Thu, 15 Dec 2022, 07:00
OVSICORI-UNA reported that small phreatic explosions continued at Rincón de la Vieja during 14-20 December. A small phreatic explosion at 0828 on 14 December produced a steam plume that rose 500 m above the crater rim. An associated sulfur dioxide anomaly was registered at a station located to the W of the crater.
Wed, 30 Nov 2022, 15:00OVSICORI-UNA reported continuing eruptive activity at Rincón de la Vieja characterized by occasional small phreatic explosions; five were recorded during 19-25 November. A notable variability in sulfur dioxide emissions was first observed on 18 November and continued through the week, with a peak measurement as high as 1,500 tons per day. A phreatic explosion at 1432 on 25 November produced a steam-rich plume that rose 2 km and drifted SW.
Wed, 12 Oct 2022, 14:00
OVSICORI-UNA reported continuing eruptive activity at Rincón de la Vieja characterized by occasional small phreatic explosions. A small explosion at 1923 on 4 October lasted two minutes but was not visually observed due to darkness and weather conditions. Small gas-and-steam emissions were recorded at 1647 on 8 October and 0940 on 9 October; at least the first emission was seen rising above the crater rim.
Thu, 6 Oct 2022, 10:00OVSICORI-UNA reported continuing eruptive activity at Rincón de la Vieja characterized by occasional small phreatic explosions. A small explosion at 1923 on 4 October lasted two minutes but was not visually observed due to darkness and weather conditions. Small gas-and-steam emissions were recorded at 1647 on 8 October and 0940 on 9 October; at least the first emission was seen rising above the crater rim.
Wed, 14 Sep 2022, 14:00
OVSICORI-UNA reported continuing eruptive activity at Rincón de la Vieja characterized by occasional small phreatic explosions. A small hydrothermal explosion at 1510 on 8 September produced a steam-and-gas plume that rose 500 m above the crater rim. During a clear observation period from 0500 to 0800 on 10 September scientists saw a continuous gas-and-steam plume and noted a hydrothermal explosion at 0640.
Thu, 8 Sep 2022, 10:00OVSICORI-UNA reported continuing eruptive activity at Rincón de la Vieja characterized by occasional small phreatic explosions. A small hydrothermal explosion at 1510 on 8 September produced a steam-and-gas plume that rose 500 m above the crater rim. During a clear observation period from 0500 to 0800 on 10 September scientists saw a continuous gas-and-steam plume and noted a hydrothermal explosion at 0640.
Wed, 8 Jun 2022, 18:34
OVSICORI-UNA reported continuing eruptive activity at Rincón de la Vieja characterized by small phreatic explosions. A minor emission was possibly recorded on 4 June, though it could not be visually confirmed due to darkness. An eruptive event at 0804 on 6 June produced a steam plume that rose about 3 km above the summit.
Wed, 1 Jun 2022, 18:36OVSICORI-UNA reported that several small phreatic explosions at Rincón de la Vieja were recorded during 25-28 May. A phreatic explosion at 1730 on 25 May produced minor ashfall on local plants located on the upper flanks. Weather conditions often prevented views of plumes.
Thu, 26 May 2022, 09:08
OVSICORI-UNA reported that a few small phreatic explosions at Rincón de la Vieja were recorded during the previous week. A phreatic explosion at 1343 on 18 May produced a steam-and-gas plume that rose 200 m above the crater rim. At 1710 on 19 May an eruptive event produced a gas-and-steam plume that rose 100 m above the summit.
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Wed, 18 May 2022, 17:52On 13 May OVSICORI-UNA reported that 23 small phreatic explosions at Rincón de la Vieja were recorded during the previous week. Eruptive events at 2328 on 10 May and 0700 on 11 May were recorded by the seismic network through darkness and cloudy weather conditions prevented visual confirmation. Tremor levels decreased significantly on 12 May.
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Thu, 12 May 2022, 05:37
On 5 May OVSICORI-UNA reported an average of two daily phreatic explosions at Rincón de la Vieja during the previous week. The events did not eject material outside of the crater and produced steam plumes that rose no higher than 200 m above the crater rim. A phreatic explosion at 1650 on 6 May produced a steam plume that rose 500 m.
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Fri, 29 Apr 2022, 07:04OVSICORI-UNA reported that a small eruptive event at Rincón de la Vieja was recorded at 0618 on 25 April, though it was not visible due to weather conditions. Another small event was recorded at 0156 on 26 April; the plume was not visible due to conditions.
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Thu, 28 Apr 2022, 00:35
Rincón de la Vieja Cráter Activo from the NE. Photo Credit: OVSICORI-UNA.
OVSICORI-UNA reported that a small eruptive event at Rincón de la Vieja was recorded at 06:18 on 25 April. Another small event was recorded at 01:56 on 26 April. Neither event was visible due to weather conditions.
Fri, 22 Apr 2022, 12:05
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Rincón de la Vieja. Photo Credit: OVSICORI-UNA.
OVSICORI-UNA reported four phreatic eruptions during the first week of April. None of the eruptions were energetic enough to generate lahars.
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Thu, 14 Apr 2022, 00:04
OVSICORI-UNA reported that a small eruptive event at Rincón de la Vieja was recorded at 0136 on 6 April, though the event was not visible due to poor visibility. Two small phreatic eruptions were recorded on 7 April at 1141 and 1323, based on webcam data. The resulting plumes rose 1,000 m and 500 m above the crater, respectively.
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Wed, 6 Apr 2022, 20:07OVSICORI-UNA reported that 10 eruptive events at Rincón de la Vieja had been recorded since 15 March, one of which was detected on 27 March. Between 28 and 29 March a swarm of long-period earthquakes were detected. On 4 April at 1042 an eruption that lasted 1.5 minutes produced a plume, but the height was not observed due to weather conditions.
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Wed, 30 Mar 2022, 19:55
OVSICORI-UNA reported that several eruptive events at Rincón de la Vieja were recorded during 22-26 March, though none were visible due to weather conditions. A one-minute-long event was recorded at 0350 on 22 March. A series of pulses occurred over a 20-minute period, at 0140, 0146, and 0159 on 23 March, with additional small events at 1045, 1339, 1939, and 2244.
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Wed, 23 Mar 2022, 21:15
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Satellite image of Rincón de la Vieja volcano on 23 Mar 2022
Wed, 23 Mar 2022, 19:36
OVSICORI-UNA reported that eruptive events at Rincón de la Vieja were recorded at 0405 on 19 March, 1402 on 20 March, and 0350 on 22 March. The events lasted 1-8 minutes each and no plumes were visible due to weather conditions.
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Thu, 17 Mar 2022, 09:54OVSICORI-UNA reported that an eruptive event at Rincón de la Vieja was recorded at 0956 on 15 March. No plumes were visible due to weather conditions.
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Thu, 10 Feb 2022, 09:26
OVSICORI-UNA reported that an eruption at Rincón de la Vieja was recorded at 1853 on 2 February. No plumes were visible due to weather conditions.
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Thu, 3 Feb 2022, 00:27OVSICORI-UNA reported that eruptions were recorded at Rincón de la Vieja at 2250 on 26 January, at 0716 and 1050 on 27 January, at 1308 on 30 January, and at 0447 on 1 February. No plumes were visible due to cloud cover or darkness.
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Wed, 26 Jan 2022, 19:43
OVSICORI-UNA reported that two eruptions were recorded at Rincón de la Vieja, at 2227 on 20 January and 0225 on 23 January, though weather conditions prevented visual confirmation of plumes. Each event was 1-2 minutes long. At 1139 on 25 January an eruption produced a plume that rose 500-1,000 m.
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Tue, 18 Jan 2022, 14:16OVSICORI-UNA reported that at 0024 on 13 January a two-minute eruption was recorded at Rincón de la Vieja, though weather clouds prevented visual confirmation. Residents to the N heard the eruption and felt vibrations, and lahars were seen in the Rio Azul. Small eruptive events were recorded at 1153 on 15 January and 1243 on 18 January, but plumes were not visible due to weather clouds.
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Thu, 6 Jan 2022, 18:05
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The eruption visibility at Rincon de la Vieja volcano yesterday was limited due to dense clouds (image: OVSICORI)
The Observatorio Vulcanológico y Sismológico de Costa Rica (OVSICORI) recorded an explosive eruption at the volcano at 18:33 local time yesterday that lasted about 2 minutes. The height of the ash plume is unknown due to visibility as it was very limited due to dense clouds.
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Wed, 5 Jan 2022, 15:42OVSICORI-UNA reported that multiple eruptive events were recorded at Rincón de la Vieja on 5 January, though most of them were small. A notable explosion at 1833 ejected incandescent material above the crater rim that was visible in webcam images for about 30 seconds. Darkness obscured views of a plume and no ash was visible in satellite images.
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