Strong mag. 6.8 earthquake - 6.8 GUAM REGION on Wednesday, 17 September 2014

Forte terremoto magnitudine 6.7 - GUAM REGION, mercoledì, 17 settembre 2014

Forte terremoto magnitudine 6.7 - GUAM REGION, mercoledì, 17 settembre 2014

Strong magnitude 6.7 earthquake at 140 km depth

17 Sep 06:22 UTC: Primo a segnalare: EMSC dopo 7 minuti.
Sep 17 08:10: Magnitudine ricalcolata da 7.1 a 6.7.
Profondità ricalcolata da 171.0 a 140.0 km.
Data & ora: 17 Sep 2014 06:14:46 UTC###AGESTRINGCOPY###
Magnitudine: 6.7
Profondità: 140.0 km
Epicentro latitudine / longitudine: 13,8°N / 144,44°E (Guam)
Vulcano più vicino: Forecast Seamount (72 km / 45 mi)
Nearby towns and cities:
47 km NW da Asan-Maina Village (pop: 2,140)
52 km NNW da Santa Rita Village (pop: 7,500)
53 km NW da Dededo Village (pop: 44,900)
67 km NNW da Inarajan Village (pop: 3,050)
85 km WSW da Songsong (Isole Marianne settentrionali)
95 km WSW da Dugi Village (Isole Marianne settentrionali)
182 km SW da San Jose (Isole Marianne settentrionali) (pop: 15,000)
211 km SW da Saipan (Isole Marianne settentrionali) (pop: 48,200)
Fonte dati primaria: EMSC
Stima dell'energia sismica liberata: 7,1 x 1014 joules (197 gigawatt hours, equivalent to 1,7 x 105 tons of TNT or 10,6 atomic bombs!) More info
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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.
MagnitudineProfonditàUbicazioneFonte
M 6.7140 km GUAM REGIONEMSC
M 6.7129 kmMariana IslandsGFZ
M 6.7137 km45km NW of Piti Village, GuamUSGS
M 6.7137 kmNW of Piti Village, GuamGeoAu

shake map
(shakemap: USGS)

User reports for this quake (28)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Andersen AFB / Strong shaking (MMI VI) : First earthquake and I was surprised how loud it was
Bell Tower Plaza, Agana, Guam / Strong shaking (MMI VI) : The shake started and after 8 seconds I got up from my desk and got under my door jamb. I started counting off ("1 thousand, 2 thousand...") and so forth till I reached 40 seconds and the shaking continued. All in all this quake lasted more than a minute. All we suffered was acoustic ceiling tile came down with a 14 inch piece of frame which was used to hold up the acoustic ceiling tile.
Kagman,Saipan, CNMI / Weak shaking (MMI III) : Rolling back and forth twice followed by short vibration in seat. I was sitting on a medical stool with wheels.
Andersen AFB, Guam (57.6 km ESE of epicenter) [Map] / Strong shaking (MMI VI) : I was just walking into work when the shaking started. I'm not new to earthquakes so I wasn't alarmed.
Guahan/Nanbo Bldg. Hagatna, Guam (49.8 km SE of epicenter) [Map] / Strong shaking (MMI VI) : Glass Doors were shaking and lasted almost 30 seconds at Suite 202 Guahan Building Route 4, Hagatna, Gu 96919
Ordot my grandson & I were standing unfer the fron (53 km SE of epicenter) [Map] / Moderate shaking (MMI V)
Ordot, my grandson & I were standing under the fro (53 km SE of epicenter) [Map] / not felt
Saipan / Very strong shaking (MMI VII)
Dededo, Guam / Moderate shaking (MMI V)
Hagatna, Guam (50.6 km SE of epicenter) [Map] / Strong shaking (MMI VI) : Ran out of the office, watched the streetlights shake. Seemed to last a long time. Very wobbly shaking- not sharp, just like going over waves in a boat.
Yigo Guam / Severe shaking (MMI VIII)
Yigo / Violent shaking (MMI IX) : That was the most intense earthquake I have ever experienced.
Tamuning, guam (49.3 km SE of epicenter) [Map] / Moderate shaking (MMI V)
Yigo, Guam / Strong shaking (MMI VI)
Naval Base Guam (47.6 km SSE of epicenter) [Map] / Strong shaking (MMI VI) : It was quite sudden, but lasted more than 30 seconds. It started as a rumble, then got stronger after the first few seconds, shaking the entire base house, all walls and floors reverberating and feeling like I was "lifted" up a little from ground zero. It was definitely strong, as all the neighbors rushed out of their doors to swipe sweat from their heads, "whew, that was intense!"
Alupang Beach Tower, Tamuning Guam (50.3 km SE of epicenter) [Map] / Strong shaking (MMI VI) : There was a loud noise before the earthquake, the kind of noise that makes you feel dizzy and then the noise was followed by a long and strong earthquake.
Piti Gu / Light shaking (MMI IV) : i would say more towards moderate shaking walls and windows could be seen shaking but nothing broken.
mangilao guam / Moderate shaking (MMI V)
mangilao guam / Moderate shaking (MMI V)
Mangilao, Guam / Weak shaking (MMI III) : About 10-20 seconds
Yigo guam / Strong shaking (MMI VI)
andersend AFB / Light shaking (MMI IV)
Yigo (Guam, 56 km SE of epicenter) : Seemed to be about 20 - 30 seconds long, standing picture frames were rattling, 5gal water dispenser was rocking around, cat got up and was looking around alert. (reported through EMSC)
Yigo (Guam, 56 km SE of epicenter) : It started small shaking then got stronger for a few seconds then all of a sudden we had a big strong shake. It knocked me off balance. Then it calmed down and kept going for awhile. I say it lasted about 1-2 minutes. (reported through EMSC)
Yigo (Guam, 56 km SE of epicenter) : The rumbling sounded like very powerful bass/subwoofer (reported through EMSC)
Agat (Guam, 49 km SE of epicenter) : It was a distinctive shaking and I ran outside since it was lasting over 30 seconds. (reported through EMSC)
Yigo (Guam, 56 km SE of epicenter) : it was a very strong earthquake. It shook the house violently, then again, then again. I ran for cover under a door frame. It lasted about 30-45 seconds. (reported through EMSC)
Yigo (Guam, 56 km SE of epicenter) : Swaying countinued for almost a minute. SUV was swaying. A boom sound and them rumbling for ten seconds or more. (reported through EMSC)
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Aftershocks of the 6.7 quake GUAM REGION 17 September 06:14 UTC

More info
Recorded aftershocks, latest first (12 quakes):
  • 12 Mar 2015 07:50 UTC
    | M 5.2 |
    46 km (28.6 mi) depth
    |
    133 km (83 mi) distance
    | GFZ | Details
  • 12 Mar 2015 07:20 UTC
    | M 4.7 |
    44 km (27.3 mi) depth
    |
    116 km (72 mi) distance
    | EMSC | Details
  • 12 Mar 2015 06:50 UTC
    | M 4.9 |
    40 km (24.9 mi) depth
    |
    113 km (70 mi) distance
    | EMSC | Details
  • 12 Mar 2015 06:28 UTC
    | M 5.0 |
    46.4 km (28.8 mi) depth
    |
    131 km (81 mi) distance
    | USGS | Details
  • 29 Jan 2015 08:42 UTC
    | M 4.4 |
    122 km (75.8 mi) depth
    |
    57 km (35 mi) distance
    | EMSC | Details
  • 30 Dec 2014 12:14 UTC
    | M 4.5 |
    118 km (73.3 mi) depth
    |
    52 km (32 mi) distance
    | EMSC | Details
  • 03 Dec 2014 12:27 UTC
    | M 4.8 |
    167 km (103.8 mi) depth
    |
    101 km (62 mi) distance
    | EMSC | Details
  • 24 Nov 2014 06:13 UTC
    | M 4.6 |
    116.2 km (72.2 mi) depth
    |
    100 km (62 mi) distance
    | USGS | Details
  • 09 Nov 2014 18:52 UTC
    | M 4.6 |
    134 km (83.3 mi) depth
    |
    77 km (48 mi) distance
    | USGS | Details
  • 05 Nov 2014 07:28 UTC
    | M 4.8 |
    111 km (69 mi) depth
    |
    90 km (56 mi) distance
    | USGS | Details
  • 29 Oct 2014 11:01 UTC
    | M 4.7 |
    39 km (24.2 mi) depth
    |
    96 km (60 mi) distance
    | EMSC | Details
  • 28 Sep 2014 21:27 UTC
    | M 4.4 |
    141 km (87.6 mi) depth
    |
    15 km (9 mi) distance
    | EMSC | Details

Earlier earthquakes in the same area

Strong mag. 6.7 earthquake - GUAM REGION on Wednesday, 17 September 2014 at 06:14 (GMT)
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