HVO Kilauea Status

Recent Kilauea Status Reports, Updates, and Information Releases

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Sunday, May 24, 2015 7:26 AM HST (Sunday, May 24, 2015 17:26 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Seismicity rates are currently normal beneath Kīlauea's summit and minor inflationary tilt has been observed starting early on May 24. At the East Rift Zone eruption site, surface flows continue to be active within about 8.6 km (5.3 mi) of Puʻu ʻŌʻō.

Summit Observations: Seismicity rates beneath Kīlauea's summit, upper East Rift Zone and Southwest Rift Zone were at normal, background levels during the past day. The summit tiltmeter network recorded deflationary tilt of the typical Halemaʻumaʻu source throughout the day on May 23, but is currently recording inflationary tilt, beginning just after midnight on May 24. Sulfur dioxide emission rates ranged between 3,800-8,500 tonnes/day for the week ending May 22.

Puʻu ʻŌʻō Observations: The tiltmeter on the north flank of Puʻu ʻŌʻō continues to show no significant tilt, and seismicity rates have been normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 360 tonnes/day when last measured on May 19, 2015.

June 27th Lava Flow Observations: Webcam images and satellite imagery continue to show surface flow activity from several breakouts in an area northeast Puʻu ʻŌʻō. All surface flows are occurring within 8.6 km (5.3 mi) of Puʻu ʻŌʻō.



Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Saturday, May 23, 2015 7:49 AM HST (Saturday, May 23, 2015 17:49 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Seismicity rates are currently normal beneath Kīlauea's summit and minor deflationary tilt has been observed starting early on May 23. At the East Rift Zone eruption site, surface flows continue to be active within about 8.6 km (5.3 mi) of Puʻu ʻŌʻō.

Summit Observations: Seismicity rates beneath Kīlauea's summit, upper East Rift Zone and Southwest Rift Zone were at normal, background levels during the past day. The summit tiltmeter network recorded inflationary tilt from the typical Halemaʻumaʻu source early on May 22, but is currently recording deflation, beginning just after midnight on May 23. Sulfur dioxide emission rates ranged between 3,800-8,500 tonnes/day for the week ending May 22.

Puʻu ʻŌʻō Observations: The tiltmeter on the north flank of Puʻu ʻŌʻō continues to show no significant tilt, and seismicity rates have been normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 360 tonnes/day when last measured on May 19, 2015.

June 27th Lava Flow Observations: Webcam images and satellite imagery continue to show surface flow activity from several breakouts in an area northeast Puʻu ʻŌʻō. All surface flows are occurring within 8.6 km (5.3 mi) of Puʻu ʻŌʻō.



Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Saturday, May 23, 2015 7:35 AM HST (Saturday, May 23, 2015 17:35 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Seismicity rates are currently normal beneath Kīlauea's summit and minor deflationary tilt has been observed starting early on May 23. At the East Rift Zone eruption site, surface flows continue to be active within about 8 km (5 mi) of Puʻu ʻŌʻō.

Summit Observations: Seismicity rates beneath Kīlauea's summit, upper East Rift Zone and Southwest Rift Zone were at normal, background levels during the past day. The summit tiltmeter network recorded inflationary tilt from the typical Halemaʻumaʻu source early on May 22, but is currently recording deflation, beginning just after midnight on May 23. Sulfur dioxide emission rates ranged between 3,800-8,500 tonnes/day for the week ending May 22.

Puʻu ʻŌʻō Observations: The tiltmeter on the north flank of Puʻu ʻŌʻō continues to show no significant tilt, and seismicity rates have been normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 360 tonnes/day when last measured on May 19, 2015.

June 27th Lava Flow Observations: Webcam images and satellite imagery continue to show surface flow activity from several breakouts in an area northeast Puʻu ʻŌʻō. All surface flows are occurring within 8.6 km (5.3 mi) of Puʻu ʻŌʻō.



Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Friday, May 22, 2015 6:48 AM HST (Friday, May 22, 2015 16:48 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Seismicity rates are currently normal beneath Kīlauea's summit and inflationary tilt has been observed starting early on May 22. At the East Rift Zone eruption site, surface flows continue to be active within about 8 km (5 mi) of Puʻu ʻŌʻō.

Summit Observations: Seismicity rates beneath Kīlauea's summit, upper East Rift Zone and Southwest Rift Zone were at normal, background levels during the past day. The summit tiltmeter network is recording inflationary tilt from the typical Halemaʻumaʻu source beginning just after midnight. Sulfur dioxide emission rates averaged 3,400-6,900 tonnes/day for the week ending May 12.

Puʻu ʻŌʻō Observations: The tiltmeter on the north flank of Puʻu ʻŌʻō continues to show no significant tilt, and seismicity rates have been normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 550 tonnes/day when last measured on May 11, 2015.

June 27th Lava Flow Observations: Webcam images and satellite imagery continue to show surface flow activity from several breakouts in an area northeast Puʻu ʻŌʻō. All surface flows are occurring within 8 km (5 mi) of Puʻu ʻŌʻō.



Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Thursday, May 21, 2015 8:38 AM HST (Thursday, May 21, 2015 18:38 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Seismicity rates are currently normal beneath Kīlauea's summit and minor deflationary tilt has been observed starting early on May 21. At the East Rift Zone eruption site, surface flows continue to be active within about 8 km (5 mi) of Puʻu ʻŌʻō.

Summit Observations: Seismicity rates beneath Kīlauea's summit, upper East Rift Zone and Southwest Rift Zone were at normal, background levels during the past day. The tiltmeter in the south caldera recorded a small decrease in tilt in a direction associated with magma accumulation in the Southwest Rift Zone. Other tiltmeters in the summit area were either flat, or recording minor deflationary tilt. Sulfur dioxide emission rates averaged 3,400-6,900 tonnes/day for the week ending May 12.

Puʻu ʻŌʻō Observations: The tiltmeter on the north flank of Puʻu ʻŌʻō continues to show no significant tilt, and seismicity rates have been normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 550 tonnes/day when last measured on May 11, 2015.

June 27th Lava Flow Observations: Webcam images and satellite imagery continue to show surface flow activity from several breakouts in an area northeast Puʻu ʻŌʻō. All surface flows are occurring within 8 km (5 mi) of Puʻu ʻŌʻō.



Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Wednesday, May 20, 2015 6:41 AM HST (Wednesday, May 20, 2015 16:41 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Seismicity rates are currently normal beneath Kīlauea's summit and minor inflationary tilt has been observed in the last 24 hours. At the East Rift Zone eruption site, surface flows continue to be active within about 8 km (5 mi) of Puʻu ʻŌʻō.

Summit Observations: Seismicity rates beneath Kīlauea's summit, upper East Rift Zone and Southwest Rift Zone were at normal, background levels during the past day. The tiltmeter in the south caldera recorded a small decrease in tilt in a direction associated with magma accumulation in the Southwest Rift Zone. Other tiltmeters in the summit area were either flat, or recording minor inflationary tilt from the area of Halemaʻumaʻu. Correlated with minor inflation, the summit lava lake level rose slightly as well. Sulfur dioxide emission rates averaged 3,400-6,900 tonnes/day for the week ending May 12.

Puʻu ʻŌʻō Observations: The tiltmeter on the north flank of Puʻu ʻŌʻō continues to show no significant tilt, and seismicity rates have been normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 550 tonnes/day when last measured on May 11, 2015.

June 27th Lava Flow Observations: Webcam images and satellite imagery continue to show surface flow activity from several breakouts in an area northeast Puʻu ʻŌʻō. All surface flows are occurring within 8 km (5 mi) of Puʻu ʻŌʻō.



Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Tuesday, May 19, 2015 8:58 AM HST (Tuesday, May 19, 2015 18:58 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Seismicity rates are currently normal beneath Kīlauea's summit and a slight decrease in tilt has been observed on summit tiltmeters. At the East Rift Zone eruption site, surface flows continue to be active within about 8 km (5 mi) of Puʻu ʻŌʻō.

Summit Observations: Seismicity rates beneath Kīlauea's summit and Southwest Rift Zone were at normal, background levels during the past day, and tiltmeters recorded a small decrease in tilt in a direction associated with magma accumulation in the Southwest Rift Zone. The summit lava lake level rose slightly to about 40 meters (130 feet) below the original crater floor. This level is 48 meters (155 feet) below the new Overlook crater rim. Sulfur dioxide emission rates averaged 3,400-6,900 tonnes/day for the week ending May 12.

Puʻu ʻŌʻō Observations: The tiltmeter on the north flank of Puʻu ʻŌʻō continues to show no significant tilt, and seismicity rates have been normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 550 tonnes/day when last measured on May 11, 2015.

June 27th Lava Flow Observations: Webcam images and satellite imagery continue to show surface flow activity from several breakouts in an area northeast Puʻu ʻŌʻō. All surface flows are occurring within 8 km (5 mi) of Puʻu ʻŌʻō.




Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Monday, May 18, 2015 8:57 AM HST (Monday, May 18, 2015 18:57 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: There has been no significant change in tilt recorded on tiltmeters at Kīlauea's summit over the past 24 hours. Seismicity rates beneath the summit are elevated over normal levels, but have decreased in the past several days. At the East Rift Zone eruption site, surface flows continue to be active within about 8 km (5 mi) of the Puʻu ʻŌʻō vent.

Summit Observations: No significant change in tilt was detected by tiltmeters on Kīlauea's summit over the past 24 hours. In the summit area, seismicity rates continue to be elevated over normal levels, but have decreased over the past several days. The summit lava lake level is unchanged from yesterday, at about 45-50 meters (150-165 feet) below the original crater floor. Sulfur dioxide emission rates averaged 3,400-6,900 tonnes/day for the week ending May 12.

Puʻu ʻŌʻō Observations: Only small changes in tilt were detected on the tiltmeter on the northern flank of Puʻu ʻŌʻō in the past day, and seismicity rates were normal. The sulfur dioxide emission rate from all East Rift Zone vents was about 550 tonnes/day when last measured on May 11, 2015.

June 27th Lava Flow Observations: Webcam images continue to show surface flow activity in a region within 8km (5 mi) and northeast of Puʻu ʻŌʻō.




Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Sunday, May 17, 2015 9:13 AM HST (Sunday, May 17, 2015 19:13 UTC)


This report on the status of Kilauea volcanic activity was prepared by the USGS Hawaiian Volcano Observatory (HVO). All times are Hawai`i Standard Time.

KILAUEA VOLCANO (VNUM #332010)
19°25'16" N 155°17'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Tiltmeters at Kīlauea's summit recorded small increases in tilt over the past day and are currently holding steady. Seismicity rates beneath the summit are still elevated over normal levels, but have decreased in the past two days. At the East Rift Zone eruption site, surface flows continue to be active within about 8 km (5 mi) of the Puʻu ʻŌʻō vent.

Summit Observations: Rates of tilting recorded at Kīlauea's summit continued to slow down and have leveled off over the last 24 hours. Seismicity rates in the summit area and upper southwest rift zone are still elevated above normal levels, but have decreased in the past two days. The summit lava lake level held steady at about 50 meters (165 feet) below the original crater floor. Sulfur dioxide emission rates averaged 3,400-6,900 tonnes/day for the week ending May 12.

Puʻu ʻŌʻō Observations: No significant tilt was recorded at the tiltmeter on the northern flank of Puʻu ʻŌʻō in the past day, and seismicity rates were normal. Nighttime incandescence over the western collapsed pit crater remains visible in webcam images, suggesting the continued presence of lava. The sulfur dioxide emission rate from all East Rift Zone vents was about 550 tonnes/day when last measured on May 11, 2015.

June 27th Lava Flow Observations: Webcam images continue to show surface flow activity in a region within 8km (5 mi) and northeast of Puʻu ʻŌʻō.




Daily Activity Summary also available by phone: (808) 967-8862

Webcam images: http://hvo.wr.usgs.gov/cams/

Photos/Video: http://hvo.wr.usgs.gov/multimedia

Lava Flow Maps: http://hvo.wr.usgs.gov/maps/

Definitions of terms used in update: http://hvo.wr.usgs.gov/kilauea_update/definitions.pdf

Note about sulfur dioxide emission rate: http://hvo.wr.usgs.gov/volcanowatch/view.php?id=207
(Explains how HVO's method of measuring SO2 changed in 2014 and the effects of that change on reported estimates of emission rates.)

MORE INFORMATION

Overview of Kīlauea summit (Halemaʻumaʻu) and East Rift Zone (Puʻu ʻŌʻō) eruptions:
http://hvo.wr.usgs.gov/kilauea_update/background.pdf

Summary of volcanic hazards from Kīlauea eruptions:
http://hvo.wr.usgs.gov/kilauea_update/hazards.pdf

Recent Earthquakes in Hawaii (map and list):
http://hvo.wr.usgs.gov/seismic/volcweb/earthquakes/

Explanation of Volcano Alert Levels and Aviation Color Codes:
http://volcanoes.usgs.gov/activity/alertsystem/index.php
http://pubs.usgs.gov/fs/2006/3139/

Lava viewing information:
http://hvo.wr.usgs.gov/kilauea_update/viewing.pdf

HVO Contact: askHVO@usgs.gov


The Hawaiian Volcano Observatory is one of five volcano observatories within the U.S. Geological Survey and is responsible for monitoring volcanoes and earthquakes in Hawai`i.



Update Archive

Older updates can be found using the HVO Alert Archive Search.

New Update Format

For more information about the Volcano Alert Level and Aviation Color Code, please see the U.S. Geological Survey's Alert Notification System for Volcanic Activity Fact Sheet (pdf) or the USGS Volcanic Activity Alert-Notification System web page.