A magnitude 4.7 earthquake struck 13 miles north of Mount Iliamna on the western side of the Kenai Peninsula on Wednesday, March 23, 2022, in Alaska. (Screenshot/The Alaska Earthquake Center)

A magnitude 4.7 earthquake struck 13 miles north of Mount Iliamna on the western side of the Kenai Peninsula on Wednesday, March 23, 2022, in Alaska. (Screenshot/The Alaska Earthquake Center)

4.7 magnitude earthquake strikes north of Iliamna

Mount Iliamna is an active volcano on the west side of Cook Inlet

A 4.7 magnitude earthquake shook Kenai Peninsula communities at 10:45 a.m. Wednesday morning, according to the Alaska Earthquake Center.

The epicenter of the temblor struck just 13 miles north of Mount Iliamna, which is an active volcano on the west side of Cook Inlet.

A magnitude 5.1 earthquake struck the western side of Cook Inlet on March 12, centered 31 miles northwest of Kenai and 31 miles northeast of the Mount Redoubt volcano. A 3.6 magnitude earthquake struck 29 miles northeast of Kenai at a depth of 28 miles on March 8.

Wednesday’s tremor near Iliamna hit at a depth of 92 miles.

ADVERTISEMENT
0 seconds of 0 secondsVolume 0%
Press shift question mark to access a list of keyboard shortcuts
00:00
00:00
00:00
 

According to the earthquake center, strong quakes in southern Alaska are caused by the subducting Pacific and overriding North American tectonic plates. The second-largest rattle ever recorded worldwide struck under Prince William Sound in 1964. That earthquake was 9.2 on the Richter scale.

Some less devastating shakes are caused by the subducting Pacific Plate descending toward the mantle beneath the North American Plate. This zone of seismic activity extends from the Aleutian Arc to the Alaska Peninsula and Cool Inlet, where it ends underneath the northern foothills of the Alaska Range.

There were five other temblors on the Kenai Peninsula on Wednesday, as of 5 p.m.: a 1.9 magnitude in Clam Gulch, a 1.2 in Tyonek, a 1.1 in Nikiski, a 1.9 in Whittier and a 1.5 in Ninilchik.

Reach reporter Camille Botello at camille.botello@peninsulaclarion.com.

More in News

A map of areas proposed for annexation by the City of Soldotna. (Provided by City of Soldotna)
Soldotna adds annexation proposal to ballot

The proposed annexation is split across five small areas around the city.

Nets are extended from North Kenai Beach in Kenai, Alaska, during the first day of the Kenai River personal use dipnet fishery on Thursday, July 10, 2025. (Jake Dye/Peninsula Clarion)
‘A really good day’

Kenai River personal use sockeye salmon dipnet fishery opens.

The entrance to the Kenai Peninsula Borough building in Soldotna is seen here on June 1. (Photo by Brian Mazurek/Peninsula Clarion)
Borough assembly to consider ordinance to increase residential property tax exemption

If approved by voters in October, the ordinance would increase the tax exemption by $25,000.

Vice President Kelly Cooper speaks during a meeting of the Kenai Peninsula Borough Assembly in Soldotna, Alaska, on Tuesday, July 8, 2025. (Jake Dye/Peninsula Clarion)
Borough considers seasonal sales tax rate

Borough sales tax would be modified from a flat 3% to a seasonal model of 4% in summer months and 2% in winter months.

The Kasilof River is seen from the Kasilof River Recreation Area, July 30, 2019, in Kasilof, Alaska. (Photo by Erin Thompson/Peninsula Clarion)
King salmon fishing on Kasilof closes Thursday

If any king salmon is caught while fishing for other species, they may not be removed from the water and must be released immediately.

Un’a, a female sea otter pup who was admitted to the Alaska SeaLife Center in June 2025, plays with an enrichment toy at the center in Seward, Alaska. Photo courtesy of the Alaska SeaLife Center
SeaLife Center admits 2 seal pups, 1 orphaned otter

The three pups join the Alaska SeaLife Center’s ‘growing’ patient list.

James Wardlow demonstrates flilleting a salmon with an ulu during a smoked salmon demonstration, part of Fish Week 2023, on Wednesday, July 19, 2023, at the Kenai National Wildlife Refuge Visitor Center in Soldotna, Alaska. (Jake Dye/Peninsula Clarion)
Refuge to celebrate all things fish during weeklong event

Fish Week will take place July 16-19.

President Zen Kelly speaks during a meeting of the Kenai Peninsula Borough School District Board of Education in Soldotna, Alaska, on Monday, July 7, 2025. (Jake Dye/Peninsula Clarion)
School board finalizes budget with deep cuts to programming, classrooms

Multiple members of the board said they were frustrated by the state’s failure to fund education.

Most Read

You're browsing in private mode.
Please sign in or subscribe to continue reading articles in this mode.

Peninsula Clarion relies on subscription revenue to provide local content for our readers.

Subscribe

Already a subscriber? Please sign in