December 2025 - Avo-usgs - list.avo.alaska.edu

[AVO-OPS] AVO LOG- Reply to: Reply to: Fee traveling 12/14-27, Ronni and Jessica Acting CS
by logs--- via Avo_ops 28 Dec '25

28 Dec '25

Posted by: David Fee (dfee1(a)alaska.edu), Sun Dec 28, 2025 06:16 (0616 UTC)-- I am back in town and have resumed CS duties. Thanks Ronni and Jess! Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454516 _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO RSDB- 27 Dec 2025 satellite report
by Jordan Lubbers via Avo_ops 27 Dec '25

27 Dec '25

Associated Keywords: Cloud cover: partly cloudy; Associated Keywords: Cloud cover: partly cloudy; VIIRS data not being brought in to AVO-VolcView. This report is limited to AVHRR, TROPOMI, AshCam, and available data from the last day from Sentinel-2/Maxar. To view these and other satellite data, please use http://volcview.wr.usgs.gov/ Duty person can be reached at (907) 786-7481 if you have any questions. Last image viewed: 27 Dec 2025 19:31 UTC _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO RSDB- 26 Dec 2025 satellite report
by Jordan Lubbers via Avo_ops 26 Dec '25

26 Dec '25

Associated Keywords: Cloud cover: cloudy; Associated Keywords: Cloud cover: cloudy; VolcView and public facing AshCam are down at the moment. This report is limited to internal AshCam instance and the limited Sentinel-2 and GEGD-Pro data from the last day. To view these and other satellite data, please use http://volcview.wr.usgs.gov/ Duty person can be reached at (907) 786-7481 if you have any questions. Last image viewed: 26 Dec 2025 19:31 UTC _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO LOG- Seismic Summary - 12/21/2025
by logs--- via Avo_ops 26 Dec '25

26 Dec '25

Posted by: cheryl searcy (csearcy(a)usgs.gov), Fri Dec 26, 2025 18:29 (1829 UTC)-- "Significant" located earthquakes for December 21, 2025: (picking by Cheryl Searcy) Note: Data from much of Dec. 21, 2025 are missing. These events represent only the data that were available. Spurr: 2; Redoubt: 1; Fourpeaked: 1 ======================== Spurr (2 EQs): 1 EQ ~18 km SSW of the summit ML 0.0; Z = 4.5 km 1 low frequency EQ ~4 km N of the summit ML -0.3; Z = 2.4 km Redoubt: 1 deep low frequency EQ ~11 km S of the summit ML -0.5; Z = 37.9 km Fourpeaked: 1 EQ ~9 km NNW of the summit ML 1.6; Z = 6.1 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454504 _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO LOG- Seismic Summary - 12/25/2025
by logs--- via Avo_ops 26 Dec '25

26 Dec '25

Posted by: cheryl searcy (csearcy(a)usgs.gov), Fri Dec 26, 2025 17:46 (1746 UTC)-- "Significant" located earthquakes for December 25, 2025: (picking by Scott Stihler) Makushin: 9; Iliamna: 7; Snowy: 3; Edgecumbe: 2; Gareloi: 2; Martin: 2; Kliuchef: 1; Katmai: 1; Mageik: 1; Novarupta: 1; Redoubt: 1; Spurr: 1 ======================== Makushin (9 EQs): 1 EQ ~20 km E of the summit ML 1.6; Z = 8.4 km 1 EQ ~21 km E of the summit ML 1.0; Z = 8.7 km 1 EQ ~20 km E of the summit ML 0.7; Z = 7.7 km 1 EQ ~20 km E of the summit ML 0.6; Z = 7.6 km 1 EQ ~24 km ENE of the summit ML 0.5; Z = 9.1 km 1 EQ ~20 km E of the summit ML 0.4; Z = 7.1 km 1 EQ ~18 km E of the summit ML 0.3; Z = 7.2 km 1 EQ ~20 km E of the summit ML 0.2; Z = 8.4 km 1 EQ ~19 km E of the summit ML 0.2; Z = 7.4 km Iliamna (7 EQs): 1 deep low frequency EQ ~16 km WNW of the summit ML 0.3; Z = 21.6 km 1 EQ ~1 km NNE of the summit ML -0.4; Z = -2.4 km 1 EQ ~4 km NE of the summit ML -0.5; Z = 1.4 km 1 EQ ~1 km NNE of the summit ML -0.7; Z = -0.9 km 1 EQ ~2 km NNE of the summit ML -0.9; Z = 0.6 km 1 EQ ~3 km SSE of the summit ML -1.1; Z = 5.3 km 1 EQ ~3 km SE of the summit ML -1.2; Z = -0.1 km Snowy (3 EQs): 1 EQ ~12 km E of the summit ML 0.6; Z = 7.3 km 1 EQ ~14 km N of the summit ML -0.2; Z = 4.5 km 1 EQ ~15 km N of the summit ML -0.7; Z = 5.2 km Edgecumbe (2 EQs): 1 EQ ~1 km SW of the summit ML 0.1; Z = 7.4 km 1 EQ ~2 km W of the summit ML -0.7; Z = 0.3 km Gareloi (2 EQs): 1 EQ ~19 km WSW of the summit ML 1.6; Z = 13.8 km 1 EQ ~14 km WSW of the summit ML 1.4; Z = 12.2 km Martin (2 EQs): 1 EQ ~0 km NE of the summit ML 1.3; Z = 2.6 km 1 EQ ~1 km N of the summit ML -0.7; Z = 1.4 km Kliuchef: 1 EQ ~14 km S of the summit ML 1.2; Z = 3.7 km Katmai: 1 EQ ~1 km SSE of the summit ML -0.7; Z = -0.3 km Mageik: 1 EQ ~1 km WNW of the summit ML -0.6; Z = 2.2 km Novarupta: 1 EQ ~4 km SSW of the 1912 dome ML -0.8; Z = 3.1 km Redoubt: 1 low frequency EQ ~1 km NW of the summit ML -0.7; Z = 1.2 km Spurr: 1 EQ ~26 km NE of the summit ML 0.2; Z = 7.2 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454503 _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO RSDB- 25 Dec 2025 satellite report
by Jordan Lubbers via Avo_ops 25 Dec '25

25 Dec '25

Associated Keywords: Cloud cover: cloudy; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62934 : shishaldin_islz-20251225T003000Z.jpg https://www.avo.alaska.edu/admin/rsdb/files/show/62935 : shishaldin_wtug2-20251224T230100Z.jpg https://www.avo.alaska.edu/admin/rsdb/files/show/62936 : Shishaldin_20251220_WV2-pan.png Associated Keywords: Volcanic clouds: steam/water; Cloud cover: cloudy; partly cloudy; To view these and other satellite data, please use http://volcview.wr.usgs.gov/ Duty person can be reached at (907) 786-7481 if you have any questions. Last image viewed: 25 Dec 2025 20:31 UTC _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO LOG- Seismic Summary - 12/24/2025
by logs--- via Avo_ops 25 Dec '25

25 Dec '25

Posted by: (), Thu Dec 25, 2025 19:02 (1902 UTC)-- "Significant" located earthquakes for December 24, 2025: (picking by Scott Stihler) Iliamna: 8; Makushin: 4; Spurr: 3; Takawangha: 3; Redoubt: 2; Kliuchef: 1; Cleveland: 1; Katmai: 1; Martin: 1; Snowy: 1; Trident: 1 ======================== Iliamna (8 EQs): 1 EQ ~5 km ESE of the summit ML -0.2; Z = 3.6 km 1 EQ ~6 km NE of the summit ML -0.3; Z = 2.1 km 1 EQ ~2 km N of the summit ML -0.6; Z = -0.0 km 1 EQ ~3 km NE of the summit ML -0.9; Z = 1.1 km 1 low frequency EQ ~3 km NNE of the summit ML -0.9; Z = 0.5 km 1 EQ ~3 km NNE of the summit ML -1.0; Z = 2.0 km 1 EQ ~1 km ENE of the summit ML -1.0; Z = -2.1 km 1 EQ ~6 km SSW of the summit ML -1.1; Z = -0.5 km Makushin (4 EQs): 1 EQ ~20 km E of the summit ML 0.2; Z = 7.0 km 1 EQ ~20 km E of the summit ML 0.0; Z = 7.2 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.3 km 1 EQ ~19 km E of the summit ML -0.5; Z = 7.9 km Spurr (3 EQs): 1 EQ ~15 km SW of the summit ML 0.1; Z = 8.1 km 1 EQ ~11 km SSW of the summit ML -0.5; Z = 4.1 km 1 EQ ~0 km ESE of the summit ML -1.1; Z = 4.3 km Takawangha (3 EQs): 1 EQ ~15 km E of the summit ML 1.3; Z = 8.1 km 1 EQ ~1 km WSW of the summit ML 0.6; Z = 10.2 km 1 EQ ~15 km E of the summit ML 0.4; Z = 8.2 km Redoubt (2 EQs): 1 EQ ~24 km NNE of the summit ML 0.5; Z = 10.5 km 1 EQ ~7 km NNW of the summit ML -1.1; Z = 8.6 km Kliuchef: 1 EQ ~1 km SW of the summit ML 0.1; Z = 2.1 km Cleveland: 1 EQ ~2 km ESE of the summit ML -0.0; Z = -1.7 km Katmai: 1 EQ ~1 km W of the summit ML -0.3; Z = 1.6 km Martin: 1 EQ ~1 km WSW of the summit ML -0.7; Z = 1.1 km Snowy: 1 EQ ~5 km N of the summit ML 1.0; Z = 7.1 km Trident: 1 EQ ~1 km WSW of the summit ML -0.6; Z = 3.6 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454495 _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO LOG- AVO-GI Meeting Notes for December 22, 2025
by logs--- via Avo_ops 25 Dec '25

25 Dec '25

Posted by: Kyungmin Kim (kkim39(a)alaska.edu), Thu Dec 25, 2025 01:25 (0125 UTC)-- AVO-GI Meeting Notes Dec 22, 2025 Great Sitkin: Orange Shishaldin : Yellow SIC: Matt Haney CS: David Fee (Acting Ronni Grapenthin 12/13 - 22, Jessica Larsen 12/23-27) Duty Scientist: Cheryl Searcy Duty Remote Sensor: Jordan Lubbers Duty Seismologist: Jeremy Pescik Primary alarms: Jeremy Pescik Secondary alarms: Cheryl Searcy BIG PICTURE: Shishaldin: The color code remains at YELLOW. Great Sitkin: The color code remains at ORANGE. SEISMOLOGY: Highlights from Scott: - Edgecumbe 3 events - Wrangell 3 events - Spurr 16 events (2 deep LPs) - Redoubt 3 events - Iliamna 20 events - Four peaked Mountain 4 events - Katmai region 16 events 3 events snowy/stellar 3 events Mount Katmai 6 events Trident/Novarupta (1 deep LP) 3 events Martin/Megeik - Shishaldin 2 events - West dahl 3 events - Makushin 53 events - Okmok 2 events (1 deep LP) - Cleveland 8 events - Great Sitkin 7 events - Gareloi 8 events - Davidof 1 event GEODESY: Ronni Grapenthin: - no notable volcanic deformation detected - There is no data from Aniakchak due to Port Heiden outage, likely still deflating - Snow loading signals were observed on Spurr. - Paper submitted to BV by Simon Plank with Hannah Diettrich, Ronni Grapenthin, and many others as co-author: Growth and erosion of volcanic islands since 1963 analyzed by multi-sensor satellite data and historical records GEOLOGY: Jessica Larsen: - Participated in the AGU last week with lots of great interactions and feedback. GAS: Taryn Lopez: -No SO2 detections for Alaska volcanoes seen in satellite data over the past week. Cleveland SO2 emissions were seen most day on the NOVAC network with emission rate typically Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454491 _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO RSDB- 24 Dec 2025 satellite report
by Jordan Lubbers via Avo_ops 24 Dec '25

24 Dec '25

Associated Keywords: Cloud cover: cloudy; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62932 : shishaldin_brpk-20251223T213100Z.jpg https://www.avo.alaska.edu/admin/rsdb/files/show/62933 : shishaldin_islz-20251224T013000Z.jpg Associated Keywords: Volcanic clouds: steam/water; Cloud cover: cloudy; To view these and other satellite data, please use http://volcview.wr.usgs.gov/ Duty person can be reached at (907) 786-7481 if you have any questions. Last image viewed: 24 Dec 2025 18:15 UTC _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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[AVO-OPS] AVO LOG- Seismic Summary - 12/23/2025
by logs--- via Avo_ops 24 Dec '25

24 Dec '25

Posted by: cheryl searcy (csearcy(a)usgs.gov), Wed Dec 24, 2025 19:03 (1903 UTC)-- "Significant" located earthquakes for December 23, 2025: (picking by Scott Stihler) Iliamna: 8; Makushin: 7; Snowy: 2; Martin: 1; Okmok: 1; Redoubt: 1; Spurr: 1; Trident: 1 ======================== Iliamna (8 EQs): 1 EQ ~18 km ENE of the summit ML -0.1; Z = 10.4 km 1 EQ ~2 km ESE of the summit ML -0.2; Z = 2.0 km 1 low frequency EQ ~2 km SE of the summit ML -0.4; Z = 0.6 km 1 EQ ~1 km NNE of the summit ML -0.6; Z = -0.8 km 1 low frequency EQ ~4 km N of the summit ML -1.0; Z = 2.3 km 1 EQ ~1 km N of the summit ML -1.0; Z = 0.9 km 1 EQ ~3 km ESE of the summit ML -1.1; Z = -2.2 km 1 EQ ~1 km SSW of the summit ML -1.1; Z = 0.4 km Makushin (7 EQs): 1 EQ ~20 km E of the summit ML 0.9; Z = 7.6 km 1 EQ ~20 km E of the summit ML 0.5; Z = 7.7 km 1 EQ ~20 km E of the summit ML 0.5; Z = 7.4 km 1 EQ ~20 km E of the summit ML 0.3; Z = 6.5 km 1 EQ ~20 km E of the summit ML 0.2; Z = 7.4 km 1 EQ ~20 km E of the summit ML 0.0; Z = 7.2 km 1 EQ ~2 km ESE of the summit ML -0.6; Z = 3.1 km Snowy (2 EQs): 1 EQ ~8 km NNW of the summit ML 1.2; Z = 5.2 km 1 EQ ~10 km N of the summit ML -0.4; Z = 5.6 km Martin: 1 EQ ~0 km ENE of the summit ML 0.5; Z = 1.0 km Okmok: 1 EQ ~5 km SW of the center of caldera ML -0.3; Z = 2.0 km Redoubt: 1 EQ ~23 km S of the summit ML -0.1; Z = 11.9 km Spurr: 1 EQ ~13 km S of the summit ML -0.5; Z = 4.3 km Trident: 1 EQ ~2 km WNW of the summit ML 0.2; Z = 3.7 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454488 _______________________________________________ Avo_ops mailing list -- avo_ops(a)list.avo.alaska.edu To unsubscribe send an email to avo_ops-leave(a)list.avo.alaska.edu

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