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

[AVO-OPS] AVO LOG- AVO-GI Meeting Notes December 15, 2025
by logs--- via Avo_ops 15 Dec '25

15 Dec '25

Posted by: Claire Puleio (cepuleio(a)alaska.edu), Mon Dec 15, 2025 20:35 (2035 UTC)-- AVO-GI Meeting Notes December 15, 2025 Great Sitkin: Orange Shishaldin: Yellow SIC: Matt Haney CS: Ronni Grapenthin Duty Scientist: Tim Orr Duty Remote Sensor: Tim Orr Duty Seismologist: John Lyons Primary alarms: John Lyons Secondary alarms: Tim Orr AVO Radio: Abbey Nastan BIG PICTURE: Great Sitkin: The color code remains at ORANGE. Shishaldin: The color code remains at YELLOW. General Highlights: - David is out, Ronni is acting CS, Jess will take over after AGU. Lot’s of folks at AGU! SEISMOLOGY: Highlights from Scott: - Edgecumbe: 3 events - Wrangell: 2 events - Spurr: 7 events, including 1 DLP near Spurr with a depth of ~23 km - Redoubt: 5 events - Iliamna: 20 events - Augustine: 3 events, including 1 unusual EQ ~2 km ENE with a depth of ~14 km - Fourpeaked: 1 event - Katmai Region: 33 events - Snowy/Steller: 3 events - Mount Katmai: 10 events - Trident/Novarupta: 7 events - Martin/Mageik: 14 events - Shishaldin: 2 events, including 1 MDLP at a depth of ~19 km - Westdahl: 1 event - Great Sitkin: 6 events - Semisopochnoi: 5 events, including 2 MDLPs at depths of ~16 and ~11 km - Little Sitkin: 1 event GEODESY: Ronni Grapenthin: - No noticeable deformation, lots of AGU prep happening last week. Making progress on the Semisopochnoi paper, which is nearing completion. FIELD OPS: Ellie Boyce: - Little Sitkin stations have come and gone, but as of this morning they should be in. Some brief outages on some of the Kenai based networks, seems like largely related to ISP issues. Pretty short outages, may see some small gaps as a results GAS: Claire Puleio: - No Satellite SO2 detections seen over the past week. Cleveland DOAS has observed SO2 over the past week ranging from 0-1200 t/day. Notes by Claire Puleio (cepuleio(a)alaska.edu) and Ronni Grapenthin Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454424 _______________________________________________ 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- 15 Dec 2025 satellite report
by Tim Orr via Avo_ops 15 Dec '25

15 Dec '25

Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62918 : 375mAKKN-MIR-d20251215t1355149007Z.png https://www.avo.alaska.edu/admin/rsdb/files/show/62919 : gsitkin_gsck-20251215T000600Z.jpg Associated Keywords: Volcanic clouds: steam/water; Elevated surface temperatures: barely elevated; Cloud cover: mostly clear; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62920 : 375mAKSH-VIS-d20251215t0010961992Z.png https://www.avo.alaska.edu/admin/rsdb/files/show/62921 : 2025-12-15_08-29-24.jpg https://www.avo.alaska.edu/admin/rsdb/files/show/62922 : 2025-12-15_08-36-03.jpg https://www.avo.alaska.edu/admin/rsdb/files/show/62923 : shishaldin_brpk-20251214T213100Z.jpg Associated Keywords: Volcanic clouds: steam/water; Cloud cover: partly cloudy; <b>Semisopochnoi:</b> No obvious plume visible despite very clear webcam views. <b>Cleveland:</b> Thermal anomaly visible in fairly clear satellite views this morning. 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: 15 Dec 2025 14:44 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 - 12/13/2025
by logs--- via Avo_ops 15 Dec '25

15 Dec '25

Posted by: Matthew Haney (mhaney(a)usgs.gov), Mon Dec 15, 2025 07:40 (0740 UTC)-- "Significant" located earthquakes for December 13, 2025 (picking by Scott Stihler): Takawangha: 4; Katmai: 2; Augustine: 1; Great Sitkin: 1; Mageik: 1; Martin: 1; Redoubt: 1; Spurr: 1; Trident: 1; Westdahl: 1; Fourpeaked: 1 ======================== Takawangha (4 EQs): 1 EQ ~6 km E of the summit ML 1.5; Z = 5.3 km 1 EQ ~6 km E of the summit ML 1.4; Z = 3.8 km 1 EQ ~13 km E of the summit ML 0.6; Z = 8.2 km 1 EQ ~6 km E of the summit ML 0.3; Z = 7.1 km Katmai (2 EQs): 1 EQ ~1 km SSE of the summit ML 0.4; Z = 2.3 km 1 EQ ~1 km E of the summit ML 0.2; Z = 6.7 km Augustine: 1 EQ ~2 km NE of the summit ML 1.2; Z = 13.6 km Great Sitkin: 1 EQ ~3 km W of the summit ML 0.5; Z = 3.5 km Mageik: 1 EQ ~0 km WSW of the summit ML 0.3; Z = 1.7 km Martin: 1 EQ ~1 km NNW of the summit ML 0.0; Z = 0.7 km Redoubt: 1 EQ ~11 km ENE of the summit ML -0.2; Z = 5.9 km Spurr: 1 EQ ~8 km SE of the summit ML 0.1; Z = 23.3 km Trident: 1 EQ ~2 km NW of the summit ML 0.7; Z = 3.7 km Westdahl: 1 EQ ~3 km W of the summit ML 1.3; Z = 3.3 km Fourpeaked: 1 EQ ~8 km SSW of the summit ML 0.6; Z = 5.1 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454419 _______________________________________________ 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- Matt Loewen Acting AVO SIC Dec. 15-19
by logs--- via Avo_ops 15 Dec '25

15 Dec '25

Posted by: Matthew Haney (mhaney(a)usgs.gov), Mon Dec 15, 2025 02:36 (0236 UTC)-- I'll be heading to AGU starting early tomorrow morning, returning late on Friday. Matt Loewen will be Acting AVO SIC while I'm gone. Thanks Matt! Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454418 _______________________________________________ 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- 14 Dec 2025 satellite report
by Chris Waythomas via Avo_ops 14 Dec '25

14 Dec '25

Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62916 : 375mAKKN-MIR-d20251214t0101433866Z.png Associated Keywords: Elevated surface temperatures: barely elevated; Cloud cover: mostly clear; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62917 : 1kmAKEA-VIS-d20251213t2316802654Z.png Associated Keywords: Cloud cover: mostly clear; 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: 14 Dec 2025 14:42 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- Fee Traveling 12/14-27 Inbox
by logs--- via Avo_ops 14 Dec '25

14 Dec '25

Posted by: Ronni Grapenthin (rgrapenthin(a)alaska.edu), Sun Dec 14, 2025 16:17 (1617 UTC)-- Now also for the logs ... David is on travel and I am acting CS until 12/22 in the afternoon, then Jess will take over until David's return. Phone has been forwarded. Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454412 _______________________________________________ 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- Fee traveling 12/14-27, Ronni and Jessica Acting CS
by logs--- via Avo_ops 14 Dec '25

14 Dec '25

Posted by: David Fee (dfee1(a)alaska.edu), Sun Dec 14, 2025 09:59 (0959 UTC)-- I'm heading to AGU and then some personal travel. Ronni is now Acting CS and the phone has been forwarded. Jess will take over later on. Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454410 _______________________________________________ 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] Fee Traveling 12/14-27
by Ronni Grapenthin via Avo_ops 14 Dec '25

14 Dec '25

David is on travel and I am acting CS until 12/22 in the afternoon, then Jess will take over until David's return. Phone has been forwarded. -- Ronni Grapenthin (he / him) Professor of Geodesy Alaska Volcano Observatory Alaska Earthquake Center Geophysical Institute University of Alaska Fairbanks 2156 Koyukuk Drive Fairbanks, AK-99775 web: http://www.grapenthin.org office: Elvey 413B phone: +1 907 474 7286 _______________________________________________ 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- 13 Dec 2025 satellite report
by Chris Waythomas via Avo_ops 13 Dec '25

13 Dec '25

Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62914 : 375mAKKN-MIR-d20251213t1320465416Z.png Associated Keywords: Elevated surface temperatures: barely elevated; Cloud cover: mostly clear; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62915 : 375mAKSH-MIR-d20251213t1202721825Z.png Associated Keywords: Volcanic clouds: steam/water; Elevated surface temperatures: barely elevated; Cloud cover: mostly clear; 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: 13 Dec 2025 15:01 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 - 12/12/2025
by logs--- via Avo_ops 13 Dec '25

13 Dec '25

Posted by: Matthew Haney (mhaney(a)usgs.gov), Sat Dec 13, 2025 03:49 (0349 UTC)-- "Significant" located earthquakes for December 12, 2025 (picking by Scott Stihler): Spurr: 4; Iliamna: 3; Great Sitkin: 2; Edgecumbe: 1; Cleveland: 1; Katmai: 1; Martin: 1; Redoubt: 1 ======================== Spurr (4 EQs): 1 EQ ~2 km WNW of the summit ML -0.4; Z = 1.3 km 1 EQ ~3 km W of the summit ML -0.5; Z = 1.3 km 1 EQ ~4 km WSW of the summit ML -0.7; Z = 3.4 km 1 EQ ~6 km W of the summit ML -0.7; Z = 6.5 km Iliamna (3 EQs): 1 EQ ~2 km NNE of the summit ML -0.8; Z = 0.9 km 1 EQ ~2 km N of the summit ML -0.8; Z = 2.1 km 1 EQ ~1 km ENE of the summit ML -0.9; Z = 6.9 km Great Sitkin (2 EQs): 1 low frequency EQ ~7 km WNW of the summit ML 1.5; Z = 7.7 km 1 EQ ~1 km W of the summit ML 0.3; Z = -1.8 km Edgecumbe: 1 EQ ~1 km WNW of the summit ML 0.3; Z = 7.6 km Cleveland: 1 EQ ~7 km E of the summit ML 0.3; Z = 10.0 km Katmai: 1 EQ ~4 km SE of the summit ML 0.1; Z = 5.5 km Martin: 1 EQ ~1 km ENE of the summit ML 0.2; Z = 0.8 km Redoubt: 1 EQ ~12 km NE of the summit ML -0.5; Z = 10.1 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454402 _______________________________________________ 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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