Earthquakes Continue in Northern Oregon

The area between Kent, Oregon and Maupin, Oregon has seen steady quake activity since December of 2006. The quakes have been in a concentrated area about 8 miles ESE of Maupin.

Most of the quakes are small and have not been felt. Quakes of this size usually go unnoticed by most. However, this sequence, now in its seventh month, has raised eyebrows because this kind of consistent quake activity has never been recorded in this location.

On Thursday afternoon, the strongest quake of the sequence was recorded. The 3.9 quake was the strongest in the region since a 4.2 earthquake in November of 1976.

CLICK HERE to view a special report showing all quakes in the area since 1976.

Small Quakes Rattle Lakeview, Oregon

Two small quakes rattled the California Oregon border near Lakeview, Oregon this evening. The two tremors, registering 3.4 and 3.0 on the richter scale struck right around 7:00 local time on May 30, 2007.

The following two maps show where these quakes occurred. These quakes are preliminary, and their location and magnitudes may change as new data is reviewed.

CLICK HERE to see where this quake struck. (291kb image)

CLICK HERE for an even closer view. (304kb image)

I have prepared a special report showing a map and a list of all quakes in this area, going back to 1982. CLICK HERE to view the special report.

I will revise this report as needed.

Minor quake reported in Portland

Associated Press

A minor earthquake was reported in Portland Saturday evening. There were no immediate reports of injury of damage.

The U.S. National Earthquake Information Center in Golden, Colo., put the intensity at 2.8, near the lower levels normally felt by humans. An intensity of 3 was registered on seismographs at some other points.

The epicenter was listed as being in close-in northeast Portland about 10 miles deep.

Geophysicist Dale Grant at the National Earthquake Information Center in Golden said a quake of that magnitude may be felt "but it's not going to do damage of any significance."

Nearly 17,000 earthquakes of magnitude 1 to 6 have been recorded in Oregon and Washington since 1970. Between 15 and 20 quakes a year are strong enough to be felt in the Northwest. Those are usually magnitude 3 to 4, according to the Oregon Department of Geology and Mineral Industries.