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: About 42000 people in MMI>=VII
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) 3.65 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 (in 100km) 0m (at 00:00) 00:04 ALASKA EC
1239017 0.9 30 Nov 2018 17:29 6.6M, 42.8km N/A 390 thousand (in 100km) 0m (at 00:00) 00:10 ALASKA EC
1239019 1 30 Nov 2018 17:29 6.6M, 35.5km 7.05 210 thousand (in MMI>=VII) 0m (at 00:00) 00:11 ALASKA EC
1239027 1 30 Nov 2018 17:29 6.7M, 31.1km 7.05 210 thousand (in MMI>=VII) 0.1m (at 00:00) 00:14 ALASKA EC
1239028 0.8 30 Nov 2018 17:29 6.6M, 39.1km 7.59 40 thousand (in MMI>=VII) 0m (at 00:00) 00:15 ALASKA EC
1239035 0.9 30 Nov 2018 17:29 7M, 40.9km 7.59 110 thousand (in MMI>=VII) 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 GREEN

Intensity Population
<1000 people
42000 people
270000 people
47000 people
no 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 38000 people
Alaska United States 280000 people
Alaska United States 44000 people
Alaska United States 53000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Bay City Alaska United States Village - 4 km
John Fitzgerald Kennedy City Alaska United States Village - 9 km
Eagle River Alaska United States Village - 19 km
Birchwood Alaska United States Village - 25 km
Chugiak Alaska United States Village - 25 km
Pittman Alaska United States Village - 33 km
Eklutna Alaska United States Village - 33 km
Houston Alaska United States Village 1200 people 34 km
Anchorage Alaska United States Major city 260000 people 15 km
Spenard Alaska United States Village - 16 km
Nunaka Valley Alaska United States Village - 17 km
Cottonwood Alaska United States Village - 27 km
Alexander Alaska United States Village - 37 km
Wasilla Alaska United States Village 5400 people 38 km
Willow Alaska United States Village 1600 people 41 km
Tanaina Alaska United States Village 4900 people 42 km
Rainbow Alaska United States Village - 40 km
Matanuska Alaska United States Village - 44 km
Gateway Alaska United States Village 2900 people 46 km
Girdwood Alaska United States Village - 59 km
Kashwitna Alaska United States Village - 59 km
Ladd Alaska United States Village - 69 km
Caswell Alaska United States Village - 73 km
Old Tyonek Alaska United States Village - 81 km
McDougal Alaska United States Village - 81 km
Montana Alaska United States Village - 83 km
Palmer Alaska United States Village 4500 people 53 km
Moose Creek Alaska United States Village - 61 km
Jonesville Alaska United States Village - 69 km
Eska Alaska United States Village - 71 km
Silvertip Alaska United States Village - 72 km
Saxton Alaska United States Village - 75 km
Portage Alaska United States Village - 76 km
Sunshine Alaska United States Village - 93 km
Skwentina Alaska United States Village - 95 km
Sterling Alaska United States Village 4700 people 100 km
Nkishka No 2 Alaska United States Village - 102 km
Nikiski Alaska United States Village 4300 people 104 km
Nikisnka Alaska United States Village - 108 km
Soldotna Alaska United States Village 3700 people 112 km
Soldocna Alaska United States Village - 113 km
Kenai Alaska United States Village 6900 people 113 km
Kustatan Alaska United States Village - 120 km
Port Ashton Alaska United States Village - 175 km
San Juan Cannery Alaska United States Village - 175 km
Crab Bay Alaska United States Village - 176 km
Latouche Alaska United States Village - 181 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)
Goose Bay 24 0
Sleepers Strip 38 0
Point Mackenzie 22 0
Bryant Ahp FRN 115 0
Little Susitna 21 0
Fire Island 17 0
Big Lake BGQ 46 0
Settlers Bay Airstrip 55 0
Birchwood 29 Civ. Paved No 4000
Lincoln Village Airpark 76 0
Twin Lake 61 0
Hilltop 114 0
Hunt Strip 61 0
Visnaw Lake 91 0
Satterburgs 107 0
Gannon's Landing 116 0
Elmendorf AFB EDF 65 Mil. Paved Yes 10000
Merrill Field MRI 42 Civ. Paved Yes 4000
Anchorage International ANC 44 Civ. Paved Yes 11500
Campbell Airstrip 87 0
Flying Crown 14 0
Rabbit Creek 11 0
Jack Fish Landing 46 0
Wicker WWA 96 Civ. Unpaved No 3700
Nancy Lake 66 0
Wasilla Lake 101 0
Memory Lake 128 0
Hardee Field 201 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
Bold 274 0
Hope 61 0
Thomas Strip 58 0
Laub 30 0
Jewell 34 0
Kashwitna Lake 57 0
Rustic Wilderness 58 0
Beluga BVU 40 Priv. Unpaved Yes 5000
Tyonek TYE 34 0
South Gasline 116 0
Secluded Lake 91 0
Montana Creek 76 0
Butte Municipal 20 0
Palmer Municipal PAQ 71 Civ. Paved Yes 6000
Wasilla Creek Airpark 84 0
Downwind Landing 67 0
Abi 229 0
Girdwood AQY 46 0
Jonesville Mine 265 0
Parker Lake 76 0
Nikolai Creek 9 0
West Papoose Lake Airpark 76 0
Graham 308 0
Skwentna SKW 45 Civ. Unpaved No 3400
Skilak Blm Helistop 84 0
Offshore Ststems-Kenai 46 0
Rotor Air 61 0
Carty's Airstrip 46 0
Dutch Landing Strip 91 0
Mackeys Lakes 53 0
Arness Lake 38 0
Dahler Homestead 91 0
Talkeetna TKA 109 Civ. Paved Yes 3500
Kenai Municipal ENA 28 Civ. Paved Yes 7500
Soldotna SXQ 33 Civ. Paved Yes 5000
Trading Bay Production 61 0
Gaede 35 0
Doyle Estates 15 0
Oceanic OCI unknown 0
Port Oceanic PRL unknown 0
Chenega Bay 22 0
Falls Bay Spb FLJ unknown 0

Ports

Intensity Name LOCODE Country
Anchorage USANC Wake Island
Palmer Wake Island
Tyonek USTYE Wake Island
Nikiski USNKI Wake Island
Kenai Wake Island
West Foreland USWFO Wake Island
Crab Bay Wake Island

More information

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