Idaho Seismic Swarm Spreads Over 400 Km²

GPSC-209W

M4.5 Strikes SE of Soda Springs

A swarm of at least 155 earthquakes have now struck near Soda Springs, Idaho, spreading over an area of about 400 km²  (~ 155 squared miles) since September 2, 2017.

The largest event measured 4.5 mwr, striking  42.612°N, 111.523°W at a depth of 5.8 km, USGS reported.

Idaho earthquake swarm map -USGS.

Related Links:

• EARTHQUAKE SWARM IN IDAHO CONSISTENT WITH SIGNIFICANT MAGMA MOVEMENT

EARTHQUAKE SWARM IN IDAHO CONSISTENT WITH SIGNIFICANT MAGMA MOVEMENT

GPSC-113B

Strong Seismic Cluster Striking Soda Springs, Idaho; M5.3 Event Largest Shock

A cluster of at least 34 earthquakes including shocks measuring magnitudes 5.3, 4.3 and 4.2 have struck the State of Idaho. The seismicity appears ongoing, and the pattern is consistent with large-scale magma movement.

EQ Details:
Magnitude: 5.3mww
Location: 42.624°N, 111.391°W; 9.2 km depth  [17km E of Soda Springs, Idaho]
Date-Time: 2017-09-02, 23:56:52 UTC

Felt reports: 1,691  (as of posting)

Idaho Earthquake Swarm Location Map. USGS

…

Earthquake Swarm Striking Puerto Rico Trench

Dozens of quakes hit Puerto Rico Trench in 7 days

A swarm of at least 119 earthquakes measuring 2.5Mw or greater have struck the Puerto Rico Trench in the 7 days to posting, according to the USGS/EHP.

EQ location map. A swarm of at least 119 earthquakes measuring 2.5Mw or greater have struck the Puerto Rico Trench in the 7 days to posting. Source:  USGS/EHP.

Earthquakes Rattle Oklahoma, Kansas

Another swarm of earthquakes strikes Oklahoma, Kansas

A cluster of at least 11 earthquakes have struck Oklahoma and the border area with neighboring state of Kansas in the past 24 hours, according to data posted by USGS/EHP.

The largest quake in the cluster measured 4.3Mw and was centered at 36.848°N, 97.699°W.

• M4.2, 21km SSE of Medford, Oklahoma 2015-01-27 15:58:40 UTC depth = 2.1km
• M3.8, 3km SSE of Perry, Oklahoma 2015-01-27 11:31:10 UTC depth = 3.7km
• M3.4, 6km NW of Caldwell, Kansas 2015-01-27 07:38:05 UTC depth = 4.8km
• M2.9, 11km S of Caldwell, Kansas 2015-01-27 05:44:22 UTC depth = 5.0km
• M3.1, 7km NW of Caldwell, Kansas 2015-01-27 05:28:53 UTC depth = 4.6km
• M2.6, 11km S of Caldwell, Kansas 2015-01-27 05:02:30 UTC depth = 5.0km
• M2.4, 5km SSW of Guthrie, Oklahoma 2015-01-27 02:22:03 UTC depth = 7.5km
• M3.0, 29km W of Helena, Oklahoma 2015-01-26 23:46:23 UTC depth = 2.7km
• M3.3, 5km S of Guthrie, Oklahoma 2015-01-26 21:45:13 UTC depth = 5.0km
• M4.3, 5km NE of Medford, Oklahoma 2015-01-26 19:30:44 UTC depth = 6.6km
• M2.5, 18km S of Perry, Oklahoma 2015-01-26 18:03:17 UTC depth = 8.3km

 

Earthquake Swarm Hits NW Nevada

SEISMIC HAZARD
HEIGHTENED SEISMICITY IN U.S.
SCENARIOS 700, [500,] 08, 07, 02
.

Earthquakes strike north of Bald Mountain, NV

Another swarm of at least 15 earthquakes has rattled northwestern Nevada over the past 24 hours.

The quakes measured between 2.5 and 3.9Mw, reported USGS/EHP.

The two largest events today measured 3.9Mw occurring at depths of 10.2km and 6.8km, said the report.

The latest swarm brings the total number of events in the area to at least 73 over the past 30 days.

EQ location map. Source: USGS/EHP

The U.S. events include 30 out of 42 earthquakes globally, measuring ≥ 2.5Mw, over the past 24 hours, and three out of six significant earthquakes in 30 days.

Related Links

• M4.2 Quake Strikes N. Nevada December 4, 2014
• Significant Quake Strikes Arizona December 1, 2014
• Earthquakes Strike Oklahoma, Texas November 30, 2014
• Earthquakes Strike 11 U.S. States November 25, 2014
• Significant Quake Strikes Near Irving, Texas November 23, 2014
• Intense Seismicity Continues in N. Nevada November 13, 2014
• Nevada Quake Swarm Intensifies November 6, 2014
• Earthquake Swarm Rattles N. Nevada November 5, 2014

 

Significant Aftershocks Continue to Rock Aleutian Islands

8 significant aftershocks strike Aleutian Islands, following M7.0 quake

At least 8 significant aftershocks, measuring 5.0Mw or larger, were among a swarm of dozen quakes that hit Aleutian Islands, Alaska, following a powerful 7.0 mainshock that occurred ESE of Adak, Alaska earlier today.

West Coast and Alaska Tsunami Warning Center said there was no tsunami advisory, watch or warning in effect after the mainshock.

The M7.0 quake struck about 94km (58mi) ESE of Adak, Alaska and was strongly felt in Adak, about 2,000km southwest of Anchorage, according to reports.

There was no report of major damage or injuries, as of posting.

Earthquake location Map. Source: USGS/EHP

Details of Mainshock

• Event Time: 2013-08-30 16:25:02 UTC
• Location: 51.610°N 175.361°W depth=33.5km (20.8mi)
• Nearby Cities
  • 94km (58mi) ESE of Adak, Alaska
  • 1,520km (944mi) SSE of Anadyr’, Russia