Unified Interior Regions

Hawaii

The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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Filter Total Items: 68
Date published: March 9, 2016

Pacific Islands Water Science Center

This center is one of 48 Water Science Centers in the USGS, and its mission is to collect, analyze and disseminate the impartial hydrologic data and information needed to wisely manage water resources for the people of the United States, the State of Hawaii, and other Pacific Islands.

Date published: March 9, 2016

Salton Sea Science Office

USGS Salton Sea Science Office works closely with Federal, State, local, nongovernmental, and tribal partners, providing information for management actions. This USGS office has a unique charter to serve as an independent liaison between resource managers and the scientific community. In that capacity the the office provides scientific information and evaluations to decision makers who are...

Date published: March 2, 2016

Hawaiian Volcano Observatory (HVO)

HVO operates monitoring networks, assesses hazards, and issues notifications of volcanic activity and earthquakes in the State of Hawai‘i. HVO scientists conduct fundamental research on volcanic processes and work to educate the communities at risk. HVO is located in Hawaiʻi Volcanoes National Park on the Island of Hawaii.

Date published: November 17, 2015
Status: Active

Webinar: Turning Ecological Stream Classifications into Actionable Science

View this webinar to learn about stream classification efforts in Hawai'i.

Contacts: Ralph Tingley
Date published: September 10, 2014
Status: Completed

Sea Urchin Mortality in the Hawaiian Islands

Scientists from the U.S. Geological Survey (USGS), University of Hawaii, the State of Hawaii Division of Aquatic Resources, and The Nature Conservancy are investigating unusual mortality of collector urchins (Tripneustes gratilla) that has been ongoing since February 2014. As grazers, urchins play a critical role in preventing overgrowth of algae on tropical coral reefs. Awareness of...

Contacts: Thierry M Work
Date published: January 1, 2005
Status: Completed

Mud Damages Hawaiian Coral Reefs

Information about the USGS Pacific Coastal and Marine Science Center's research from 2000-2004, on how mud damages hawaiian coral reefs.

Date published: January 1, 2004
Status: Completed

Island-hopping Coral Larvae in Hawaii

Information about the USGS Pacific Coastal and Marine Science Center's 2003 study on island-hopping coral larvae in Hawaii.

Date published: January 1, 1989
Status: Completed

Giant Hawaiian Underwater Landslides

Information about the USGS Pacific Coastal and Marine Science Center's studies of giant underwater landslides in 1986 and 1988.

Contacts: Laura Torresan
Filter Total Items: 89
Date published: March 17, 2016

Volcano Monitoring Data

Many volcanoes in the U.S. are monitored by arrays of several instruments that detect subtle movements within the earth and changes in gas and water chemistry. The Volcano Hazards Program streams this data to its Volcano Observatories and makes it available on volcano-specific websites.

Date published: March 4, 2016

Current Alerts for U.S. Volcanoes

Volcano-alert notifications are produced by Volcano Observatory scientists based on analysis of data from monitoring networks, direct observations, and satellite sensors. They are issued for both increasing and decreasing volcanic activity and include text about the nature of the unrest or eruption and about potential or current hazards and likely outcomes.

Date published: January 1, 2016

Digital image mosaic of the nearshore coastal waters of Kamalo on the island of Moloka'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a digital image mosaic with 1.0 foot-per-pixel resolution of the Kamalo area on the south coast of Moloka'i. This image mosaic was generated using digitized 1:10K natural color photographs collected in January 2000 by Air Survey Hawai'i, Inc. for the U.S. Geological Survey. Also available is a lower-resolution 'browse' graphic of the image mos

Date published: January 1, 2016

Digital image mosaic of the nearshore coastal waters of Wai'alae on the island of O'ahu generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a digital image mosaic with 1.0 foot-per-pixel (0.3048 meter-per-pixel) resolution of the Wai'alae area on the southeast coast of O'ahu. This image mosaic was generated using digitized 1:10K natural color photographs collected by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service. Also available is a lower-reso

Date published: January 1, 2016

Digital image mosaic of the nearshore coastal waters of Kamiloloa on the island of Moloka'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a digital image mosaic with 1 meter-per-pixel resolution of the Kamiloloa area on the south coast of Moloka'i. This image mosaic was generated using digitized 1:35K natural color photographs collected in September 1993 by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS). Also available is a lower-resoluti

Date published: January 1, 2016

Digital image mosaics of the nearshore coastal waters of selected areas on the island of Hawai'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains image mosaics generated using digitized 1:24K natural color photographs collected in June 2000 by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS). These four image mosaics have 1.0 meter-per-pixel resolution, and intermittently cover approximately 53 km (33 mi) of shallow, coastal waters along the

Date published: January 1, 2016

Digital image mosaic of the nearshore coastal waters of Kaunakakai on the island of Moloka'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a digital image mosaic with 1.0 foot-per-pixel resolution of the Kaunakakai area on the south coast of Moloka'i. This image mosaic was generated using digitized 1:10K natural color photographs collected in January 2000 by Air Survey Hawai'i, Inc. for the U.S. Geological Survey. Also available is a lower-resolution 'browse' graphic of the image

Date published: January 1, 2016

Physics-based numerical circulation model outputs of ocean surface circulation during the 2010-2013 summer coral-spawning seasons in Maui Nui, Hawaii, USA

Ocean surface current results from a physics-based, 3-dimensional coupled ocean-atmosphere numerical model were generated to understand coral larval dispersal patterns in Maui Nui, Hawaii, USA. The model was used to simulate coral larval dispersal patterns from a number of existing State-managed reefs and large tracks of reefs with high coral coverage that might be good candidates for marin...

Date published: January 1, 2016

Digital image mosaic of the nearshore coastal waters of Kawela on the island of Moloka'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a digital image mosaic with 1.0 foot-per-pixel resolution of the Kawela area on the south coast of Moloka'i. This image mosaic was generated using digitized 1:10K natural color photographs collected in January 2000 by Air Survey Hawai'i, Inc. for the U.S. Geological Survey. Also available is a lower-resolution 'browse' graphic of the image mos

Date published: January 1, 2016

Digital shaded-relief image mosaic of the nearshore coastal waters of southcentral Moloka'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a shaded-relief image mosaic of the nearshore coastal waters along southcentral Moloka'i. This image mosaic was generated using digitized 1:35K natural color photographs collected in September 1993 by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS) and scanned in at 1-meter resolution. Several of the 1-m

Date published: January 1, 2016

Digital image mosaic of the nearshore coastal waters of Waiakane on the island of Moloka'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a digital image mosaic with 1 meter-per-pixel resolution of the Waiakane area on the south coast of Moloka'i. This image mosaic was generated using digitized 1:35K natural color photographs collected in September 1993 by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS). Also available is a lower-resolutio

Date published: January 1, 2016

Digital image mosaic of the nearshore coastal waters of Portlock on the island of O'ahu generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains a digital image mosaic with 1.0 foot-per-pixel (0.3048 meter-per-pixel) resolution of the Portlock area on the southeast coast of O'ahu. This image mosaic was generated using digitized 1:10K natural color photographs collected by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service. Also available is a lower-resolu

Filter Total Items: 366
preliminary map of Kīlauea lower East Rift Zone lava flow thicknesses
February 19, 2019

Data depicted on this preliminary map of Kīlauea lower East Rift Zone lava flow thicknesses are subject to change.

Color graphic showing lava flows on the central-southeast flank of Mauna Loa
January 1, 2019

"Geologic map of the central-southeast flank of Mauna Loa" (https://pubs.er.usgs.gov/publication/sim2932B)

Thermal map of fissure system and lava flows.
August 15, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Wednesday, August 15.

Map showing fissure flows
August 14, 2018

Map as of 12:00 p.m. HST, August 14, 2018.

Thermal map of fissure system and lava flows.
August 11, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Saturday, August 11.

Thermal map of fissure system and lava flows.
August 9, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Thursday, August 9.

Map showing fissure flows
August 9, 2018

Map as of 2:00 p.m. HST, August 9, 2018.

Map showing fissure flows
August 7, 2018

Map as of 11:00 a.m. HST, August 7, 2018.

Thermal map of fissure system and lava flows.
August 6, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Monday, August 6. 

Map showing fissure flows
August 6, 2018

Map as of 2:00 p.m. HST, August 6, 2018.

Thermal map of fissure system and lava flows.
August 3, 2018

This thermal map shows the fissure system and lava flows as of 12:30 pm on Friday, August 3.

Map showing lower East Rift Zone lava flows and fissure
August 3, 2018

Map as of 10:00 a.m. HST, August 3, 2018

Filter Total Items: 116
Publication Thumbnail
Year Published: 2009

An integrated approach to benthic habitat mapping using remote sensing and GIS: An example from the Hawaiian Islands

This chapter documents our effort to map benthic habitats within the KalokoHonokohau National Historic Park, Hawai`i, USA. We produce detailed benthichabitat maps by using a combination of color aerial photography, high-resolution bathymetry, and georeferenced underwater video and still photography. We classify individual habitat polygons using...

Yang, X.; Gibbs, A.E.; Cochran, Susan A.

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Year Published: 2008

Suspended-sediment and nutrient loads for Waiakea and Alenaio Streams, Hilo, Hawaii, 2003-2006

Suspended sediment and nutrient samples were collected during wet-weather conditions at three sites on two ephemeral streams in the vicinity of Hilo, Hawaii during March 2004 to March 2006. Two sites were sampled on Waiakea Stream at 80- and 860-foot altitudes during March 2004 to August 2005. One site was sampled on Alenaio Stream at 10-foot...

Presley, Todd K.; Jamison, Marcael T.J.; Nishimoto, Dale C.
Suspended-sediment and nutrient loads for Waiakea and Alenaio Streams, Hilo, Hawaii, 2003-2006; 2008; OFR; 2007-1429; Presley, Todd K.; Jamison, Marcael T. J.; Nishimoto, Dale C.

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Year Published: 2008

Ground Water on Tropical Pacific Islands - Understanding a Vital Resource

To a casual observer, tropical Pacific islands seem idyllic. Closer scrutiny reveals that their generally small size makes them particularly vulnerable to economic and environmental stresses imposed by rapidly growing populations, increasing economic development, and global climate change. On these islands, freshwater is one of the most precious...

Tribble, Gordon
Ground Water on Tropical Pacific Islands - Understanding a Vital Resource; 2008; CIR; 1312; Tribble, Gordon

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Year Published: 2008

Ground-Water Availability in the Wailuku Area, Maui, Hawai'i

Most of the public water supply in Maui, Hawai'i, is from a freshwater lens in the Wailuku area of the island. Because of population growth, ground-water withdrawals from wells in this area increased from less than 10 Mgal/d during 1970 to about 23 Mgal/d during 2006. In response to increased withdrawals from the freshwater lens in the Wailuku...

Gingerich, Stephen B.
Ground-Water Availability in the Wailuku Area, Maui, Hawai'i; 2008; SIR; 2008-5236; Gingerich, Stephen B.

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Year Published: 2008

The Significance of Accounting Order for Evapotranspiration and Recharge in Monthly and Daily Threshold-Type Water Budgets

Most threshold-type water-budget models account for the loss of water by evapotranspiration before accounting for recharge. Recharge estimates can differ substantially, depending on whether recharge is counted before or after evapotranspiration in the water budget. This disparity is the source of uncertainty and is most pronounced for areas where...

Oki, Delwyn S.
The Significance of Accounting Order for Evapotranspiration and Recharge in Monthly and Daily Threshold-Type Water Budgets; 2008; SIR; 2008-5163; Oki, Delwyn S.

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Year Published: 2008

Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2007, to June 30, 2008; Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii

Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. The program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream and to assess the effects from the H-1 storm drain on Manoa Stream. For this program, rainfall data were...

Presley, Todd K.; Jamison, Marcael T.J.; Young, Stacie T.M.
Rainfall, Discharge, and Water-Quality Data During Stormwater Monitoring, July 1, 2007, to June 30, 2008; Halawa Stream Drainage Basin and the H-1 Storm Drain, Oahu, Hawaii; 2008; OFR; 2008-1233; Presley, Todd K.; Jamison, Marcael T.J.; Young, Stacie T.M.

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Year Published: 2008

Effects of the H-3 Highway Stormwater Runoff on the Water Quality of Halawa Stream, Oahu, Hawaii, November 1998 to August 2004

Since November 1998, water-quality data have been collected from the H-3 Highway Storm Drain C, which collects runoff from a 4-mi-long viaduct, and from Halawa Stream on Oahu, Hawaii. From January 2001 to August 2004, data were collected from the storm drain and four stream sites in the Halawa Stream drainage basin as part of the State of Hawaii...

Wolff, Reuben H.; Wong, Michael F.
Effects of the H-3 Highway Stormwater Runoff on the Water Quality of Halawa Stream, Oahu, Hawaii, November 1998 to August 2004; 2008; SIR; 2008-5034; Wolff, Reuben. H.; Wong, Michael F.

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Year Published: 2007

Variations in Community Exposure and Sensitivity to Tsunami Hazards in the State of Hawai'i

Hawai`i has experienced numerous destructive tsunamis and the potential for future events threatens the safety and economic well being of its coastal communities. Although tsunami-evacuation zones have been delineated, what is in these areas and how communities have chosen to develop within them has not been documented. A community-level...

Wood, Nathan; Church, Alyssia; Frazier, Tim; Yarnal, Brent
Variations in Community Exposure and Sensitivity to Tsunami Hazards in the State of Hawai'i; 2007; SIR; 2007-5208; Wood, Nathan; Church, Alyssia; Frazier, Tim; Yarnal, Brent

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Year Published: 2007

Effects of Agricultural Land-Use Changes and Rainfall on Ground-Water Recharge in Central and West Maui, Hawai`i, 1926-2004

Concern surrounding declines in ground-water levels and an increase in the chloride concentration of water pumped from wells in the Iao aquifer system on the Island of Maui has prompted an investigation into the long-term sustainability of current (2006) and future ground-water withdrawals. As part of this investigation, a water budget for central...

Engott, John A.; Vana, Thomas T.
Effects of Agricultural Land-Use Changes and Rainfall on Ground-Water Recharge in Central and West Maui, Hawai`i, 1926-2004; 2007; SIR; 2007-5103; Engott, John A.; Vana, Thomas T.

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Year Published: 2007

Effects of Ground-Water Withdrawal on Kaunakakai Stream Environmental Restoration Plan, Moloka`i, Hawai`i

The U.S. Army Corps of Engineers, in cooperation with the County of Maui Department of Public Works and Environmental Management, has proposed to construct 2.75 acres of shallow ponds and mudflats near the mouth of Kaunakakai Stream, Moloka`i, Hawai`i to restore habitat for the endangered native Hawaiian Stilt. Kaunakakai Stream is ephemeral...

Oki, Delwyn S.
Effects of Ground-Water Withdrawal on Kaunakakai Stream Environmental Restoration Plan, Moloka`i, Hawai`i; 2007; SIR; 2007-5128; Oki, Delwyn S.

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Year Published: 2007

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2006 to June 30, 2007

Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two stations, continuous streamflow data at three stations...

Young, Stacie T.M.; Jamison, Marcael T.J.
Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2006 to June 30, 2007; 2007; OFR; 2007-1213; Young, Stacie T. M.; Jamison, Marcael T. J.

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Year Published: 2007

Natural and Diverted Low-Flow Duration Discharges for Streams Affected by the Waiahole Ditch System, Windward O`ahu, Hawai`i

For nearly a century, the Waiahole Ditch System has diverted an average of approximately 27 million gallons per day of water from the wet, northeastern part of windward O`ahu, Hawai`i, to the dry, central part of the island to meet irrigation needs. The system intercepts large amounts of dike-impounded ground water at high altitudes (above...

Yeung, Chiu W.; Fontaine, Richard A.
Natural and Diverted Low-Flow Duration Discharges for Streams Affected by the Waiahole Ditch System, Windward O`ahu, Hawai`i; 2007; SIR; 2006-5285; Yeung, Chiu W.; Fontaine, Richard A.

Filter Total Items: 2,086
Color photograph of lava lake
May 7, 2021

Lava lake in Halema‘uma‘u - Kīlauea, May 7 2021

The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active, as seen in this view looking northwest. The active surface lava area continues to decrease in size, and activity is weaker, with only occasional localized surface foundering. Incandescent lava is confined to area between western fissure complex (left center) and the main island (lower right).

...
Color photograph of lava lake
May 6, 2021

Close-up view of active western portion of Halema‘uma‘u lava lake

This close-up view of the active western portion of the Halema‘uma‘u lava lake at the summit of Kīlauea was captured on Thursday, May 6 through the lens of a laser rangefinder used by HVO scientists to measure distances to features within the crater. HVO scientists observed that the area immediately surrounding the inlet to the lava lake (above-center) was slightly perched

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Color photograph of lava lake
May 6, 2021

Halema‘uma‘u lava lake, May 6, 2021

View of the active surface lava in the western portion of Halema‘uma‘u, at the summit of Kīlauea Volcano. The west vent (upper left) continues to erupt lava into the lava lake through an inlet near the base of the cone. The active lava lake surface area has decreased in size over the past two weeks since the northeast (right) and southwest (left) surface has been

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Color photograph of lava lake
May 5, 2021

Halema‘uma‘u eruptive activity on 05 May 2021

Lava continues to flow from the western vent (bottom left) into the lava lake at Halema‘uma‘u Crater at the summit of Kīlauea Volcano, Island of Hawai‘i. A portion of the active surface of the lava lake can be seen here with orange, incandescent lava between the west vent and the main island. This photograph was taken on Wednesday, March 5, 2021, at 12:37 p.m. HST from the

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On Friday, April 30, lava continued to erupt from the west vent in Halema‘uma‘u at the summit of Kīlauea Volcano
April 30, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—April 30, 2021

On Friday, April 30, lava continued to erupt from the west vent in Halema‘uma‘u at the summit of Kīlauea Volcano. Active surface lava (center of the photo) was limited to the center of the previously active lake surface, where the north (right) and south (left) sides have cooled and crusted over (appearing darker in the image). This photo was taken around 2 p.m. HST from

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Hiking along the rim of the 2018 collapse area at the summit of Kīlauea
April 30, 2021

View of Kīlauea summit eruption gas plume from southeast — April 30

While hiking along the rim of the 2018 collapse area at the summit of Kīlauea, HVO scientists visited a site to the southeast of Halema‘uma‘u known as Akanikōlea—a culturally-significant place that is featured in Hawaiian legends. While the lava lake from the ongoing eruption in Halema‘uma‘u is not visible from this vantage point, the gas plume from the eruption is (

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HVO scientists hiked along the closed Crater Rim Road on April 30th to retrieve acoustic (sound) sensors for a scientific study
April 30, 2021

View of Kīlauea's September 1982 lava flow lobe — April 30, 2021

HVO scientists hiked along the closed Crater Rim Road on April 30th to retrieve acoustic (sound) sensors for a scientific study. This section of the road was damaged by earthquake activity during the 2018 Kīlauea summit caldera collapse. This stretch of road traverses part of the September 1982 lava flow, visible as a lobe of black rock on the right of the road. Mauna Loa

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The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active
April 27, 2021

View of lava lake in Halema‘uma‘u—Kīlauea, April 27, 2021

The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active, as seen in this view looking north. Active surface lava is limited to the western (left) portion of the lake between the main island and the western fissure complex. The active lava surface area has decreased in size over the past week, but remains perched approximately 3 meters (10 ft) higher

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On Monday, April 26, 2021, lava continued to flow from the western vent into the active lava lake in Halema‘uma‘u Crater
April 26, 2021

View of Halema‘uma‘u lava lake from the west, April 26, 2021

On Monday, April 26, 2021, lava continued to flow from the western vent (bottom left) into the active lava lake (center) in Halema‘uma‘u Crater at the summit of Kīlauea Volcano. The active lava lake surface continues to shrink as areas on the north (upper left) and south (center right) sides cool and solidify. This photograph was taken at 1:03 p.m. HST from the west rim of

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A close-up view of the west vent spatter cones and lava lake inlet in Halema‘uma‘u Crater at the summit of Kīlauea Volcano
April 26, 2021

Close-up view of the west vent and inlet at Halema‘uma‘u

A close-up view of the west vent spatter cones (bottom left) and inlet where lava is entering the lava lake (center right) in Halema‘uma‘u Crater at the summit of Kīlauea Volcano. A piece of crust, that solidified near the inlet, broke off and was being transported away from the inlet. This photograph was taken on April 26, 2021, at 1:51 p.m. HST from the west rim of

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April 26, 2021

EarthShots — Satellite Images of Environmental Change

The US Geological Survey's Earth Resources Observation and Science Center, or "EROS" archive’s data from the LandSat satellites which have been in operation from 1972 to the present day. EarthShots presents environmental changes using Landsat images. 
 

Color photograph of lava lake surface
April 23, 2021

April 22, 2021- Close-up view of Halema‘uma‘u lava lake crusting-over

This zoomed-in photo of the far southwest end of the active lava lake within Halema‘uma‘u at Kīlauea's summit was captured on Thursday, April 22, and it illustrates the process by which parts of the lava lake become inactive. This area, which had seen substantial lava circulation as recently as last week, now has a stagnant pāhoehoe crust that sits 2–3 m (7–10 ft) lower

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Lava erupting from the west vent in Halema‘uma‘u crater emerged from a second source closer to the vents base
April 13, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 226 m (741 ft) deep this morning, April 13. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

USGS science for a changing world
April 9, 2021

The USGS recently published a data release that includes a three-dimensional model of Puʻuʻōʻō, on Kīlauea's East Rift Zone, and the collapse crater, constructed from aerial thermal images collected on 11 May 2018.  Structure-from-motion processing was used to create the model from the sequence of oblique images, and ground control using kinematic GPS was used to georegister the model.   

Color photograph of lava lake and crater wall
April 9, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 9. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

View of the Kīlauea summit lava lake from the west rim of Halema‘uma‘u crater on April 7, 2021
April 8, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 8. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

April 1, 2021, spectrogram recorded at station WRM, located near Halemaʻumaʻu at Kīlauea’s summit.
April 8, 2021

The USGS Hawaiian Volcano Observatory (HVO) uses dozens of seismometers to locate individual earthquakes and identify signals that are related to faulting and magma movement within our volcanoes.

Color photograph of lava lake
April 6, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 6. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Color photograph of lava flow
April 5, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 5. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

USGS science for a changing world
April 3, 2021

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.3 earthquake located beneath Mauna Loa's south flank on Saturday, April 3, at 11:15 a.m., HST. This earthquake was preceded by a magnitude-3.9 at approximately the same location on 11:02 a.m., HST.

Color photograph of volcanic vent
April 2, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 225 m (738 ft) deep this morning, April 2. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Color photograph of volcanic vent
April 1, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; Halema‘uma‘u west vent erupts lava into the lava lake, which was 224 m (735 ft) deep this morning, April 1. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear—monitor the eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Black and white photographs of lava lakes in crater
April 1, 2021

One of the most interesting aspects of the current activity in Halemaʻumaʻu is the occasional oozing of lava around the edges of the entire crater while the lava surface is rising. Has that phenomenon been reported before in any accounts of previous Kīlauea activity?