki shi / Weak shaking (MMI III)
Ota-City/Präfectur Gumma/Hotel 5th floor (251.1 km SW of epicenter) [Map] / Weak shaking (MMI III) : Interesting experience. Not usual in Europe.
Shimoda / not felt : Nothing
Tokio / Weak shaking (MMI III)
Japan / Weak shaking (MMI III)
Soma-shi Fukushima / Strong shaking (MMI VI) : Very scary
Hotel Mystays, Higashi Ikebukuro, Tokyo / Moderate shaking (MMI V) : Bed was shaking, me and my best friend felt it we both thought the other was shaking the bed but my friend stood up and realised that the floor was shaking too... after we also both realised that neither of us couldve shook the bed that hard...
Tokyo, Minato / Moderate shaking (MMI V)
Tokyo / Light shaking (MMI IV)
Asakusa / Moderate shaking (MMI V)
Setagaya Tokyo Japan / Weak shaking (MMI III) : The alarm of the earthquake early warning sounded, and it shook in small steps for about 10 seconds after about 15 seconds
Shibuya tokyo / Light shaking (MMI IV)
harajuku / Moderate shaking (MMI V)
Tokyo Prince Hotel / Weak shaking (MMI III) : Lying down in bed. Shaking of bed for 10 or so seconds. Hangars in closet were moving.
Yokohama, bandobashi / Light shaking (MMI IV)
TOKYO / Light shaking (MMI IV)
Matsushima, / Moderate shaking (MMI V) : Our 3rd quake, 2nd in Japan, all 3 in hotels... more horizontal vibrations than vertical ones. Apparently no tsunami risks on this location. 38-22’38.02”N 141-04’10.34”E
335 km N of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
Shinjuku / Light shaking (MMI IV)
Itabashi-Ku / Light shaking (MMI IV) : On my bed, playing computers, first in Japan since 2 weeks, first I thought it was a truck passing accros the street then after 4 seconds I was like « hey you are in Japan, it s not a truck, it s an earthquake ! », after 5 more seconds intensity went down then over.
Machida, apa hotel, 3 floor / Light shaking (MMI IV)
Hitachiomiya / Moderate shaking (MMI V) : Maybe a minute of movement.
Tokyo / Moderate shaking (MMI V)
Chiba, Japan / Moderate shaking (MMI V)
Kibara Sammu (254.5 km SSW of epicenter) [Map] / Strong shaking (MMI VI) : Lasted 15 seconds,but had to hold on to television,as noticeable movement through house. (reported through our app)
Tsukuba (222.6 km SW of epicenter) [Map] / Moderate shaking (MMI V)
653.4 km WSW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
280.6 km SW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Hitachinaka / Moderate shaking (MMI V) : Seemed to last about half a minute.
312.1 km SW of epicenter [Map] / Light shaking (MMI IV) : Not strong but longer than usual, the shaking lasted for more than 20 seconds.
Kawagoe-Shi, saitama / Light shaking (MMI IV)
Hitachiomiya / Moderate shaking (MMI V) : Cool
yokohama (309.3 km SW of epicenter) [Map] / Weak shaking (MMI III) : I felt small vibration about 30sec. (reported through our app)
346.8 km SW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Tokio, Denechofu / Light shaking (MMI IV) : quite long might 30 seconds
Zama, Japan (311.2 km SW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
314.7 km SSW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Tokyo (270.7 km SW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
3060.7 km WSW of epicenter [Map] / not felt
312.2 km SSW of epicenter [Map] / Light shaking (MMI IV)
89.4 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
249.6 km SW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
292.2 km SW of epicenter [Map] / Light shaking (MMI IV) : 震度3 (reported through our app)
274.1 km SW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
(Japan, 340 km NW of epicenter) : I felt a very slight shake of it. My wife and daughter felt nothing. (reported through EMSC)
(Japan, 331 km SW of epicenter) : Mild shaking and swaying for about 10-15 seconds (reported through EMSC)
(Japan, 324 km SW of epicenter) : Lasted over 15 seconds (reported through EMSC)
Naka (Japan, 313 km SW of epicenter) : I feel the shake in Yokohama, Kanagawa (reported through EMSC)
(Japan, 313 km SW of epicenter) : two or three 30 second waves of swaying (reported through EMSC)
(Japan, 313 km SW of epicenter) : Felt strong (reported through EMSC)
Aoba (Japan, 310 km SW of epicenter) : Long shaking for 10 more sec @Aoba-dai in Yokohama... (reported through EMSC)
(Japan, 308 km SW of epicenter) : Minor shaking that made glasses tinkle and the lights move. Lasted for almost a minute. (reported through EMSC)
Kohoku (Japan, 307 km SW of epicenter) : Very long and in different directions (reported through EMSC)
(Japan, 297 km SW of epicenter) : I felt the shake not so big. But the swing was a bit bigger. (reported through EMSC)
(Japan, 296 km SW of epicenter) : About 50 seconds of rolling in tokyo (reported through EMSC)
(Japan, 292 km SW of epicenter) : Temblor sentí en Tokorozawa Shi Japón 19:23pm Domingo 4 de Agosto (reported through EMSC)
(Japan, 290 km SW of epicenter) : Luckily, I didn’t feel anything. (reported through EMSC)
(Japan, 290 km SW of epicenter) : Shaking lady more than 10 seconds (reported through EMSC)
(Japan, 290 km SW of epicenter) : Mild for about 20 seconds (reported through EMSC)
(Japan, 289 km SW of epicenter) : Moto Azabu felt things move and quite long (reported through EMSC)
(Japan, 289 km SW of epicenter) : Longest earthquake I’ve felt in 2.5 years lived in Tokyo, around 40 seconds or so. Got 40 seconds alert prior to shaking via early warning system. (reported through EMSC)
Tokyo (Japan, 288 km SW of epicenter) : Haneda airport international terminalLight but firm swaying, signs swaying significantly, I was standing and swaying, a few other people in the airport noticed too. (reported through EMSC)
Tokyo (Japan, 288 km SW of epicenter) : Everything in room was shaking, no damage (reported through EMSC)
Tokyo (Japan, 288 km SW of epicenter) : I was lying on the bed when I felt the shaking, I noticed hanging objects swinging. Felt it for the first time in my life, so quite an experience (reported through EMSC)
Tokyo (Japan, 288 km SW of epicenter) : La cama se movía, me paré para comprobar si estaba temblando, y duró bastante, se sintió durante un minuto aproximadamente (reported through EMSC)
(Japan, 288 km SW of epicenter) : It moves well, also the lights (reported through EMSC)
(Japan, 288 km SW of epicenter) : Petit tremblement à Tokyo (point de départ près de fukushima) (reported through EMSC)
(Japan, 287 km SW of epicenter) : Durée 30s oscillation du linge suspendu. (reported through EMSC)
(Japan, 283 km SW of epicenter) : In ojima everything in house, mirrors , was shaking for more than one minute (reported through EMSC)
(Japan, 282 km SW of epicenter) : In Tokyo - minor shaking... (reported through EMSC)
(Japan, 280 km SW of epicenter) : Strong vibrations, floor shaked for around 20 sec. ( Kita-Ku, Tokyo) (reported through EMSC)
(Japan, 278 km SW of epicenter) : Walls and water inside bottle shook for a few minutes. No damage, no moving objects. (reported through EMSC)
Chuo (Japan, 276 km SW of epicenter) : The building didn't shake at a level where it made a noise (reported through EMSC)
(Japan, 275 km SW of epicenter) : It started slowly and I heard the house creak and felt dizzy before I realized it was an earthquake. Then I paid attention to the motion. It rolled for maybe 30 seconds and the room open doors trembled. (reported through EMSC)
(Japan, 274 km SW of epicenter) : A quick quake near katsushika-ku! (reported through EMSC)
(Japan, 254 km SW of epicenter) : In Kozunomori 10/15 seconds....shaking (reported through EMSC)
(Japan, 236 km SW of epicenter) : big shakes for minute. (reported through EMSC)
(Japan, 200 km SW of epicenter) : Longer than usual (reported through EMSC)
(Japan, 97 km W of epicenter) : I felt strong and long shake for 20 to 30 seconds. No damage so far. (reported through EMSC)
(Japan, 77 km NW of epicenter) : Just walked outside a store, when my phone started to give out a warning, a second after that, the shaking began. It was quite big in my opinion, the biggest one I've been in yet, though it only took around 15-20 seconds. (reported through EMSC)

Aftershocks of the 6.3 quake: Near East Coast of Honshu, Japan, 4 Aug 2019 10:23

More info
Recorded aftershocks, latest first (17 quakes):
  • 24 Jan 2020 03:44 UTC
    | M 4.6 |
    30 km (18.6 mi) depth
    |
    69 km (43 mi) distance
    | EMSC | Details
  • 22 Jan 2020 10:38 UTC
    | M 4.1 |
    50 km (31.1 mi) depth
    |
    81 km (50 mi) distance
    | EMSC | Details
  • 15 Jan 2020 10:50 UTC
    | M 3.7 |
    40 km (24.9 mi) depth
    |
    34 km (21 mi) distance
    | EMSC | Details
  • 08 Jan 2020 15:25 UTC
    | M 4.5 |
    35 km (21.7 mi) depth
    |
    72 km (45 mi) distance
    | USGS | Details
  • 08 Jan 2020 02:57 UTC
    | M 4.9 |
    20 km (12.4 mi) depth
    |
    73 km (45 mi) distance
    | EMSC | Details
  • 28 Dec 2019 12:24 UTC
    | M 4.4 |
    49 km (30.4 mi) depth
    |
    37 km (23 mi) distance
    | EMSC | Details
  • 17 Dec 2019 15:16 UTC
    | M 3.8 |
    90 km (55.9 mi) depth
    |
    78 km (49 mi) distance
    | EMSC | Details
  • 11 Dec 2019 09:39 UTC
    | M 5.2 |
    45 km (28 mi) depth
    |
    31 km (19 mi) distance
    | GFZ | Details
  • 07 Dec 2019 22:14 UTC
    | M 3.8 |
    50 km (31.1 mi) depth
    |
    18 km (11 mi) distance
    | EMSC | Details
  • 07 Dec 2019 03:33 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    24 km (15 mi) distance
    | EMSC | Details
  • 06 Nov 2019 13:16 UTC
    | M 4.8 |
    47 km (29.2 mi) depth
    |
    85 km (53 mi) distance
    | GFZ | Details
  • 03 Nov 2019 05:02 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    55 km (34 mi) distance
    | GFZ | Details
  • 06 Oct 2019 06:03 UTC
    | M 4.6 |
    34.9 km (21.7 mi) depth
    |
    57 km (35 mi) distance
    | USGS | Details
  • 11 Sep 2019 16:44 UTC
    | M 4.3 |
    48.8 km (30.3 mi) depth
    |
    15 km (9 mi) distance
    | USGS | Details
  • 23 Aug 2019 18:11 UTC
    | M 4.5 |
    44.6 km (27.7 mi) depth
    |
    60 km (37 mi) distance
    | USGS | Details
  • 23 Aug 2019 18:05 UTC
    | M 4.5 |
    36.4 km (22.6 mi) depth
    |
    83 km (51 mi) distance
    | USGS | Details
  • 07 Aug 2019 12:10 UTC
    | M 4.5 |
    23.8 km (14.8 mi) depth
    |
    53 km (33 mi) distance
    | USGS | Details

Earlier earthquakes in the same area since 1900

Strong mag. 6.3 earthquake - Near East Coast of Honshu, Japan on Sunday, 4 August 2019

Map of earlier quakes

 

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