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Stratovolcano 2519 m / 8,264 ft
Alaska Peninsula, USA, 55.42°N / -161.89°W
Current status: normal or dormant (1 out of 5)
Pavlof volcano eruptions:
1762(?), 1790(?), 1817, 1825(?), 1838(?), 1844, 1846, 1852(?), 1866(?), 1880, 1886, 1892, 1894, 1901, 1903(?), 1906, 1914, 1917, 1922, 1924, 1929, 1936, 1950, 1951, 1953, 1958, 1960, 1966, 1973, 1974(?), 1975, 1980(Mar-May), 1980 (Jul)(?), 1980 (Nov), 1981, 1983 (Jul), 1983 (Nov-Dec), 1983, 1986, 1990, 1996, 2007 (Aug), 2013, 2014, 2016
Typical eruption style:Explosive.
Pavlof volcano news & activity updates:
Fri, 5 Jul 2013, 14:57
No further eruptive activity has been observed.
Wed, 3 Jul 2013, 06:49
Over the past two days, the eruptive activity at Pavlof has greatly declined and AVO reduced the Aviation Color Code back to Yellow and the Volcano Alert Level to Advisory. Read more...Seismic tremor and small discrete explosions are no longer detected in seismic and pressure sensor data. Satellite observations show no evidence of elevated surface temperatures, volcanic gas, or ash emissions. There have been no visual observations from pilots or from webcam images of any eruptive activity since June 26. [ less] Mon, 1 Jul 2013, 16:12
The volcano has been quiet during the past 24 hours, but it is unclear whether this is already an end or only a pause in the eruption, or whether some weak activity is still continuing. AVO reports relatively continuous, but low-level tremor being still present and it is possible that minor emissions of ash, gas and steam and low-level lava fountaining are still occurring intermittently.
Fri, 28 Jun 2013, 15:06
Eruptive activity is continuing, but at a much lower level than earlier this week. The level of seismicity over the past 24 hours has continued to decline and now consists primarily of low level continuous tremor. Periods of continuous tremor are likely associated with lava fountaining and minor ash production, but at this level, emission rates are probably very low. Read more...Satellite data over the past 24 hours has shown strong thermal signals at the summit. Pilot reports from last evening have indicated that plumes are rising to levels not much above the summit of the volcano. AVO has received no reports of ash fall on nearby communities today. (AVO) [ less] Thu, 27 Jun 2013, 15:56
The eruption had increased yesterday and produced ash plumes rising up to about 8.5 km (28,000 ft), but has decreased in strength again today. Read more...Seismicity had climbed to the highest levels since the beginning of the eruption, suggesting that the magma supply was reinvigorated into a new explosive phase. Ash fall was reported in communities to the southwest of Pavlof, including King Cove, at 48 km (30 miles) distance. Today, seismic activity has declined gradually and now consists of intermittent bursts of tremor and occasional small explosions. Periods of continuous tremor and intermittent small explosions are likely associated with lava fountaining and minor ash production. [ less] Tue, 25 Jun 2013, 06:26
The eruption continues at low levels. Seismic tremor and occasional explosions are being detected in seismic data and indicate that minor ash emission is likely occurring, although no ash plumes were detected on satellite data over the past day. Read more...Elevated surface temperatures at the volcano have been observed in satellite data over the past 24 hours indicating lava at or near the surface. (AVO) [ less] Tue, 18 Jun 2013, 17:01
No changes in activity were reported by the Alaska Volcano Observatory. Seismic activity continues to decrease and no elevated surface temperatures were detected in satellite images during the past 24 hours. No plumes were visible in satellite images, while web camera images show mostly cloudy conditions.
Mon, 17 Jun 2013, 14:52
AVO reports no significant change in the seismicity at Pavlof in the past 24 hours: seismic tremor continues, but at lower amplitudes than previously. Read more...For the first time since May 27, no elevated surface temperatures were detected in satellite images during the past 24 hours. No plumes were visible in satellite images, and web camera images show cloudy conditions. (AVO) [ less] Sat, 15 Jun 2013, 14:57
Weak activity continues. Persistent elevated surface temperatures consistent with lava effusion were observed in satellite images, and minor ash plumes below 20,000 were generated through most of the week and mostly drifted to the southeast. There were no reports of ash fall on local communities. On Thursday, pilots reported observing no ash emissions. (AVO)
Thu, 13 Jun 2013, 08:14
Current seismic recording from Pavlov volcano (PVV station, AVO) Activity (external and internal) has been decreasing, although now intermittent ash emissions and possibly effusion of lava continue, AVO reports.
Wed, 12 Jun 2013, 14:30
MODIS hot spot data (past 7 days) for Pavlov volcano (ModVolc, Univ. Hawaii) Ash emissions continue, and possibly, a small lava flow is effusing from the summit. Read more...Seismic tremor and explosion signals are recorded by AVO and intermittent elevated surface temperatures consistent with lava effusion were observed over the past day in satellite images. (AVO) [ less] Mon, 10 Jun 2013, 14:19
Ash emissions, probably caused by strombolian activity continue to be observed. Seismic tremor and explosion signals accompany the activity. Persistent elevated surface temperatures visible on satellite data suggest that there is some lava effusion as well (in the form of small flows or a new lava dome). Read more...Satellite images from the last day also show an ash plume extending 12 miles (20 km) southeast of the volcano. This direction is consistent with low-level (less than 20,000 ft asl) winds. (AVO) [ less] Sat, 8 Jun 2013, 15:47
Weak eruptive activity continues, producing small steam and ash plumes drifting at about 18-20,000 ft (5-6 km) altitude SSE as detected on satellite data (VAAC Anchorage).
Fri, 7 Jun 2013, 15:10
The renewed eruptive activity (since 4 June) continues at low to moderate levels, accompanied by increased seismic activity. AVO reported low lava fountaining, although webcam images of the plume are more consistent with classic strombolian-type activity. Yesterday morning, ash emissions rose to 14-18,000 ft (4.2-5.6 km) altitude and drifted about 45 km SW. Read more...Satellite images show elevated surface temperatures at the summit, consistent with mild explosive and perhaps effusive activity. [ less] Wed, 5 Jun 2013, 14:33
New ash emissions resumed at approximately 11:00 AKDT (19:00 UTC) this morning and were seen in satellite data and observed by pilots. The new ash plume was drifting SE at approx. 19,000 ft (6 km) a.s.l. altitude. AVO reported weak seismicity beginning at 10:57 AKDT and raised the Aviation Color Code to Orange.
Tue, 4 Jun 2013, 10:48
No further activity has been detected during the past days. Alert status is at yellow.
Wed, 29 May 2013, 08:41
The eruption might have ended already, or is at least pausing for the moment. Over the past few days, the eruptive and seismic activity have greatly declined, the Alaska Volcano Observatory reports. Read more...There are no longer volcanic tremor or small explosions detected and satellite observations show no evidence of elevated surface temperatures, volcanic gas or ash emissions. There have been no visual observations from pilots or web cameras of any eruptive activity. "Consequently, the Aviation Color Code is being reduced to Yellow and the Volcano Alert Level to Advisory. During past eruptions of Pavlof, the style of eruptive activity fluctuated from higher to lower levels. Therefore, this pause in eruptive activity does not necessarily indicate that the eruption has ended. Renewed activity is possible, and may not be preceded by significant seismic activity." [ less] Mon, 27 May 2013, 07:50
The eruption continues at low levels (both as surface lava emission and seismic activity). Read more...AVO mentions that "during past eruptions of Pavlof, the style of eruptive activity fluctuated from higher to lower levels. Therefore, this apparent lower-level activity does not necessarily indicate that the eruption is ending. Although the activity to date has been characterized by relatively low-energy lava fountaining and ash emission, more energetic explosions could occur without warning that could place ash clouds above 20,000 ft. "Depending on wind direction and strength, trace to minor ash fall may occur on local communities downwind. Information about mitigating the effects of volcanic ash can be found on the AVO web page. [ less] Fri, 24 May 2013, 08:15
MODIS hot spot data (yesterday) for Pavlov volcano (ModVolc, Univ. Hawaii) Weak activity (probably minor lava effusion) continues at the volcano, visible on satellite imagery as a thermal anomaly. AVO only observed degassing and almost no ash emissions, but maintains orange alert level in case eruptive activity restarts.
Thu, 23 May 2013, 10:44
Eruption plume from Pavlov on 21 May seen from space (NASA) The eruption at Pavlov continues but seismic and eplosive-effusive eruptive activity have dropped compared to the day before yesterday when an ash plume reached 7,000 m altitude and was visible from space.
Mon, 20 May 2013, 10:30
The eruption continues with no significant changes. Small lava fountaining, explosions, and the explosive interaction of the lava flow with snow and ice generate a plume of steam, ash, and gas, occasionally reaching up to 22,000 ft. above sea level, and extending primarily southeast from the volcano over the North Pacific Ocean visible in satellite images. Read more...Minor ash fall is likely occurring on the north, east and southeast flanks of the volcano and possibly on parts of Pavlof Bay and adjacent waters southeast of the volcano. Seismic activity remains elevated with nearly continuous volcanic tremor being recorded on the local seismic network. Although the activity to date has been characterized by relatively low-energy lava fountaining and ash emission, more energetic explosions could occur without warning at any time that could place ash clouds above 20,000 ft. Depending on wind direction, trace to minor amounts of ash may fall on nearby communities, including Sand Point, Nelson Lagoon, King Cove and Cold Bay. (AVO) [ less] Sun, 19 May 2013, 10:32
Pavlof volcano eruption column, May 18, 2013. Photo courtesy Theo Chesley. (AVO) The eruption continues with lava fountaining, an active lava flow and ash emissions, accompanied by continuous seismic tremor. Aerial observations suggest that the interaction of lava and ice on the upper slope of the volcano create mud flows and pyroclastic flows. Read more...A narrow plume of steam, ash, and gas, occasionally up to 20,000 ft. above sea level, and extending southeast from the volcano over the North Pacific Ocean was visible in satellite images yesterday. Minor to trace ash fallout could be occurring on the north, east and southeast flanks of the volcano and possibly on parts of Pavlof Bay and adjacent waters southeast of the volcano. Nearby communities have not reported any ash fall over the past 24 hours. (AVO) [ less]
Fri, 17 May 2013, 10:56
MODIS hot spot data (past 7 days) for Pavlov volcano (ModVolc, Univ. Hawaii) The eruption continues with lava fountaining at the summit that feeds a lava flow now over 100 m long and produces a continuous ash, steam, and gas plume extending downwind from the volcano for 50 to 100 km at an altitude of about 20,000 ft above sea level. This morning the cloud was carried to the southeast. Satellite images show persistent elevated surface temperatures at the summit and on the northwest flank. Read more...Seismic activity remains elevated with nearly continuous tremor recorded on the seismic network. 
Current seismic recording from Pavlov volcano (PVV station, AVO) [ less] Thu, 16 May 2013, 09:37
View of Pavlof, May 14, 2013. Photo courtesy of pilot Theo Chesley. (AVO) The eruption continues. The volcano produces a lava flow on the northwest flank. Interaction of the lava flow and ice, producing debris flows, as well as possible explosions at the vent produce a steam-ash plume rising up to about 20,000 ft. above sea level. Read more...Residents of Cold Bay, located 37 miles southwest of the volcano, observed incandescent glow at the summit during the night. (AVO) [ less]
Wed, 15 May 2013, 08:50
A new steaming lava flow at Pavlof seen by a airline pilot. Photo taken at around 7 pm, May 13. Eruptive activity on 13 May at Pavlof has been confirmed. Pilot images have shown a new spatter fed lava flow extending 500 m down the N flank of the volcano. Read more...Small steam and ash eruptions were noted from Cold Bay. 
A small gas and ash? plume from Pavolf on May 14. [ less] Tue, 14 May 2013, 15:51
MODIS hot spot data (past 2 days) for Pavlov volcano (ModVolc, Univ. Hawaii) Seismic activity has decreased today, but remains elevated. MODIS data confirm a hot spot at the summit, which could suggest a small lava flow there. 
Current seismic recording from Pavlov volcano (PVV station, AVO)
Mon, 13 May 2013, 22:03
A new eruption has probably started. AVO raised the alert level to orange, following an increase in seismic activity this morning along with the presence of an intense thermal anomaly at the summit observed in latest satellite imagery. Read more...Similar patterns of seismicity and elevated surface temperatures have previously signalled the onset of eruptive activity at Pavlof. Although not yet visually confirmed, a low-level eruption of lava has likely begun from a summit vent. No ash clouds have been detected. Source: AVO [ less]
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