Do this automatically from now on
 Thursday, May 16, 2013
No changes have occurred - the only signs of activity are small earthquakes, mostly related to rock fracturing inside the volcano SE of the main dome. The alert status remains at yellow.
Sunday, Apr 14, 2013
 Seismic signal from Machin volcano yesterday (CIMA station, Weber County) Thursday, Mar 28, 2013
 Seismogram last evening from Cerro Machin (CIMA station, INGEOMINAS) Tuesday, Mar 19, 2013
 Current seismogram from Cerro Machin (CIMA station, INGEOMINAS)  Seismogram early 18 March Monday, Feb 11, 2013
 Seismogram last night from Cerro Machin (CIMA station, INGEOMINAS)  Current seismogram from Cerro Machin (CIMA station, INGEOMINAS) Thursday, Feb 07, 2013
The volcano continues to show seismic activity above background, mainly in the form of frequent tiny volcanic earthquakes.
Saturday, Feb 02, 2013
 Seismogram last night (1) from Cerro Machin (CIMA station, INGEOMINAS)  Seismogram last night (2) from Cerro Machin (CIMA station, INGEOMINAS) Thursday, Jan 31, 2013
There is no surface activity, but continuing seismic unrest including some volcanic-tectonic quakes in two areas southeast of the summit come, at 2-4 km and 12-15 km depth.
Monday, Jan 21, 2013
Many tiny earthquakes continue to occur beneath the volcano.
Sunday, Dec 30, 2012
 Current seismic signal (CIMA station) Tuesday, Dec 18, 2012
Earthquakes continued to occur and were located mainly south of the main dome and the southeast of it in the area between Moral and Moralito at depths between 3 and 15 km. 2 significant quakes of local magnitudes 3.2 and 3.7 occurred on 14 and 16 Dec at 16:51 and 19:16 in the Moralito sector and were felt by residents near the volcano, and in the towns of Cajamarca and Ibague. Other parameters monitored have no significant changes.
Sunday, Dec 09, 2012
On December 7, 2012 at 05:47 (local time) a magnitude 3.1 volcano-tectonic earthquake occurred at 14.6 km depth southeast of main dome. The quake was felt by residents near the volcano, and in the towns of Cajamarca and Ibague.
Wednesday, Nov 07, 2012
Elevated seismic activity continues to be recorded mainly SE of the main dome of the volcano in the sector between Moral and Moralito, at depths of 3-17 km. No other unusual signs of activity have been recorded recently.
Sunday, Oct 21, 2012
 Current seismogram from Cerro Machin (CIMA station, INGEOMINAS) Wednesday, Oct 17, 2012
 Seismic signal on 17 Oct showing the earthquake (CIMA station) Friday, Oct 12, 2012
 Seismic signal on 12 Oct (CIMA station) Tuesday, Oct 09, 2012
 Seismic signal this morning October 9 (CIMA station, INGEOMINAS)  Seismic signal with the 2 mag 4.6 and 3.9 earthquakes on 7 Oct (CIMA station, INGEOMINAS) Wednesday, Oct 03, 2012
Some weak seismic activity was located south of the main dome at depths ranging between 3 and 5 km. Additionally, there were earthquakes located to the southeast of the dome in the sector between Moral and Moralito. The earthquake of greatest magnitude during the week was a 1.0 (Local Magnitude ML) on September 29 at 10:15 (local time). No other changes were noted at the volcano.
Wednesday, Sep 26, 2012
 Current seismogram from Cerro Machin (CIMA station, INGEOMINAS) Wednesday, Sep 19, 2012
 Seismic signal on 19 Sep (CIMA station) Wednesday, Sep 12, 2012
 Seismic signal this morning (CIMA station) Tuesday, Sep 11, 2012
 Seismic signal on 10 Sep (CIMA station)  Current seismic signal from same station Sunday, Sep 09, 2012
 Current seismogram from Cerro Machin showing the 3.6 quake this morning (CIMA station, INGEOMINAS) Wednesday, Sep 05, 2012
 Current seismogram from Cerro Machin (CIMA station, INGEOMINAS) Wednesday, Aug 29, 2012
No significant changes have been occurring. Weak seismic unrest continues at Cerro Machín with some small volcanic quakes clustered at depths between 3-6 km south and southwest under the main summit. The largest event was a magnitude 0.55 on 22 August at 08:27 local time.
Tuesday, Aug 07, 2012
 Seismic signal from Cerro Machin (CIMA station, INGEOMINAS) Tuesday, Nov 11, 2008
Machín volcano in Tolima (Columbia) became active over the weekend as Columbian newspapers reported. Hundreds of families living in the area surrounding the volcano had to be evacuated. ...more
Wednesday, Feb 06, 2008
There was reported a unusual seismicity south at the Machin volcano dome during 6-8 January 2008. There have been reported also volcano-tectonic seismic signals that show that a volcanic activity may occur soon.
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