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Filter Total Items: 66
Close-up photograph of stem, leaves and flower buds of haha plant
Date Published: June 6, 2018
Status: Active

Using Plant Physiologic Responses to Environmental Conditions to Improve Species and Habitat Management in Hawaii

Recent studies show that past and ongoing environmental changes have been substantial and have likely already affected conservation efforts in Hawai‘i. Much of the state has experienced substantial drying, including decreases in mean annual precipitation since the 1920s, longer rainless periods, and decreasing stream flow. Temperatures have been increasing in Hawai‘i for the last 40 years,...

Photo of Bird Bands in a Variety of Sizes and Types
Date Published: May 1, 2018
Status: Active

Bird Banding Laboratory

The Bird Banding Laboratory (BBL) is an integrated scientific program established in 1920 supporting the collection, archiving, management and dissemination of information from banded and marked birds in North America.  This information is used to monitor the status and trends of resident and migratory bird populations. Because birds are good indicators of the health of the environment, the...

coastal vulnerability of sea-level rise map
Date Published: January 18, 2018
Status: Active

National Assessment of Coastal Vulnerability to Sea Level Rise

The original national coastal vulnerability index (CVI) assessment was motivated by expected accelerated sea-level rise (SLR) and the uncertainty in the response of the coastline to SLR. This research was conducted between 1999 and 2001, and is currently being updated using new data sources and methodology. This original study was part of the ...

Oblique aerial photograph looking to the southwest along the southern end of Cedar Island, Virginia
Date Published: January 18, 2018
Status: Active

Long-Term Coastal Change

Goals of this task include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems.

Cliff erosion is a common storm-induced hazard along the West Coast.
Date Published: January 17, 2018
Status: Active

National Assessment of Coastal Change Hazards

Research to identify areas that are most vulnerable to coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise.

Kawela ridge, Moloka'i, Hawaii
Date Published: January 11, 2018
Status: Completed

Studies on the Rapidly Eroding Reef

This study focuses on assessing changes in vegetation cover and composition inside and outside a fenced exclosure within the USGS Ridge-to-Reef study area on the island of Moloka‘i. This information will be delivered to federal, state, and private land managers who are trying to determine best management practices to reduce erosion and sediment runoff from this dry habitat which has been...

Rufus fantail nestlings
Date Published: December 29, 2017
Status: Active

Pacific Island Bird Survey Design and Data Analysis

Abundance data are collected for bird populations throughout the Pacific Islands by numerous federal, state, university, and non-profit organizations. In order to ensure data are standardized and available to researchers throughout the region, interagency bird databases have been created and continue to be used. These databases contain more than a million compiled, proofed, and standardized...

Koa flowers
Date Published: December 27, 2017
Status: Completed

Adaptation in Montane Plants

Montane plant communities in widely separated intact natural environments of the world have responded to changes in precipitation and temperature regimes by shifting both margins and core distributional ranges upward in elevation.  Reduced evapotranspiration rates in cooler climate zones at higher elevation may compensate for less precipitation and higher temperatures within species’ former...

Trained scent-detection dog and dog trainer at work in a taro field at Hanalei National Wildlife Refuge
Date Published: November 21, 2017
Status: Active

Efficacy of Avian Botulism Surveillance and Mitigation Using Detection Canines

Avian botulism causes waterbird mortality in Hawai‘i's wetlands and elsewhere. We will evaluate using trained scent-detection canines (sniffer dogs) as a new tool to survey for the presence of avian botulism. Biologists will compare variables influencing detection probability and detection rates with traditional search methods. The pilot study will test the feasibility of this approach as a...

Cliffs meet the ocean in the North Kohala District of Hawaii
Date Published: September 18, 2017
Status: Active

Webinar: Rainfall Variability and Drought in the Hawaiian Islands

View this webinar to learn about the state of the science on drought in Hawai'i.

Contacts: Abby Frazier
Axis deer bounds through a grassy field
Date Published: August 11, 2017
Status: Completed

Invasive Mammals of the Pacific

The terrestrial biota of the Central Pacific is primarily defined by its degree of isolation.  At the center lies the Hawaiian Archipelago, which is more than 3,200 km from any continental land mass.  After tens of millions of years of evolutionary isolation from all mammals except bats, islands of the Central Pacific were quite suddenly besieged by a number of alien rodents, carnivores and...

Maui greenswords
Date Published: June 27, 2017

Hawai‘i Carbon Storage and Greenhouse Gas Flux Assessment

In recent years, the U.S. Geological Survey has been conducting a national biologic carbon sequestration assessment in the conterminous U.S.  The assessment is designed to meet the requirements of the Energy Independence and Security Act of 2007, which calls for coverage of all 50 states and all ecosystems (including forests, grasslands, wetlands, agricultural lands, and rivers, lakes, and...

Filter Total Items: 60
USGS
January 1, 2019

Observations of bleached coral were documented by scuba divers along pre-determined transects and are presented here in comma-separated format. Included in the table are coral species observed, colony size, size of bleached area on colony, and seawater temperature.

Map of the Pacific Ocean and surrounding continents with boxes drawn around areas to show study locations.
January 1, 2019

This data release provides flooding extent polygons (flood masks) and depth values (flood points) based on wave-driven total water levels for 22 locations within the States of Hawaii and Florida, the Territories of Guam, American Samoa, Puerto Rico, and the U.S. Virgin Islands, and the Commonwealth of the Northern Mariana Islands. For each of the 22 locations there are eight associated flood mask

USGS
January 1, 2019

Projected wave climate trends from WAVEWATCH3 model output were used as input for nearshore wave models (for example, SWAN) for the main Hawaiian Islands to derive data and statistical measures (mean and top 5 percent values) of wave height, wave period, and wave direction for the recent past (1996-2005) and future projections (2026-2045 and 2085-2100).
Three-hourly global climate model (GCM) win

USGS
January 1, 2019

Conductivity-Temperature-Depth (CTD) profile data were collected along transects across study areas of west and east Hawaii Island between 2010 and 2014. Measurements were made over a range of tide and weather conditions and help characterize the spatial extent and variability in estuarine conditions across the reef when grouped by 1 to 2-hour survey period or by season. Sites of cold and warm gr

USGS
January 1, 2019

Time-series data of water temperature were collected at 33 locations along the west coast of the Island of Hawaii, including within Kaloko-Honokohau National Historical Park (KAHO), and Puu o Honaunau National Historical Park (PUHO) between 2010 and 2013 in nearshore coral reef and anchialine pool settings. Temperature sensors were attached to fossil limestone, rock or dead coral within otherwise

USGS
January 1, 2019

Strontium isotope ratios of historical Kīlauea summit and rift lavas were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S. Geological Survey (USGS) in Denver. There were 151 analyses of 49 samples obtained from the field, the collections of the USGS Hawaiian Volcano Observatory (HVO), and the Smithsonian Institution. Data for

USGS
January 1, 2019

Strontium isotope ratios of lavas from Hawaiʻi were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S. Geological Survey (USGS) in Denver. There were at total of 427 analyses of samples obtained from the field, the collections of the USGS Hawaiian Volcano Observatory (HVO), the University of Hawaiʻi, and the Smithsonian Ins

USGS
January 1, 2019

Time-series data of water level, water temperature, and salinity were collected at 10 locations along west Hawaii Island between 2010 and 2011 in nearshore coral reef settings. Conductivity-temperature-depth sensors were attached to fossil limestone, rock, or dead coral within otherwise healthy coral reef settings spanning water depths of 8 to 23 ft. Continuous measurements were made every 10 or

Laysan albatross adults and chicks
June 18, 2018

This collection of nine datasets covers Midway Atoll and Laysan Island in the Northwestern Hawaiian Islands, and was created to help estimate the impacts of the March 11, 2011 tsunami event on avifauna in the Northwestern Hawaiian Islands. 

Aerial photograph of Laysan Island, Hawaii
June 18, 2018

This data release consists of two ESRI geodatabases that store inundation areas for various future scenarios of sea-level rise, groundwater rise, and storm waves for Laysan Island and Midway Atoll in the Northwestern Hawaiian Islands.

Map of Submerged Lands
April 4, 2018

The USGS Coastal and Marine Geology Program (CMGP) Internet Map Server is an interactive mapping service which allows the user to explore and download GIS data sets published by CMGP.

Akepa
March 23, 2018

We quantified the availability of breeding habitat of the endangered Hawaiian Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros polymorpha) trees but birds commonly occur in short stature trees that presumably do not have any natural cavities because of their polyploidal (many-branched) structure.

Filter Total Items: 288
Map of Kīlauea East Rift Zone lava flows and fissures
July 16, 2018

Map as of 1:00 p.m. HST, July 16, 2018

Thermal map of fissure system and lava flows
July 14, 2018

This thermal map shows the Fissure 8 flow as of 6 am on Saturday, July 14

Thermal map of fissure system and lava flows
July 12, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Thursday, July 12

Map of Kīlauea East Rift Zone lava flows and fissures
July 12, 2018

Map as of 3:00 p.m. HST, July 12, 2018

Map of Kīlauea East Rift Zone lava flows and fissures
July 11, 2018

Map as of 1:00 p.m. HST, July 11, 2018

Thermal map of fissure system and lava flows
July 10, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Tuesday, July 10.

Map of Kīlauea East Rift Zone lava flows and fissures
July 10, 2018

Map as of 12:00 p.m. HST, July 10, 2018

Thermal map of fissure system and lava flows
July 9, 2018

This thermal map shows the fissure system and lava flows as of 2 pm on Monday, July 9

Map of Kīlauea East Rift Zone lava flows and fissures
July 9, 2018

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

Thermal map of fissure system and lava flows
July 8, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Sunday, July 8.

Thermal map of fissure system and lava flows
July 6, 2018

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

Map showing lower East Rift Zone lava flows and fissures
July 6, 2018

Map as of 12:00 p.m. HST, July 6, 2018

Filter Total Items: 108
Publication Thumbnail
Year Published: 2013

Freshwater and drought on Pacific Islands

Izuka, Scot K.; Keener, Victoria
Freshwater and drought on Pacific Islands; 2013; Book chapter; Book; Climate Change and Pacific Islands: Indicators and Impacts: Report for the 2012 Pacific Islands Regional Climate Assessment; Scot K Izuka; Keener, Victoria

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Year Published: 2013

Trends and shifts in streamflow in Hawaii, 1913-2008

This study addresses a need to document changes in streamflow and base flow (groundwater discharge to streams) in Hawai'i during the past century. Statistically significant long-term (1913-2008) downward trends were detected (using the nonparametric Mann-Kendall test) in low-streamflow and base-flow records. These long-term downward trends are...

Bassiouni, Maoya; Oki, Delwyn S.
Trends and shifts in streamflow in Hawaii, 1913-2008; 2013; Article; Journal; Hydrological Processes; Bassiouni, Maoya; Oki, Delwyn S.

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Year Published: 2012

Availability and distribution of low flow in Anahola Stream, Kauaʻi, Hawaiʻi

Anahola Stream is a perennial stream in northeast Kauaʻi, Hawaiʻi, that supports agricultural, domestic, and cultural uses within its drainage basin. Beginning in the late 19th century, Anahola streamflow was diverted by Makee Sugar Company at altitudes of 840 feet (upper intake) and 280 feet (lower intake) for irrigating sugarcane in the Keālia...

Cheng, Chui Ling; Wolff, Reuben H.
Availability and distribution of low flow in Anahola Stream, Kauaʻi, Hawaiʻi; 2012; SIR; 2012-5264; Cheng, Chui Ling; Wolff, Reuben H.

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Year Published: 2012

Low-flow characteristics of streams under natural and diversion conditions, Waipiʻo Valley, Island of Hawaiʻi, Hawaiʻi

Over the past 100 years, natural streamflow in Waipiʻo Valley has been reduced by the transfer of water out of the valley by Upper and Lower Hāmākua Ditches. The physical condition and diversion practices along the two ditch systems have varied widely over the years, and as a result, so have their effects on natural streamflow in Waipiʻo...

Fontaine, Richard A.
Low-flow characteristics of streams under natural and diversion conditions, Waipiʻo Valley, Island of Hawaiʻi, Hawaiʻi; 2012; SIR; 2011-5118; Fontaine, Richard A.

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Year Published: 2012

Development of invertebrate community indexes of stream quality for the islands of Maui and Oahu, Hawaii

In 2009-10 the U.S. Geological Survey (USGS) collected physical habitat information and benthic macroinvertebrates at 40 wadeable sites on 25 perennial streams on the Island of Maui, Hawaiʻi, to evaluate the relations between the macroinvertebrate assemblages and environmental characteristics and to develop a multimetric invertebrate community...

Wolff, Reuben H.

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Year Published: 2012

Measurements of seepage losses and gains, East Maui Irrigation diversion system, Maui, Hawaiʻi

The U.S. Geological Survey conducted a field study from March to October 2011 to identify ditch characteristics and quantify seepage losses and gains in the East Maui Irrigation (EMI) diversion system, east Maui, Hawaiʻi. The EMI diversion system begins at Makapipi Stream in the east and ends at Māliko Gulch in the west. It consists of...

Cheng, Chui Ling
Measurements of seepage losses and gains, East Maui Irrigation diversion system, Maui, Hawaiʻi; 2012; OFR; 2012-1115; Cheng, Chui Ling

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Year Published: 2012

Sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi

Data from streamflow/sediment gages and measurements of changes in channel-bed sediment storage were gathered between October 1, 2007, and September 30, 2010, to assess the sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi. Streamflow from the watershed averaged 33 cubic feet per second during the study period, with...

Izuka, Scot K.
Sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi; 2012; SIR; 2012-5085; Izuka, Scot K.

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Year Published: 2012

Groundwater availability in the Lahaina District, west Maui, Hawai'i

Most of the public water supply in the Lahaina District, west Maui, Hawai'i, is pumped from a freshwater lens in volcanic rocks. Because of population growth, groundwater withdrawals from wells in this area are expected to increase from about 5.8 million gallons per day in 2007 to more than 11 million gallons per day by 2030. Currently (2011), the...

Gingerich, Stephen B.; Engott, John A.
Groundwater availability in the Lahaina District, west Maui, Hawai'i; 2012; SIR; 2012-5010; Gingerich, Stephen B.; Engott, John A.

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Year Published: 2012

Numerical simulation of flow in deep open boreholes in a coastal freshwater lens, Pearl Harbor Aquifer, O‘ahu, Hawai‘i

The Pearl Harbor aquifer in southern O‘ahu is one of the most important sources of freshwater in Hawai‘i. A thick freshwater lens overlays brackish and saltwater in this coastal aquifer. Salinity profiles collected from uncased deep monitor wells (DMWs) commonly are used to monitor freshwater-lens thickness. However, vertical flow in...

Rotzoll, Kolja
Numerical simulation of flow in deep open boreholes in a coastal freshwater lens, Pearl Harbor Aquifer, O‘ahu, Hawai‘i; 2012; SIR; 2012-5009; Rotzoll, Kolja

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Year Published: 2011

From ridge to reef—linking erosion and changing watersheds to impacts on the coral reef ecosystems of Hawai‘i and the Pacific Ocean

Coral reef ecosystems are threatened by unprecedented watershed changes in the United States and worldwide. These ecosystems sustain fishing and tourism industries essential to the economic survival of many communities. Sediment, nutrients, and pollutants from watersheds are increasingly transported to coastal waters, where these contaminants...

Stock, Jonathan D.; Cochran, Susan A.; Field, Michael E.; Jacobi, James D.; Tribble, Gordon
From ridge to reef—linking erosion and changing watersheds to impacts on the coral reef ecosystems of Hawai‘i and the Pacific Ocean; 2011; FS; 2011-3049; Stock, Jonathan D.; Cochran, Susan A.; Field, Michael E.; Jacobi, James D.; Tribble, Gordon

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Year Published: 2011

A water-budget model and assessment of groundwater recharge for the Island of Hawaiʻi

Concern surrounding increasing demand for groundwater on the Island of Hawaiʻi, caused by a growing population and an increasing reliance on groundwater as a source for municipal and private water systems, has prompted a study of groundwater recharge on the island using the most current data and accepted methods. For this study, a daily water...

Engott, John A.
A water-budget model and assessment of groundwater recharge for the Island of Hawaiʻi; 2011; SIR; 2011-5078; Engott, John A.

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Year Published: 2011

Potential effects of roadside dry wells on groundwater quality on the Island of Hawai'i-Assessment using numerical groundwater models

Widespread use of dry wells to dispose of roadside runoff has raised concern about the potential effects on the quality of groundwater on the Island of Hawai‘i. This study used semi-generic numerical models of groundwater flow and contaminant transport to assess the potential effect of dry wells on groundwater quality on the Island of Hawai...

Izuka, Scot K.
Potential effects of roadside dry wells on groundwater quality on the Island of Hawai'i-Assessment using numerical groundwater models; 2011; SIR; 2011-5072; Izuka, Scot K.

Filter Total Items: 1,461
Sulfur dioxide concentration - Kīlauea Summit - Past Month
December 31, 2019

Sulfur dioxide concentration - Kīlauea Summit - Past Month

Sulfur dioxide concentration in ambient air - Kīlauea Summit - Past Month. HRSDH raw data SO2.

Sulfur dioxide concentration - Kīlauea Summit - Past Month
December 31, 2019

Sulfur dioxide concentration - Kīlauea Summit - Past Month

Sulfur dioxide concentration in ambient air - Kīlauea Summit - Past Month. HRPKE raw data SO2.

September 27, 2019

Water appears in Halemaʻumaʻu - Kīlauea Volcano

USGS Hawaiian Volcano Observatory scientists Matt Patrick and Jim Kauahikaua talk about the water that appeared at the bottom of Halemaʻumaʻu, a crater at the summit of Kīlauea Volcano, in July 2019 and continues to rise today. They address why it appeared, how it’s monitored, and its potential hazards.
 

view looking north across Mauna Loa's summit caldera
September 8, 2019

early morning view looking north across Moku‘āweoweo

An early morning view looking north across Moku‘āweoweo, Mauna Loa's summit caldera, from a spot near the summit cabin on the volcano's south caldera rim. Frost covered much of the caldera floor that was still shadowed, and weak steaming issued from the usual areas. Overall, there were no significant changes observed at the summit. The 1940 and 1949 cones are visible in

...
pond of water in Halema‘uma‘ crater
August 18, 2019

Water pond in Halema‘uma‘u 8-18-19

Water pond in Halema‘uma‘u August 18, 2019. The water level continues to slowly rise in Halema‘uma‘u, drowning many of the small rocks that were previously exposed in the center of the pond. Ripples across the water surface were evident today. The color of the water ranged from semi-translucent blue to opaque green-yellow in the western part of the pond.

Volcano crater
August 11, 2019

Aerial view of the Halema‘uma‘u water pond

The ponded water at the bottom of Halema‘uma‘u has continued to slowly rise. This wide view shows much of Halema‘uma‘u and the fumaroles on the upper walls of the pit.

August 9, 2019

Close-Up of Ponded Water at Halema`uma`u

This video shows a close-up of the ponded water at the bottom of Halema'uma'u. Yesterday, the separate ponds joined into a single elongate pond. The water level has continued to slowly rise.

What does water in Halema‘uma‘u mean
August 8, 2019

What does water in Halema‘uma‘u mean

These images look east at the pond within Halema‘uma‘u on August 8 and 14, 2019. The pond widened mainly toward the south (right). The north-south width of the pond on August 14 was about 32 m (105 ft), about 10 m (35 ft) wider than on August 8. The pond has widened and deepened slowly and steadily rate since measurements began on August 3.

HVO now tracking ponds of water, not lava, at Kīlauea's summit
August 7, 2019

HVO now tracking ponds of water, not lava, at Kīlauea's summit

A telephoto view of the ponded water at the bottom of Halema‘uma‘u on August 7, 2019. For scale, the largest pond is about 15 meters (50 feet) in diameter.

August 4, 2019

August 4 field observations of Halema‘uma‘u

This video shows steaming from the main pond of water at the bottom of Halema‘uma‘u as captured on Sunday, August 4. Two smaller areas of ponded water were present a short distance east of this spot. Thermal images indicate that the water surface is roughly 70 degrees Celsius (158 degrees Fahrenheit). USGS video by M. Patrick, 08-04-2019.

Aerial view of Halema‘uma‘u at the summit of Kīlauea
August 1, 2019

Aerial view of Halema‘uma‘u at the summit of Kīlauea

Aerial view of Halema‘uma‘u at the summit of Kīlauea taken during a USGS Hawaiian Volcano Observatory helicopter overflight on August 1, 2019. The small green patch visible at the bottom of Halema‘uma‘u is a new pond forming at the lowest point of the crater. The pond is at about 525 m (about 1722 ft) elevation.

Halema‘uma‘u taken during a helicopter lidar survey on July 25, 2019
July 25, 2019

Halema‘uma‘u taken during a helicopter lidar survey on July 25, 2019

Telephoto views of water in the bottom of Halema‘uma‘u taken during a helicopter lidar survey on July 25, 2019 (left), when the pond was first observed, and a USGS overflight on August 1, 2019 (right). The pond grew slightly in size and depth between the two dates; an "X" marks the same rock in both photos for comparison. Left photo courtesy of Ron Chapelle, Quantum

...
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routine inspection of a UAS system prior to a flight
June 6, 2019

The Hawaiian Volcano Observatory (HVO) is no rookie when it comes to using flight to assist with monitoring Hawaiian volcanoes. Helicopters and fixed-wing aircraft have transported HVO volcanologists for decades, giving them access for visual and thermal observations, equipment maintenance, and other geophysical and geochemical measurements.

100-year flood areas Maui, Hawaii
May 31, 2019

Coral reefs provide flood protection, new Aleutian tsunami evidence, sea turtle scientists head back to the field after Hurricane Michael, and more in this April-May 2019 issue of Sound Waves.

Kīlauea that will be covered by a helicopter lidar survey in June 2019
May 30, 2019

Since the end of 2018's volcanic activity, USGS Hawaiian Volcano Observatory scientists have wanted to resurvey Kīlauea Volcano's ground surface to document changes brought about by the Puna eruption and summit collapse. Doing so would allow us to more accurately answer questions about the total volumes of erupted lava and summit subsidence that occurred last summer. 

lava fountain
May 23, 2019

May 24, 2019, is a notable date in Kīlauea Volcano's history. It is the one-year anniversary of several key events in the 2018 Kīlauea eruption, most notably, the reactivation of fissure 8 with intermittent spattering while fissures 7 and 21 were producing two ‘a‘ā flows.

USGS
May 22, 2019

This GIS dataset shows the evolution of the "June 27th" lava flow (episode 61e of the Pu‘u ‘Ō‘ō eruption) that was active from June 27, 2014, to June 8, 2016.

Students from the Teaching Through Technology (T3) Alliance
May 16, 2019

During the 2018 eruption of Kīlauea Volcano, when fissures erupted and lava flowed in the lower East Rift Zone (LERZ), many Puna residents were displaced from their homes. We, as a community, watched from the sidelines as the eruption went on, helpless in averting the course of nature.

Ash rises above Halema‘uma‘u within Kīlauea's summit caldera
May 9, 2019

A year ago, USGS Hawaiian Volcano Observatory scientists and Island of Hawai‘i residents were in the throes of an historically unprecedented series of events for Kīlauea.

11:47 a.m. HST. Scientist measures the surface temperature of a cra...
May 8, 2019

The team at the U.S. Geological Survey Hawaiian Volcano Observatory is one of several finalists nominated for the 2019 Service to America Medals.

A long skinny core section of mud with a sandy layer in the middle of it lays on the marsh grass near where the core was taken.
May 3, 2019

In a comprehensive survey of Hawaiian tsunami deposits, USGS scientists from the USGS Pacific Coastal and Marine Science Center and collaborators found evidence for a widespread tsunami striking the islands between 1250 and 1450 CE.

field crews of Hawaiian Volcano Observatory
May 2, 2019

With the one-year anniversary of the onset of Kīlauea Volcano's 2018 lower East Rift Zone eruption upon us, USGS Hawaiian Volcano Observatory (HVO) staff, like many Hawai‘i residents, are reflecting on this historic event. 

Preview image of timelapse sequence at Mauna Loa's summit
April 29, 2019

This timelapse sequence of webcam images over a 24-hour period shows a typical day at the summit of Mauna Loa. 

USGS
April 27, 2019

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake on Saturday, April 27, 2019, at 5:26 p.m. HST.

Filter Total Items: 53