2018 Anchorage earthquake

2018 Anchorage earthquake
Damage to the Glenn Highway
2018 Anchorage earthquake is located in Alaska
2018 Anchorage earthquake
UTC time2018-11-30 17:29:29
ISC event616643636
USGS-ANSSComCat
Local dateNovember 30, 2018
Local time08:29:28 AKST
Magnitude7.1 Mww[1]
Depth46.7 km (29.0 mi)
Epicenter61°20′46″N 149°57′18″W / 61.346°N 149.955°W / 61.346; -149.955
TypeDip-slip (normal)
Areas affectedAlaska
Max. intensityMMI VIII (Severe)
Peak acceleration0.474 g[2]
Aftershocks2,455 (As of January 1, 2020)[3]
Casualties117 injured[4]
USGS Shakemap for the event

On November 30, 2018, at 8:29 a.m. AKST (17:29 UTC), a magnitude 7.1[1] earthquake hit Anchorage in South Central Alaska.[5] The earthquake's epicenter was near Point Mackenzie, about 10 miles (16 km) north of Anchorage, and occurred at a depth of 29 miles (47 km). It was followed six minutes later by a magnitude 5.7 aftershock centered 2.5 miles (4.0 km) north-northwest of the municipality.[6][7] The earthquake could be felt as far away as Fairbanks.[8]

The National Tsunami Warning Center—itself located inside the quake zone, in Palmer, Alaska, 42 miles (68 km) northeast of Anchorage—issued tsunami warnings for nearby coastal areas, including Cook Inlet and the Kenai Peninsula, but they were lifted shortly after.[6][9]

  1. ^ a b "Nov. 30 Southcentral quake's magnitude revised to 7.1". KTVA. Archived from the original on April 18, 2019. Retrieved March 8, 2019.
  2. ^ Cite error: The named reference GEER was invoked but never defined (see the help page).
  3. ^ "USGS earthquake catalog".
  4. ^ "Earthquake-damaged Mat-Su school to remain closed the rest of the school year". Anchorage Daily News. December 3, 2018.
  5. ^ "M 7.0 – 12 km N of Anchorage, Alaska". United States Geological Survey. Retrieved November 30, 2018.
  6. ^ a b D'Oro, Rachel; Joling, Dan (November 30, 2018). "Powerful quakes buckle Alaska roads, trigger tsunami warning". Associated Press News. Retrieved November 30, 2018.
  7. ^ "M 5.7 – 4km NNW of Anchorage, Alaska 2018-11-30 17:35:37 (UTC)". United States Geological Survey. Retrieved November 30, 2018.
  8. ^ "The Latest: Scientists describe fault where quake happened". Associated Press News. November 30, 2018. Retrieved November 30, 2018.
  9. ^ "Alaska earthquake: Anchorage rocked by 7.0 tremors". BBC News. November 30, 2018. Retrieved November 30, 2018.