Moderate mag. 5.1 earthquake - Lake and Peninsula Parish, 24 mi east of Port Alsworth, Lake and Peninsula, Alaska, USA, on Wednesday, November 21, 2018 at 18:21 (GMT)

Moderate mag. 5.1 earthquake - Lake and Peninsula Parish, 24 mi east of Port Alsworth, Lake and Peninsula, Alaska, USA, on Wednesday, November 21, 2018 at 18:21 (GMT)

Moderate magnitude 5.1 earthquake at 127 km depth

21 Nov 18:25 UTC: First to report: EMSC after 3 minutes.
Nov 21 18:27: Magnitude recalculated from 5.4 to 5.7.
Hypocenter depth recalculated from 151.0 to 132.0 km.
Hypocenter depth recalculated from 132.0 to 127.0 km.
Nov 21 18:31: Magnitude recalculated from 5.7 to 5.2.
Hypocenter depth recalculated from 127.0 to 110.0 km.
Nov 21 18:32: Magnitude recalculated from 5.2 to 5.1.
Hypocenter depth recalculated from 110.0 to 127.0 km.
Date & time: Nov 21, 2018 18:21:42 UTC
Magnitude: 5.1
Depth: 127.0 km
Epicenter latitude / longitude: 60.14°N / 153.63°W (Lake and Peninsula, Alaska, United States)
Antipode: 60.14°S / 26.37°E
Nearest volcano: Iliamna (32 km / 20 mi)
Nearby towns and cities:
39 km (24 mi) E of Port Alsworth (pop: 159) --> See nearby quakes!
108 km (67 mi) WNW of Anchor Point (pop: 1,930) --> See nearby quakes!
129 km (80 mi) WNW of Homer (pop: 5,520) --> See nearby quakes!
133 km (82 mi) WSW of Kalifornsky (pop: 7,850) --> See nearby quakes!
138 km (86 mi) WSW of Kenai (pop: 7,660) --> See nearby quakes!
142 km (88 mi) WSW of Nikiski (pop: 4,490) --> See nearby quakes!
147 km (91 mi) WSW of Soldotna (pop: 4,540) --> See nearby quakes!
236 km (147 mi) WSW of Alaska City (pop: 298,700) --> See nearby quakes!
257 km (160 mi) WSW of Eagle River (pop: 24,800) --> See nearby quakes!
257 km (160 mi) WSW of Eagle River (Anchorage) (pop: 24,800) --> See nearby quakes!
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) 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.
Mag.DepthLocationSource
5.1127 km SOUTHERN ALASKAEMSC
5.8118 km- Southern AlaskaUSGS
5.5114 kmSouthern AlaskaGFZ
5.5122 kmSouthern AlaskaGeoAu

User reports for this quake (140)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Alaska City, Anchorage (236.3 km ENE of epicenter) [Map] / Very strong shaking (MMI VII) : More of a very hard, sideways JOLT than shaking. Came close to sloshing hot coffee out of my full mug on dining table in front of me. Rattled dishes in Chna cabinet. This location is close to Chester Creek, along one of the lower elevations in the Anchora  
Point Mackenzie (236.1 km NE of epicenter) [Map] / Weak shaking (MMI III)
Kodiak (269.9 km SSE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Anchorage, Keno Hills / Light shaking (MMI IV) : Did not hear it; felt like one quick, strong jolt followed by slight shaking, less than 30 seconds total.  
Eagle River west of the Glenn / Weak shaking (MMI III)
Kenai / Light shaking (MMI IV)
ANCHORAGE / Light shaking (MMI IV)
Anchor point, Alaska (111.6 km ESE of epicenter) [Map] / Very strong shaking (MMI VII) : Strong jolt, followed by intense shaking,followed by light shaking. Dishes broke, items fell off counter.  
Anchorage / Weak shaking (MMI III)
South of kenai 3 miles. About 5 seconds. Light sh / Light shaking (MMI IV) : Lasted about6 seconds  
Soldotna, Kenai Peninsula, Alaska (146.7 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Naknek (247.3 km SW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Wasilla / Light shaking (MMI IV) : I woke up to light shaking and some items rattling.  
Sterling (163.3 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Kasilof AK (133.9 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Valdez / Moderate shaking (MMI V)
Anchorage (231.1 km ENE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Big Lake, Matanuska-Susitna, Alaska (259.4 km NE of epicenter) [Map] / Light shaking (MMI IV)
Eagle River (258.1 km ENE of epicenter) [Map] / Very weak shaking (MMI II) : Long, slow rumble with very little shaking.  
Nikiski / Light shaking (MMI IV)
Sterling, AK / Very strong shaking (MMI VII)
Soldotna, Kenai Peninsula, Alaska (145.6 km ENE of epicenter) [Map] / Moderate shaking (MMI V)
Kenai (140 km ENE of epicenter) [Map] / Strong shaking (MMI VI)
Seward, AK / Weak shaking (MMI III)
Eagle River (266.3 km ENE of epicenter) [Map] / Light shaking (MMI IV) : Woke up wife scared animals  
Soldotna AK / Moderate shaking (MMI V)
Soldotna (143 km ENE of epicenter) [Map] / Light shaking (MMI IV) : It shook things pretty well. It seemed to lasted 20 or 30 seconds.  
Alaska City, Anchorage (231.7 km ENE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Stariski creek (107.1 km ESE of epicenter) [Map] / Moderate shaking (MMI V) : A hard jolt, some rolling, then another hard jolt and more rolling  
7206 Rovenna St, Anchroage, AK 99518 / Weak shaking (MMI III) : It could be felt by those sitting in rolling desk chairs, but not by most people standing. Items that hang from the ceiling were slightly swinging.  
Soldotna, AK / Strong shaking (MMI VI)
Palmer, near Mat-Su College (286.7 km NE of epicenter) [Map] / Weak shaking (MMI III) : Vibration light at first, with short burst of shaking toward end that swung light fixture a little. Lasted more than a minute.  
Alaska City, Anchorage (233.5 km ENE of epicenter) [Map] / Moderate shaking (MMI V) : Dimond Center Tower slid back and forth or almost a minute.  
JBER Alaska / Light shaking (MMI IV)
Ridgeway, Kenai Peninsula, Alaska (147.7 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Anchorage / Light shaking (MMI IV) : I was sleeping but then was awakened by the hard jerk of the bed and realized the whole floor was moving from left to right. It was very quick but large enough to shake me out of bed and into boots ready to run outside just in case. I take quakes very ser  
Eagle River west of the Glenn / Weak shaking (MMI III)
Homer, Tulin Lane / Light shaking (MMI IV)
Kenai (138.6 km ENE of epicenter) [Map] / Moderate shaking (MMI V) : It was a good shake (reported through our app)  
Anchorage AK / Light shaking (MMI IV) : Things rattled and the house shook a bit.  
35 km of Bear Creek, Kenai Peninsula, Alaska (206.1 km E of epicenter) [Map] / Light shaking (MMI IV)
Tesoro Refinery Nikiaki Alaska / Moderate shaking (MMI V)
soldotna / Light shaking (MMI IV)
Kasilof / Strong shaking (MMI VI)
Anchorage Oceanview area / Weak shaking (MMI III)
Cabin lake north Kenai / Light shaking (MMI IV)
KENAI / Moderate shaking (MMI V) : Initial jolt then 10sec light roll  
Kenai alaska / Moderate shaking (MMI V)
Anchorage Airport (230 km ENE of epicenter) [Map] / Very weak shaking (MMI II) : Felt chair and desk shaking.  
Chugiak- Eklutna Lake / Moderate shaking (MMI V) : hard jolt felt, pet birds and dog alarmed, wood stove glass broken  
Anchorage / Strong shaking (MMI VI)
Seward ,AK / Light shaking (MMI IV)
Anchorage / Very weak shaking (MMI II)
Palmer / Very weak shaking (MMI II) : I was sitting down, one light jolt and then tapered down. Palmer AK Family walking around didn't feel it.  
Funny river soldota / Moderate shaking (MMI V)
Bird Creek (246.5 km ENE of epicenter) [Map] / Light shaking (MMI IV) : We were awakened from bed slight rocking lasted about 10 sec.  
Kenai ak / Light shaking (MMI IV) : I felt one huge jolt, the shaking was semi weak didn't really feel the aftermath. Photos and coffee cups shook for a few minutes.  
South of anchorage / Very weak shaking (MMI II)
East Anchorage (241.6 km ENE of epicenter) [Map] / Light shaking (MMI IV) : Sitting at breakfast chaid underneath me and table shaking.  
Anchorage (234.2 km ENE of epicenter) [Map] / Weak shaking (MMI III)
Kodiak (274.8 km SSE of epicenter) [Map] / Light shaking (MMI IV)
Kenai, Alaska (142.6 km ENE of epicenter) [Map] / Moderate shaking (MMI V)
Seward, Kenai Peninsula, Alaska (237.2 km E of epicenter) [Map] / Moderate shaking (MMI V)
Nikiski, Kenai Peninsula, Alaska (148.3 km ENE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Ninilchik Alaska (110.8 km E of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Cooper Landing / Moderate shaking (MMI V) : Made our Fire Truck with 2000 gals of water rock back and forth inside our station. No harm done to fire station.  
Anchorage Midtown / Weak shaking (MMI III)
Anchorage (251.8 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Anchorage / Light shaking (MMI IV) : Shook the entire apartment for at least 10 seconds  
Anchorage / Moderate shaking (MMI V)
Eagle river / Strong shaking (MMI VI)
Anchorage / Weak shaking (MMI III)
Soldotna (152.3 km ENE of epicenter) [Map] / Moderate shaking (MMI V) : My dogs sat up and my cabin shook.  
Anchor Point / Strong shaking (MMI VI) : A few thins fell off shelves. Pets very scared. Too violent to walk.  
Seward (271.5 km E of epicenter) [Map] / Moderate shaking (MMI V)
near Kodiak Station, Alaska (281.3 km SSE of epicenter) [Map] / Moderate shaking (MMI V)
8 mile south of Soldotna / Strong shaking (MMI VI) : Slight trimmers then a final hard shake with more trimmers  
Ninilchik / Moderate shaking (MMI V)
Anchorage / Light shaking (MMI IV) : Felt a jolt then light shaking  
Winterset circle Seward,Alaska / Light shaking (MMI IV)
Alaska City, Anchorage (233.8 km ENE of epicenter) [Map] / Very weak shaking (MMI II) : Rolling effect, not shaking.  
near Big Lake, Matanuska-Susitna, Alaska (242.3 km NE of epicenter) [Map] / Light shaking (MMI IV) : Building swayed here in anchorage.  
Ealge River, Alaska / Weak shaking (MMI III)
Soldotna (174.5 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Kenai / Moderate shaking (MMI V)
Alaska City, Anchorage (241.5 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Ninilchik, Ak (108.3 km ESE of epicenter) [Map] / Light shaking (MMI IV)
Anchorage / Light shaking (MMI IV)
Anchorage / Light shaking (MMI IV)
Seward AK / Light shaking (MMI IV)
Anchorage (281.2 km NE of epicenter) [Map] / Very weak shaking (MMI II)
Kenai AK / Moderate shaking (MMI V)
Soldotna / Light shaking (MMI IV)
Anchorage / Moderate shaking (MMI V)
Soldotna AK / Light shaking (MMI IV) : Felt like something big ran into the side of my house  
Bear lake seward / Moderate shaking (MMI V) : Shaking a few seconds then shook a little morepages after initial hit.  
anchor point happy valley area (106.9 km ESE of epicenter) [Map] / Light shaking (MMI IV) : Shook entire house (reported through our app)  
Girdwood / Very weak shaking (MMI II) : I could hear rumbling  
anchorage (176.8 km NE of epicenter) [Map] / Light shaking (MMI IV)
Anchorage / Moderate shaking (MMI V) : I felt it. It was like driving on a bumpy road.  
Homer / Moderate shaking (MMI V) : Felt like it wad long. Small movements with a larger shake in the middle  
Homer / Moderate shaking (MMI V) : Lasted longer than I've felt before.  
Homer / Moderate shaking (MMI V) : I was sitting in my car and felt the car shaking  
Anchorage Hillside / Moderate shaking (MMI V)
Knik-Fairview, Matanuska-Susitna, Alaska (267.7 km NE of epicenter) [Map] / Very weak shaking (MMI II) : The house just kind of moved a bit it almost felt like I was imagining it (reported through our app)  
wasilla (288.4 km NE of epicenter) [Map] / Very weak shaking (MMI II) : Woke me up, thought the dog was laying up against the wall scratching himself. (reported through our app)  
Soldotna / Light shaking (MMI IV)
Palmer Knik river area / Weak shaking (MMI III)
Ninilchik Ak / Light shaking (MMI IV)
Anchorage (236.6 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Seward / Moderate shaking (MMI V)
Diamond ridge ak / Moderate shaking (MMI V)
Anchorage (236.3 km ENE of epicenter) [Map] / Very weak shaking (MMI II) : Tables very slightly shook on a second floor, felt like you had a train go by right outside the house  
Kenai, Alaska (139.7 km ENE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
East anchorage / Very weak shaking (MMI II) : Sitting.  
Anchorage / Moderate shaking (MMI V)
Gateway, Matanuska-Susitna, Alaska (288.2 km NE of epicenter) [Map] / Light shaking (MMI IV) : A hanging mirror and the TV swayed a bit (reported through our app)  
seward / Moderate shaking (MMI V)
ConocoPhllips Bldg, 700 G Street, Anchorage / Weak shaking (MMI III) : Felt a thump, the the building gently moved east to west for 5-10 seconds  
Anchorage, AK (235.2 km ENE of epicenter) [Map] / Moderate shaking (MMI V)
Homer, Kenai Peninsula, Alaska (131.5 km ESE of epicenter) [Map] / Light shaking (MMI IV)
Kenai, Alaska (142.6 km ESE of epicenter) [Map] / Light shaking (MMI IV)
anchorage / Very weak shaking (MMI II)
near Alaska City, Anchorage (238.2 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Anchorage, Ak 99517 near earthquake park / Moderate shaking (MMI V)
Palmer / Light shaking (MMI IV)
Palmer, ak / Light shaking (MMI IV)
Big lake (262.8 km NE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Lakes, Matanuska-Susitna, Alaska (281.4 km NE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Nikiski, Kenai Peninsula, Alaska (148.2 km ENE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Homer, Kenai Peninsula, Alaska (131.5 km ESE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Lakes, Matanuska-Susitna, Alaska (288 km NE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Alaska City, Anchorage (234.4 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Eagle River (United States of America, 262 km NE of epicenter) : Initially weak shock and low rumble, followed after 15 seconds or so by a slow rolling wave. Total duration ~ 45 secs. (reported through EMSC)  
Kodiak (United States of America, 249 km S of epicenter) : Light swaying for about 20 seconds. Hanging items swinging briefly . (reported through EMSC)  
Kenai (United States of America, 131 km NE of epicenter) : It was just one big SHAKE moved right on through like a wave! (reported through EMSC)  
Anchorage (United States of America, 234 km NE of epicenter) : I heard the chimney creaking. The house felt like it was swaying from very high winds. (reported through EMSC)  
Kenai (United States of America, 132 km NE of epicenter) : House felt like it was rolling. One picture fell off the wall. (reported through EMSC)  
Homer (United States of America, 107 km E of epicenter) : Lights shaking and house cracking (reported through EMSC)  
Eagle River (United States of America, 247 km NE of epicenter) : Initially weak shock accompanied by low rumble, followed after 15 seconds or so by a slow, rollong wave. Total duration ~ 45 sec. (reported through EMSC)  
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Aftershocks

More info

Recorded aftershocks, latest first (2 quakes)

  • 04 Jan 2019 22:23 UTC
    | M 3.9 |
    118 km (73.3 mi) depth
    |
    13 km (8 mi) distance
    | EMSC | Details
  • 14 Dec 2018 22:25 UTC
    | M 2.1 |
    66.5 km (41.3 mi) depth
    |
    19 km (12 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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