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Map of Augustine volcano, surrounding volcanoes, and surrounding communities. (Image courtesy Schaefer, Janet, Alaska Division of Geological & Geophysical Surveys.)
Map of Augustine volcano, surrounding volcanoes, and surrounding communities. (Image courtesy Schaefer, Janet, Alaska Division of Geological & Geophysical Surveys.)

Other pages about Augustine volcano

Volcano news: Augustine volcano

Thursday, Sep 27, 2007
AVO increased the Volcanic Alert Level to Advisory and the Aviation
Color Code to Yellow for Augustine on 22 September due to an increase
in seismic activity below the summit over the previous week. During
22-25 September, the earthquakes were generally less than M 1 and were
located at shallow depths beneath the summit. [read all]
Thursday, Aug 17, 2006

AVO reduced the Concern Color Code at Augustine from Yellow to Green on 9 August. Seismic, satellite, and visual data indicated a decrease in activity to background levels. No changes were seen at the summit during the previous several months. AVO warned that the lava dome and surrounding area were still unstable despite the apparent cessation of lava-dome growth. Rockfalls and avalanches were still occurring, especially on the N flank, and may continue for several weeks or months.

[read all]
Wednesday, Aug 09, 2006

According to the Anchorage VAAC, a pilot reported that on 27 July an ash plume from Augustine reached an altitude of 1.5 km (5,000 ft) a.s.l. and drifted SSE. The AVO did not find seismic evidence for this event, and seismicity levels remained low. They also stated that rockfalls and avalanches of hot debris from the cooling lava dome can produce small, localized ash plumes.

[read all]
Wednesday, Apr 26, 2006

The eruption at Augustine may be approaching its end.
Activity at Augustine declined to low levels during 7-14 April, with seismicity decreasing to slightly above background levels, and rockfalls and avalanches decreasing in frequency in comparison to previous weeks. Low-level eruptive activity continued, consisting of slow effusion of lava at the summit accompanied by small rockfalls and avalanches on the volcano's flanks. Satellite imagery showed a decline in thermal output consistent with the decreased activity. Sulfur-dioxide gas measurements showed continued high levels of magmatic gas emissions that may have been associated with degassing of lava at the summit of the volcano. Augustine remained at Concern Color Code Orange.

[read all]
Thursday, Apr 06, 2006

Low-level eruptive activity continues at Augustine volcano, with no significant changes. There are occasional hot block-and-ash flows, rock avalanches, rockfalls, and lava flows. Small and dilute ash clouds resulting from this activity is most likely confined to the immediate vicinity of the volcano. Satellite imagery continued to show a thermal anomaly related to the new lava dome and lava flow. Augustine remains at Concern Color Orange. -->More on Augustine volcano

...more [read all]
Tuesday, Mar 21, 2006

Low-level eruptive activity continues at Augustine Volcano. Changes in seismic signal characteristics as well as visual obsrevation suggest that Augustine is entering a phase of steady and slower effusion of lava, with intermittent block-and-ash-flows, rock avalanches, and rock falls from the summit lava dome.
The webcameras from AVO captured numerous hot avalanches and prolonged periods of incandescence in the summit area and on the upper northeast flank on several evenings. Satellite images show that thermal anomalies persist.
Observations made on overflights of the volcano this week indicate that the two lava flows on the north and northeast flanks continue to advance slowly. Occasional collapses of the lava flow fronts shed hot blocks and produce minor ash emissions. Estimates using photographs indicate that the new lava dome is about 70 m higher than the level of the lava dome formed in 1986.

...more [read all]
Tuesday, Mar 07, 2006

Low-level eruptive activity continues at Augustine volcano. Seismicity has increased slightly since Saturday as AVO reports. Minor ash emissions continue intermittently, producing only very minor ash plumes that do not travel far from the island. Rockfalls and small avalanches from the summit area continue to be recorded.

...more [read all]
Saturday, Feb 25, 2006

No significant changes at Augustine. The eruption is waning, seismicity decreasing and emissions of ash as well as incandescent rock falls from the lava dome are becoming more and more infrequent.

[read all]
Monday, Feb 20, 2006

Activity at Augustine Volcano continues at low levels. Rockfalls and avalanches from the lava dome continue to be recorded by AVO seismic stations. Occasional small explosions produce small plumes of steam and ash. Satellite views of the volcano show a persistent thermal anomaly in the summit area, consistent with the location of the lava dome. 

[read all]
Friday, Feb 17, 2006

The eruption at Augustine has been slowing down although seismic activity is still above average values and the growth of the lava dome continues slowly. Occasional rockfalls from the lava dome and small resulting pyroclastic flows occur, but their number is descreasing, suggesting that the rate of lava effusion is slowing..

...more [read all]
Thursday, Feb 09, 2006

The eruption at Augustine volcano has clamed down a bit, but continues with occasional ash eruptions, some of which produce small pyroclastic flows that travel down down Augustine's flanks. The highest ash plumes reached about 5 km a.s.l. (15,000 ft) a.s.l. AVO warns that further explosive activity producing ash clouds to heights over 7.6 km (25,000 ft) may still occur with little or no warning. Augustine remained at Concern Color Code Orange.

[read all]
Tuesday, Jan 31, 2006
 The Augustine volcano in action ...more [read all]
Wednesday, Jan 18, 2006

After several smaller explosions similar to the initial ones during the past days, Augustine Volcano seems to become even more active. Tuesday morning, an eruption produced an ash plume that reached 8 1/2 miles (ca. 13 km) height above sea level.

[read all]
Saturday, Jan 14, 2006
Augustine volcano emitting ash on 12 Jan. 2006, photographed from the west. (Photo: Game McGimsey/Alaska Volcano Observatory/U.S.G.S.)
Augustine volcano emitting ash on 12 Jan. 2006, photographed from the west. (Photo: Game McGimsey/Alaska Volcano Observatory/U.S.G.S.)

Two more explosions occurred from Augustine volcano on Jan. 12, 2006, producing ash plumes that rose to up to 5 miles (ca. 8 km) above sea level.

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Friday, Jan 13, 2006

Augustine volcano has calmed down a bit, and the USGS lowered the alert level from RED to ORANGE. Seismic activity has declined since yesterday’s eruption but remains elevated above background and the volcano continues to steam vigorously. AVO reports steam and minor ash emissions from a new vent on the 1986 lava dome, producing a plume reaching an estimated height of 8000 to 10,000 ft (2400 to 3050 m) above sea level. Field observataions confirmed mudflows (also visible in the on-island web camera) on the flanks of the volcano. These flows are the likely source of false reports of new lava flows on the volcano.

...more [read all]
Wednesday, Jan 11, 2006
In this photo from the Alaska Volcano Observatory's Augustine Island webcam, steam rises from Augustine Volcano 75 miles southwest of Homer, Alaska, Thursday Jan. 12, following its more powerful explosion at night 2006. (AP Photo/Alaska Volcano Observatory )
In this photo from the Alaska Volcano Observatory's Augustine Island webcam, steam rises from Augustine Volcano 75 miles southwest of Homer, Alaska, Thursday Jan. 12, following its more powerful explosion at night 2006. (AP Photo/Alaska Volcano Observatory )

Update: according to news sources, the eruption DID take place and an ash plume rose to a reported height of about 5 miles (8 km) into the sky. A weather service flight advisory was issued for pilots for an area 20 miles east and west of the volcano and about 50 miles north.
As the AVO reports a few minutes ago, "at 4:44 a.m. (AST) this morning, AVO began recording seismic signals interpreted as explosions at the summit of Augustine Volcano that likely mark the onset of an eruption. The current activity may be emitting ash, steam, and volcanic gases." The color code for Augustine has been raised to RED.
For more details and current information, please visit the Augustine page at the AVO.

[read all]
Saturday, Feb 26, 2005
Augustine volcano seen from the air on 4 January, 2006 (photo courtesy: G. McGimsey, USGS-AVO)
Augustine volcano seen from the air on 4 January, 2006 (photo courtesy: G. McGimsey, USGS-AVO)

Augustine volcano, Alaska, is showing more and more unrest and the Alaskan Volcan Observatory announced an increase of alert level to ORANGE, which means that an eruption is considered possible within a short time.

...more [read all]