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Kilauea (Big Island) Volcano Eruption - Jan, Jun, and Sept 2023 Activity

Kilauea (Big Island) Volcano Eruption - Jan, Jun, and Sept 2023 Activity

Old Feb 15, 2023, 3:19 am
  #16  
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More of the overflow activity on Kilauea from different webcams:

KWCam:






V1Cam:










A big part of the challenge with shots from the webcams is the effects of weather as well as lighting and most volcanic material is black or gray - so needing to find the right times of day to actually have a given webcam show visually the changes and activity going on.

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Old Feb 16, 2023, 1:07 am
  #17  
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HVO's images of shifting vent activity:



Caption:
A close up of the small lava fountain at the central vent in Halemaumau, at the summit of Kīlauea. USGS photo by M. Patrick.


Caption:
​​​​​​​The eruption in Halemaumau, at the summit of Kīlauea, continues. Over the past week, the main source of lava effusion has shifted from the large eastern lake (right side of image) towards the smaller lake in the center of the crater (left side of image). This central vent has supplied lava towards the east that has poured into the eastern lake basin. The small fountain within the eastern lake has also shown renewed vigor in recent days. USGS photo by M. Patrick.
Note: above photos link to the full resolution shots (6000 x 4000) since they are too big for FT to ingest.

​​​​​​​David
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Old Feb 18, 2023, 1:06 pm
  #18  
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Lava lake activity at Kilauea (February 14, 2023):


This video provides a sense of scale WRT the absolute size of Kilauea's caldera and then how small/large the current lava fountains are - as well as how melted rock heated to over 600C behaves like water.

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Old Feb 19, 2023, 6:41 pm
  #19  
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Well, checking in on the webcams this weekend has been frustrating given the amount of rain and subsequent steam clouds generated at the summit:

B1cam:


KWcam:






S1cam:


V1cam:




And, since there wasn't much to see with the steam and atmospheric clouds, here's the PGcam from the LERZ - early AM just before dawn and an afternoon shot:



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Old Feb 20, 2023, 10:14 pm
  #20  
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Big Island Video News (https://www.bigislandvideonews.com/) put together some video and narration WRT the eruption. Looks like the video comes from the NPS.


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Old Feb 23, 2023, 11:41 pm
  #21  
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Lessening:

Alert Level: WATCH, Color Code: ORANGE
2023-02-23 19:01:31 UTC

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Thursday, February 23, 2023, 9:01 AM HST (Thursday, February 23, 2023, 19:01 UTC)

KILAUEA (VNUM #332010)
1925'16" N 15517'13" W, Summit Elevation 4091 ft (1247 m)

Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: The summit eruption of Kīlauea Volcano, within Halemaʻumaʻu crater, continues to be greatly diminished over the past 3 days. All recent eruptive activity has been confined to the crater. No significant changes have been observed in either rift zone.

Halemaʻumaʻu Lava Lake Observations: Eruption of lava on the Halemaʻumaʻu crater floor continues to be greatly diminished over the past 3 days. The eastern and central vents are not erupting. The western lake in the basin of the 2021–22 lava lake remains active but with weak lava flows. Very little lava is circulating within the lake, which is mostly crusted over with intermittent crustal overturns. The reduction in activity is related to the larger deflationary tilt drop that began in the early morning of February 17. Tilt is presently on a new deflationary trend over the past 24 hours. Surface eruptive activity is expected to resume when the summit re-inflates to the levels observed in the prior week. A live-stream video of the western lava lake is available at: https://www.youtube.com/usgs/live.

Summit Observations: Over the past 3 days summit tiltmeters showed small scale deflation/inflation cycles but have not returned to the levels seen prior to Feberuary 17th. Volcanic tremor has dropped slightly but remains above background levels. A sulfur dioxide (SO2) emission rate of approximately 2,000 tonnes per day (t/d) was measured on February 13, 2023.
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Old Feb 26, 2023, 11:08 am
  #22  
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Some webcam shots:

KWcam:


B1cam:


V1cam:



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Old Mar 6, 2023, 12:33 am
  #23  
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Even compared to last week, the latest webcam shots are showing that the current eruption is basically over:

KWcam:






F1cam:




S1cam:





V1cam:






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Old Mar 8, 2023, 11:08 am
  #24  
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Kilauea's not so active again:

Alert Level: WATCH, Color Code: ORANGE
2023-03-07 18:30:51 UTC

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Tuesday, March 7, 2023, 8:30 AM HST (Tuesday, March 7, 2023, 18:30 UTC)

KILAUEA (VNUM #332010)
1925'16" N 15517'13" W, Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: The summit eruption of Kīlauea Volcano, within Halemaʻumaʻu crater, has paused. Lava is no longer flowing on the crater floor, where all recent eruptive activity has been confined. No significant changes have been observed along either of the volcano's rift zones.

Halemaʻumaʻu Crater Observations: Yesterday morning, small ooze-outs of lava were flowing sluggishly in the footprint of the inactive western lava lake, within the basin that remained from the end of the 2021–2022 eruption. Ooze-out activity diminished in the afternoon, and today no active lava has been observed in Halemaʻumaʻu crater. Monitoring data also suggest that no new lava is being emplaced under the crusted crater floor, but it is possible that previously accumulated lava may feed further ooze-outs at the surface. Several hornitos on the crater floor are still glowing in overnight webcam views, but these are not erupting any lava. The recent reduction in activity is related to a large deflationary tilt signal that began on February 17. A live-stream video of the inactive western lava lake area is available at https://www.youtube.com/usgs/live.

Summit Observations: Following a large deflationary tilt signal that began on February 17 and lasted until early February 19, summit tiltmeters have tracked several smaller deflation/inflation (DI) events. Over the course of these DI events there has been a slight increase in net tilt, but the summit remains deflated compared to the period leading up to February 17. Eruptive activity on the Halemaʻumaʻu crater floor may resume if the summit re-inflates to the prior level. Volcanic tremor has dropped slightly in recent weeks, approaching background level. A sulfur dioxide (SO2) emission rate of approximately 250 tonnes per day (t/d) was measured on February 28.
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Old Mar 12, 2023, 10:56 pm
  #25  
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Kilauea has some indigestion but hasn't burped yet...

Alert Level: WATCH, Color Code: ORANGE
2023-03-12 19:29:06 UTC

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Sunday, March 12, 2023, 9:29 AM HST (Sunday, March 12, 2023, 19:29 UTC)

KILAUEA (VNUM #332010)
1925'16" N 15517'13" W, Summit Elevation 4091 ft (1247 m)

Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Kīlauea volcano is not erupting. The summit eruption of Kīlauea volcano, within Halemaʻumaʻu crater, remains paused. Lava is no longer flowing on the crater floor, where all recent eruptive activity has been confined. No significant changes have been observed along either of the volcano's rift zones. Yesterday, increased rates of seismicity and deformation at the summit suggested the eruption was about to resume. However, rates of seismicity and deformation later diminished and magma did not reach the surface, resulting in an intrusion instead of an eruption. Resumption of eruptive activity at Kīlauea summit no longer appears to be imminent, although it is possible that another intrusion or resumption may occur in the near future with little or no warning.

Halemaʻumaʻu Lava Lake Observations: No active lava has been observed over the past 24 hours. A few features on the crater floor are still glowing slightly in overnight webcam views, but these are not erupting lava. A live-stream video of the inactive western lava lake area is available at https://www.youtube.com/usgs/live.

Summit Observations: HVO summit tiltmeters recorded a relatively sudden transition from inflation to deflation last night at approximately 8:00 p.m. HST. The current deflationary signal follows several days of sustained inflation leading up to yesterdays magmatic intrusion. A shallow earthquake swarm was detected beneath the summit yesterday between 10:30 and 11:00 a.m. HST. The swarm was followed by a Magnitude-3.4 earthquake located 4 km SW of Volcano, Hawaii, at a depth of approximately 1 km (0.6 miles) at 11:50 a.m HST. This earthquake was felt locally and triggered a rockfall near Uēaloha (Byron Ledge) in Hawaii Volcanoes National Park. Tilt excursions also coincided with these earthquakes. Seismicity diminished at approximately 12:00 p.m. HST yesterday and has since returned to background levels.
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Old Mar 15, 2023, 12:13 am
  #26  
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Video of a Kilauea overflight from March 10, 2023:


Provides a sense of scale as to how much lava was erupted during these past two+ months given the size and scale of the lava dome that's now in place within the caldera (advance to 1:09 for its edge height).

More scale - some shots of geologists working on the island that formed back during the eruption of December 2020:

So...here's the western pond basin - now crusted over - on the left middle side of this shot that HVO has had the live camera trained on for much of the past month+ where lava would fountain and flow and now shows the layers and really how much lava has been uplifted in the latest eruption:

(actual photo is linked - too large for FT to accept natively)

If you look closely here where I've annotated in red (along with where the Western Pond is in blue):


and then zoom in:


you can just make out the two USGS/HVO geologists working on the December 2020 island.

Here's the two geologists working on the island:


And here's one of those geologists on that island:


And at least one of the pictures they took on the island:


For fun, here's two webcam shots of the Western "Pond" while it was active to give everyone an absolute sense of scale of how large the Halemaumau crater/Kilauea's caldera really is based on the shots above:




For all of the shots, thermal maps and a downloadable version of the above video posted by USGS/HVO taken on March 10, 2023: https://www.usgs.gov/observatories/h...-march-14-2023

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Old Mar 17, 2023, 3:59 pm
  #27  
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Happy St. Patrick's Day 2023 from Kilauea at dawn:





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Old Mar 18, 2023, 5:07 pm
  #28  
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Flat.

Alert Level: WATCH, Color Code: ORANGE
2023-03-18 17:49:59 UTC

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Saturday, March 18, 2023, 7:49 AM HST (Saturday, March 18, 2023, 17:49 UTC)


KILAUEA (VNUM #332010)
1925'16" N 15517'13" W, Summit Elevation 4091 ft (1247 m)

Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Activity Summary: Kīlauea volcano is not erupting. The summit eruption of Kīlauea volcano, within Halemaʻumaʻu crater, remains paused. Lava is no longer flowing on the crater floor. Resumption of eruptive activity may occur in the near future with little or no warning. No significant changes have been observed along either of the volcano's rift zones. Low rates of ground deformation and modest rates of seismicity continue across the volcano.

Halemaʻumaʻu Lava Lake Observations: No active lava has been observed over the past 24 hours. A live-stream video of the inactive western lava lake area is available at https://www.youtube.com/usgs/live.

Summit Observations: Uēkahuna tiltmeter is flat. We are flat, not inflationary or deflationary tilt. Seismicity is at background levels. Sulfur dioxide (SO2) measurements have been hampered by southerly winds. The last emission rate of approximately 250 tonnes per day (t/d) was measured on February 28.
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Old Mar 19, 2023, 1:58 pm
  #29  
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Big Island Video News posted a new video summarizing activity - volcanic and otherwise - at both Kilauea and Mauna Loa - and the restart of CO2 measurements (Keeling Curve) on Mauna Loa that were temporarily moved to Mauna Kea during the 2022 eruption on Mauna Loa:


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Old Mar 22, 2023, 12:20 am
  #30  
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Kilauea drops to Yellow/Advisory:

Code:
Alert Level: ADVISORY, Color Code: YELLOW

2023-03-21 18:36:50 UTC
HVO/USGS Volcanic Activity Notice

Volcano: Kilauea (VNUM #332010)

Current Volcano Alert Level: ADVISORY
Previous Volcano Alert Level: WATCH

Current Aviation Color Code: YELLOW
Previous Aviation Color Code: ORANGE


Issued: Tuesday, March 21, 2023, 8:36 AM HST
Source: Hawaiian Volcano Observatory
Notice Number: 2023/H115
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4091 ft (1247 m)
Area: Hawaii

Volcanic Activity Summary:Kīlauea is no longer erupting. Lava supply to the Halemaʻumaʻu lava lake ceased on March 7 based upon lava lake levels and behavior of the crater floor. Sulfur dioxide emissions have decreased to near pre-eruption background levels.   

Accordingly, the USGS Hawaiian Volcano Observatory (HVO) is lowering the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.  

Seismicity and deformation patterns remain unsettled. Resumption of eruptive activity may occur in the near future with little or no warning. Potential remains for resumption of this eruption or initiation of a new eruption at or near the summit of Kīlauea. 
 
HVO continues to closely monitor Kīlauea for signs of renewed activity. Should volcanic activity change significantly, a new Volcanic Activity Notice will be issued. 
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