PVMBG reported that during 20 January-1 February seismicity at Egon was dominated by signals indicating emissions; shallow volcanic events had decreased. RSAM values increased on 25 January but did not exceed values detected during the previous peak on 12 January; overall seismicity had declined. The Alert Level was lowered to 2 (on a scale of 1-4) and residents were advised to stay at least 1.5 km away from the crater.
An eruption warning remains in place. Increased sulfur smells have been noted from the volcano which had been raised to second highest alert on 13 Jan.
Following a further increase in seismic activity, an eruption warning for the volcano was issued this morning. Residents living at the feet of the volcano were asked to evacuate for safety reasons.
PVMBG reported that during 1-12 January seismicity at Egon was dominated by shallow volcanic tremor, harmonic tremor, and signals indicating emissions. Seismicity had increased on 15 December 2015, and then fluctuated through 11 January. RSAM increased significantly on 12 January due to an earthquake detected at 0936.
Seismic unrest has been detected at the volcano. On 15 Dec, VSI raised the alert level of the volcano from 1 to 2 ("waspada", watch), on a scale of 1-4.
PVMBG reported that during October-November seismicity at Egon was at baseline levels, characterized by an average of one event per day of both deep and shallow volcanic earthquakes. On 15 December the network recorded 29 shallow volcanic earthquakes, a number significantly above baseline. PVMBG raised the Alert Level to 2 (on a scale of 1-4) that same day and advised residents and tourists to stay at least 1.5 km away from the crater.
CVGHM reported that on 17 June the Alert Level for Egon was lowered to 1 (on a scale of 1-4) because seismicity had decreased and emission heights had been lower since January.
CVGHM reported that on 7 April the Alert Level for Egon was raised from 1 to 2 (on a scale of 1-4) due to a marked increase in seismic activity since 28 March. Small steam plumes normally rose 10 m above the crater.
Wed, 15 Jul 2009, 06:00
CVGHM reported that the Alert Level for Egon was lowered to 1 (on a scale of 1-4) on 16 July due to the continued decrease in earthquake activity since 12 May. Small steam plumes were occasionally visible when the weather was clear.
Read allWed, 7 May 2008, 06:00
CVGHM reported that plume altitudes and seismicity from Egon decreased during 25 April-10 May. On 12 May, small steam plumes were visible. The Alert Level was lowered from 3 to 2 (on a scale of 1-4).
Read allWed, 9 Apr 2008, 06:00
CVGHM reported that white plumes from Egon continued to rise to an altitude of 1.8 km (5,900 ft) a.s.l. during 4-14 April. A peak in seismicity was reached during 6-7 April and then declined significantly during 7-15 April.
Read allWed, 2 Mar 2005, 06:00
The Darwin VAAC reported that DVGHM reduced the Alert Level at Egon to 3 (on a scale of 1-4) around 8 March. Ash was not visible on satellite imagery during 2-8 March.
Read allWed, 23 Feb 2005, 06:00
During 25-27 February, ash plumes from Egon rose to low levels above the volcano and seismicity was dominated by shallow volcanic earthquakes. Egon remained at Alert Level 4, the highest hazard status.
Read allWed, 16 Feb 2005, 06:00
According to a news report, as of 17 February recent eruptive activity at Egon had prompted the local government to evacuate hundreds of residents living near the volcano.
Read allThu, 10 Feb 2005, 01:56
The following is an abbreviated report following a message posted on the Volcano Listserv (9 Feb. 2005) and a message from the Volcanological Survey of Indonesia who monitor the Indonesian volcanoes:
Read allWed, 9 Feb 2005, 06:00
An explosion at Egon on 14 February at 1830 produced a plume to an unknown height. Egon remained at Alert Level 4, the highest level.
Read allWed, 2 Feb 2005, 06:00
An eruption at Egon on 6 February at 0103 led DVGHM to raise the Alert Level to 4 (the highest level) on the following day. The eruption was preceded by an increase in tremor, and consisted of the ejection of "glowing lava" and lapilli-sized material deposited on the volcano's S flank. An eruption occurred on 7 February at 1302 that was similar in size to the 6 February eruption.
Read allWed, 8 Sep 2004, 06:00
A news article reported that an eruption at Egon on 13 September produced an ash plume that drifted ~70 km downwind according to an Indonesian volcanologist. No ash was visible on satellite imagery. There were no reports of injuries or deaths.
Read allWed, 1 Sep 2004, 06:00
Strong volcanic activity at Egon beginning on 3 September led DVGHM to raise the Alert Level from 3 to 4 (on a scale of 1-4) on 4 September. The increase in volcanic activity began on 27 August when plumes rose to ~300 m above the volcano and explosion earthquakes were recorded. This activity prompted DVGHM to raise the Alert Level from 2 to 3.
Read allWed, 25 Aug 2004, 06:00
According to news articles, increased volcanic activity at Egon on 31 August led people from at least seven villages near the volcano to temporarily evacuate their homes. Local officials feared that about 2,000 people living on the mountainside were at risk. Reportedly, activity decreased after a few hours and most villagers returned home.
Read allWed, 21 Jul 2004, 06:00
According to DVGHM, an eruption began at Egon on 25 July at 2240, consisting of loud rumbling sounds, a strong sulfur scent, and explosions that rose to 1-1.5 km above the summit. A thick, black plume drifted NNW from the volcano. Interpretations of seismic data revealed that the eruption lasted about 2.5 hours.
Read allWed, 7 Jul 2004, 06:00
During 5-11 July, observers watching Egon volcano saw it emit white plumes of variable density that typically rose 25-75 m above the summit. The seismograph recorded a continuous series of 'emission earthquakes'with amplitudes of 2 mm. Egon's hazard status remained at Alert Level 2 (on a scale of 1-4).
Read allWed, 30 Jun 2004, 06:00
According to news articles, increased volcanic activity began at Egon on 3 July. Ash from an explosion on the night of the 3rd drifted as far W as Maumere, the capital of Flores. About 2,000 residents near the volcano were evacuated.
Read allWed, 4 Feb 2004, 06:00
According to a news report, local scientists found that volcanic activity that began with an eruption at Egon on 29 January had significantly decreased around 5 February. More than 1,000 of the ~5,600 residents who were evacuated from near the volcano returned home on the 5th.
Read allWed, 28 Jan 2004, 06:00
Volcanic activity began at Egon on 29 January around 0400 when a landslide traveled down the volcano's E crater wall. Around 1700 an explosion produced a black ash cloud to a height of ~750 m above the summit. During 30-31 January, loud noises from the volcano were followed by emissions of gray ash clouds.
Read all
