M 6.6 in United States on 30 Nov 2018 17:29 UTC

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 6.6M
Depth: 39.1 Km
Lat/Lon: 61.3334 , -149.9331
Event Date: 30 Nov 2018 17:29 UTC
30 Nov 2018 08:29 Local
Exposed Population: 390000 people within 100km
Source: ALASKA EC ak20419010
Inserted at: 30 Nov 2018 17:44 UTC
INFORM Coping capacity of the alert score: 2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
Tsunami GDACS score
ALASKA EC 0.8 0 0.8
ak20419010 Scaled population (vector) 4.03 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 0.65      
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1239013 0.9 30 Nov 2018 17:29 6.7M, 43.9km N/A 390 thousand 0m (at 00:00) 00:04 ALASKA EC
1239017 0.9 30 Nov 2018 17:29 6.6M, 42.8km N/A 390 thousand 0m (at 00:00) 00:10 ALASKA EC
1239019 1 30 Nov 2018 17:29 6.6M, 35.5km 7.05 390 thousand 0m (at 00:00) 00:11 ALASKA EC
1239027 1 30 Nov 2018 17:29 6.7M, 31.1km 7.05 390 thousand 0.1m (at 00:00) 00:14 ALASKA EC
1239028 0.8 30 Nov 2018 17:29 6.6M, 39.1km 7.59 390 thousand 0m (at 00:00) 00:15 ALASKA EC
1239035 0.9 30 Nov 2018 17:29 7M, 40.9km 7.59 390 thousand 0.1m (at 00:08) 00:27 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in United States ,of Alaska (population 572,432) . The alertlevel for this event is ORANGE

Intensity Population
200000 people
170000 people
16000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 1 1239019 61.318/-149.944 6.7 43.9 7.05 30 Nov 2018 17:43 00:14 (new episode)
2 1 1239027 61.318/-149.944 6.7 43.9 7.05 30 Nov 2018 17:44 00:14 (new episode)
3 1 1239028 61.318/-149.944 6.7 43.9 7.05 30 Nov 2018 17:45 00:15 (new episode)
4 0.8 1239028 61.318/-149.944 6.7 43.9 7.05 30 Nov 2018 17:50 00:21 (upd of #3)
5 0.8 1239035 61.333/-149.933 6.6 39.1 7.26 30 Nov 2018 17:57 00:27 (new episode)
6 1 1239035 61.333/-149.933 6.6 39.1 7.26 30 Nov 2018 18:02 00:33 (upd of #5)
7 0.8 1239035 61.333/-149.933 6.6 39.1 7.26 30 Nov 2018 18:21 00:52 (upd of #6)
8 0.9 1239035 61.333/-149.933 6.6 39.1 7.26 30 Nov 2018 18:40 01:11 (upd of #7)
9 0.9 1239035 61.34/-149.937 6.6 40.9 7.72 30 Nov 2018 23:11 05:41 (upd of #8)

Affected Provinces

Intensity Region Province Country Population
Alaska United States 180000 people
Alaska United States 180000 people
Alaska United States 22000 people
Alaska United States 41000 people
Alaska United States <1000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Bay City Alaska United States Village5 - 4 km
Anchorage Alaska United States Major city 260000 people 15 km
Spenard Alaska United States Village4 - 16 km
Nunaka Valley Alaska United States Village4 - 17 km
John Fitzgerald Kennedy City Alaska United States Village4 - 9 km
Eagle River Alaska United States Village5 - 19 km
Birchwood Alaska United States Village5 - 25 km
Chugiak Alaska United States Village4 - 25 km
Cottonwood Alaska United States Village4 - 27 km
Pittman Alaska United States Village5 - 33 km
Eklutna Alaska United States Village5 - 33 km
Houston Alaska United States Village5 1200 people 34 km
Alexander Alaska United States Village5 - 37 km
Wasilla Alaska United States Village5 5400 people 38 km
Willow Alaska United States Village5 1600 people 41 km
Tanaina Alaska United States Village5 4900 people 42 km
Matanuska Alaska United States Village5 - 44 km
Gateway Alaska United States Village5 2900 people 46 km
Palmer Alaska United States Village5 4500 people 53 km
Kashwitna Alaska United States Village5 - 59 km
Rainbow Alaska United States Village5 - 40 km
Girdwood Alaska United States Village5 - 59 km
Moose Creek Alaska United States Village4 - 61 km
Jonesville Alaska United States Village5 - 69 km
Ladd Alaska United States Village5 - 69 km
Eska Alaska United States Village5 - 71 km
Caswell Alaska United States Village5 - 73 km
Portage Alaska United States Village5 - 76 km
Old Tyonek Alaska United States Village5 - 81 km
McDougal Alaska United States Village5 - 81 km
Montana Alaska United States Village5 - 83 km
Sunshine Alaska United States Village5 - 93 km
Skwentina Alaska United States Village5 - 95 km
Sterling Alaska United States Village5 4700 people 100 km
Silvertip Alaska United States Village4 - 72 km
Saxton Alaska United States Village5 - 75 km
Gilpatricks Alaska United States Village5 - 84 km
Tunnel Alaska United States Village5 - 88 km
Grandview Alaska United States Village5 - 93 km
Hunter Alaska United States Village5 - 95 km
Nkishka No 2 Alaska United States Village5 - 102 km
Nikiski Alaska United States Village5 4300 people 104 km
Nikisnka Alaska United States Village5 - 108 km
Lawing Alaska United States Village5 - 108 km
Lakeview Alaska United States Village5 - 112 km
Soldotna Alaska United States Village5 3700 people 112 km
Soldocna Alaska United States Village5 - 113 km
Kenai Alaska United States Village5 6900 people 113 km
Kustatan Alaska United States Village5 - 120 km
Peters Creek Alaska United States Village5 - 123 km
Kalifornsky Alaska United States Village4 5800 people 126 km
Port Nellie Juan Alaska United States Village5 - 129 km
Woodrow Alaska United States Village5 - 131 km
Cohoe Alaska United States Village5 1100 people 131 km
Kasilof Village Alaska United States Village5 - 133 km
Bear Creek Alaska United States Village5 1700 people 134 km
Seward Alaska United States Major city 2800 people 137 km
Curry Alaska United States Village5 - 142 km
Chelatna Lodge Alaska United States Village4 - 145 km
Eureka Roadhouse Alaska United States Village4 - 161 km
Tazlina Alaska United States Village5 <1000 people 201 km

see full list


Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Elmendorf AFB EDF 65 Mil. Paved Yes 10000
Merrill Field MRI 42 Civ. Paved Yes 4000
Little Susitna 21 0
Big Lake BGQ 46 0
Goose Bay 24 0
Sleepers Strip 38 0
Point Mackenzie 22 0
Bryant Ahp FRN 115 0
Anchorage International ANC 44 Civ. Paved Yes 11500
Campbell Airstrip 87 0
Fire Island 17 0
Settlers Bay Airstrip 55 0
Birchwood 29 Civ. Paved No 4000
Flying Crown 14 0
Lincoln Village Airpark 76 0
Twin Lake 61 0
Hilltop 114 0
Rabbit Creek 11 0
Hunt Strip 61 0
Jack Fish Landing 46 0
Visnaw Lake 91 0
Satterburgs 107 0
Wicker WWA 96 Civ. Unpaved No 3700
Gannon's Landing 116 0
Nancy Lake 66 0
Wasilla Lake 101 0
Memory Lake 128 0
Honeybee Lake Aero Park 61 0
Gattis Strip 98 0
Colberg 38 0
Four Corners 91 0
Shirley Lake 56 0
Deshka Landing 34 0
B & B Boys Ranch 91 0
Boisselle's Strip 122 0
Willow WOW 67 Civ. Unpaved No 4400
Cardwell Strip 130 0
Sky Ranch At Pioneer Peak 37 0
Thomas Strip 58 0
Laub 30 0
Palmer Municipal PAQ 71 Civ. Paved Yes 6000
Jewell 34 0
Kashwitna Lake 57 0
Rustic Wilderness 58 0
Hardee Field 201 0
Bold 274 0
Hope 61 0
Butte Municipal 20 0
Wasilla Creek Airpark 84 0
Downwind Landing 67 0
Abi 229 0
Girdwood AQY 46 0
Beluga BVU 40 Priv. Unpaved Yes 5000
Jonesville Mine 265 0
Tyonek TYE 34 0
South Gasline 116 0
Secluded Lake 91 0
Montana Creek 76 0
Parker Lake 76 0
Skwentna SKW 45 Civ. Unpaved No 3400
Rotor Air 61 0
Carty's Airstrip 46 0
Dutch Landing Strip 91 0
Arness Lake 38 0
Kenai Municipal ENA 28 Civ. Paved Yes 7500
Summit Lake 396 0
Nikolai Creek 9 0
West Papoose Lake Airpark 76 0
Whittier 9 0
Graham 308 0
Quartz Creek JLA 137 0
Skilak Blm Helistop 84 0
Offshore Ststems-Kenai 46 0
Mackeys Lakes 53 0
Lawing 145 0
Dahler Homestead 91 0
Talkeetna TKA 109 Civ. Paved Yes 3500
Soldotna SXQ 33 Civ. Paved Yes 5000
Trading Bay Production 61 0
Gaede 35 0
Doyle Estates 15 0
Victory 549 0
Farrars 572 0
Perry Island PYL unknown 0
Kasilof 38 0
Winter's Strip 34 0
Seward SWD 7 Civ. Paved No 4200
Era Chulitna River 293 0
Sheep Mountain SMU 838 0
Nugget Bench 613 0
Drift River DRF 9 0
Gunsight Mountain 899 0
Skelton 1002 0
Oceanic OCI unknown 0
Rainy Pass 579 0
Ninilchik NIN 84 0
Port Alsworth PTA 85 0

Ports

Intensity Name LOCODE Country
Anchorage USANC Wake Island
Palmer Wake Island
Tyonek USTYE Wake Island
Whittier USWQF Wake Island
Nikiski USNKI Wake Island
Kenai Wake Island
West Foreland USWFO Wake Island
Seward USSEW Wake Island
Drift River Wake Island
Ninilchik Wake Island

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.