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

[AVO-OPS] AVO RSDB- 23 Dec 2025 satellite report
by Jordan Lubbers via Avo_ops 23 Dec '25

23 Dec '25

Associated Keywords: Cloud cover: partly cloudy; Associated Keywords: Cloud cover: partly cloudy; mostly clear; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62931 : 375mAKCL-MIR-d20251223t1333889997Z.png Associated Keywords: Elevated surface temperatures: moderately 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: 23 Dec 2025 18:10 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 - 12/22/2025
by logs--- via Avo_ops 23 Dec '25

23 Dec '25

Posted by: cheryl searcy (csearcy(a)usgs.gov), Tue Dec 23, 2025 05:38 (0538 UTC)-- "Significant" located earthquakes for December 22, 2025: (picking by Scott Stihler) Spurr: 3; Edgecumbe: 1; Katmai: 1; Makushin: 1; Martin: 1; Snowy: 1 ======================== Spurr (3 EQs): 1 EQ ~5 km WSW of the summit ML -0.1; Z = 1.2 km 1 EQ ~9 km ENE of the summit ML -0.3; Z = -2.5 km 1 EQ ~1 km E of the summit ML -0.5; Z = 1.1 km Edgecumbe: 1 EQ ~22 km W of the summit ML 1.2; Z = 18.2 km Katmai: 1 EQ ~3 km W of the summit ML 0.3; Z = 3.2 km Makushin: 1 EQ ~20 km E of the summit ML 0.9; Z = 7.8 km Martin: 1 EQ ~16 km NW of the summit ML 0.5; Z = 4.2 km Snowy: 1 EQ ~13 km NW of the summit ML 0.9; Z = 3.9 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454478 _______________________________________________ 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 Meeting notes for December 22, 2025
by logs--- via Avo_ops 22 Dec '25

22 Dec '25

Posted by: cheryl searcy (csearcy(a)usgs.gov), Mon Dec 22, 2025 20:35 (2035 UTC)-- AVO Meeting notes for December 22, 2025 Great Sitkin: Orange Shishaldin: Yellow Ahyi: Yellow SIC: Matt Haney Acting CS: Jessica Larsen Duty Scientist: Cheryl Searcy Duty Remote Sensor: Jordan Lubbers Duty Seismologist: Jay Wellik CNMI duty seismologist: Jay Wellik CNMI Remote Sensor: Jordan Lubbers Primary alarms: Jay Wellik Secondary alarms: Cheryl Searcy AVO radio: Lee Zirnheld DUTY SCIENTIST REPORT– Tim Orr + GREAT SITKIN (Orange/Watch): • Elevated surface temps were seen every day in VIIRS imagery. • Weak steaming visible one day in webcam views. • Weak seismicity throughout the week. + SHISHALDIN (Yellow/Advisory): • Seismicity remained elevated with frequent small earthquakes. Infrasound signals were detected occasionally when the wind noise was sufficiently low. • Satellite and webcam views showed ongoing gas emissions when views were clear. • Very weak thermal anomaly visible in mid-IR imagery on several days. • No SO2 (from Taryn’s report) • Hannah Dietterich reported that MAXAR images are no longer available due to government cutbacks. There have been no changes seen in Radar imagery. + KATMAI (Green/Normal): • Resuspended ash blowing toward Kodiak much of the week. SIGMETs on several days – the last was on Saturday. • Chris Waythomas asked about flight impacts in Kodiak due to the resuspended ash. It looks like SIGMETS have been to the south. + CNMI/AHYI (Yellow/Advisory): • Nothing seen in satellite views, which were mostly cloudy. • A couple of low-confidence detections at Wake Island. + OTHER: • Entire network went down Saturday afternoon and was out for over 24 hours. Fixed this morning. There will be an after-action meeting to address prevention, contingency plans for future issues and to review notification scenarios. The outage was reported in the AVO daily report on Sunday. Recommendation to conduct a mini-calldown, mainly to NOAA and FAA. NET OPS/FIELDWORK: Ellie Boyce + Color Code: • Great Sitkin – All stations working. • Shishaldin – All stations working except some SSBA data gaps. + Network, Multi-Station and Array Outages: • Data outage over this weekend due to network issues • Port Heiden (#aniakchak, #veniaminof (north side) - 2025-12-13 07:07:08 UTC Power outage is ongoing. + Single Station Issues • Wrangell – WAZA continues to be very gappy. Tolsona sites continue to have minor data gaps at IRIS. AVO Winston copy complete. • Iliamna – ILLG remains out, ILCB is newly out, ILSW power getting low. • Shishaldin – SSBA/AV36 and ISNN/AV38 low power, GNSS powered off at both stations to conserve power for seismic data. • Westdahl – WECS seismic offline to conserve power for GNSS and radios. • Akutan -LVA out due to low voltage. • Okmok – OKAK and OKWE no telemetry. • Bogoslof – BOGO completely out last week, it was on back on briefly on 11/12 and 11/13. • Adak – Infrasound element 6 is not working and element 2 reported as having reversed polarity. • Little Sitkin -Gappy data and outages from LSNW and LSSA probably due to icing on LSSA radio antennas. + Matt Haney asked about the Aniakchak/partial Veniaminof outage. If data cannot be restored soon, we will need to move Aniakchak to unassigned. Ellie noted that the backup generator is no longer being maintained by the FAA. She is working with a local resident to try to restore power. OPEN ANNOUNCEMENTS + ADGGS – Scott Crass • Lee Zirnheld is in today and will be recording AVO radio for posting on Friday. • Ian Brewster has been conducting inventory at the warehouse. • Dain Harmon and Scott are around this week. • Dain and Scott have been working on a bug in the Geochem search interface. They will be writing up a review of the bug fix. • Cheryl Cameron is in today and out the rest of the week. + UAF – Ronni Grapenthin • Jessica Larsen is taking over Acting Coordinating Scientist after the meeting today until David Fee’s return on Dec. 27. + AVO South – Matt Haney • Reminder to send in non-network field proposals. They are due Jan. 9. + USGS – Matt Haney • Matt received an email on working capital fund contributions, and he will forward it on. Deadline is January 15. • Thank you to everyone for completing the EPAPA on time. Deadline for FY26 is January 9. • Please make sure to make your refundable travel plans for the CoMeet. Some folks still have not had their credit cards reinstated. • Tim Orr will be out of the office today after the meeting through January 31. Jordan Lubbers will be covering a few days of his remote sensing duties. • Tom Parker will be taking a few short days this week. • Anthony Benavidez will be taking a few days off this week. Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454474 _______________________________________________ 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- 22 Dec 2025 satellite report
by Jordan Lubbers via Avo_ops 22 Dec '25

22 Dec '25

Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62927 : 375mAKKN-MIR-d20251222t1413737784Z.png Associated Keywords: Elevated surface temperatures: barely elevated; Cloud cover: mostly clear; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62928 : shishaldin_brpk-20251222T033100Z.jpg Associated Keywords: Volcanic clouds: steam/water; Cloud cover: partly cloudy; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62929 : cleveland_cles-20251221T231500Z.jpg https://www.avo.alaska.edu/admin/rsdb/files/show/62930 : 375mAKCL-MIR-d20251222t1323441042Z.png Associated Keywords: Volcanic clouds: steam/water; Elevated surface temperatures: moderately 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: 02 Dec 2025 20:01 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- Reply to: Fee traveling 12/14-27, Ronni and Jessica Acting CS
by logs--- via Avo_ops 22 Dec '25

22 Dec '25

Posted by: Ronni Grapenthin (rgrapenthin(a)alaska.edu), Mon Dec 22, 2025 20:05 (2005 UTC)-- Jess has now taken over Acting CS from me, phone is forwarded. Thanks Jess! Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454472 _______________________________________________ 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 - 12/20/2025
by logs--- via Avo_ops 22 Dec '25

22 Dec '25

Posted by: cheryl searcy (csearcy(a)usgs.gov), Mon Dec 22, 2025 19:48 (1948 UTC)-- "Significant" located earthquakes for December 20, 2025: (picking by Scott Stihler) Makushin: 25; Iliamna: 8; Edgecumbe: 2; Gareloi: 2; Great Sitkin: 2; Martin: 2; Trident: 2; Westdahl: 1 ======================== Makushin (25 EQs): 1 EQ ~20 km E of the summit ML 0.5; Z = 9.1 km 1 EQ ~20 km E of the summit ML 0.5; Z = 8.0 km 1 EQ ~20 km E of the summit ML 0.4; Z = 8.4 km 1 EQ ~20 km E of the summit ML 0.4; Z = 7.5 km 1 EQ ~20 km E of the summit ML 0.4; Z = 8.2 km 1 EQ ~20 km E of the summit ML 0.3; Z = 7.2 km 1 EQ ~20 km E of the summit ML 0.3; Z = 7.9 km 1 EQ ~19 km E of the summit ML 0.1; Z = 7.8 km 1 EQ ~20 km E of the summit ML 0.1; Z = 7.6 km 1 EQ ~20 km E of the summit ML 0.0; Z = 8.3 km 1 EQ ~20 km E of the summit ML 0.0; Z = 6.9 km 1 EQ ~20 km E of the summit ML 0.0; Z = 7.8 km 1 EQ ~18 km E of the summit ML -0.0; Z = 7.5 km 1 EQ ~20 km E of the summit ML -0.0; Z = 7.1 km 1 EQ ~20 km E of the summit ML -0.0; Z = 7.6 km 1 EQ ~20 km E of the summit ML -0.0; Z = 7.0 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.8 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.7 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.8 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.5 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.6 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.6 km 1 EQ ~1 km SE of the summit ML -0.4; Z = 5.2 km 1 EQ ~19 km E of the summit ML -0.5; Z = 8.1 km 1 EQ ~20 km E of the summit ML -0.5; Z = 7.4 km Iliamna (8 EQs): 1 EQ ~5 km E of the summit ML 0.2; Z = 2.9 km 1 EQ ~28 km NE of the summit ML 0.2; Z = 10.6 km 1 EQ ~27 km NE of the summit ML 0.2; Z = 11.6 km 1 EQ ~0 km S of the summit ML -0.2; Z = -2.3 km 1 EQ ~3 km NE of the summit ML -0.4; Z = 2.6 km 1 EQ ~6 km SSE of the summit ML -0.9; Z = 1.1 km 1 EQ ~2 km SSW of the summit ML -1.0; Z = -2.2 km 1 EQ ~4 km SSW of the summit ML -1.0; Z = 1.6 km Edgecumbe (2 EQs): 1 EQ ~3 km N of the summit ML -0.3; Z = 6.0 km 1 EQ ~3 km NNW of the summit ML -0.3; Z = 6.1 km Gareloi (2 EQs): 1 EQ ~5 km SE of the summit ML 0.6; Z = 10.5 km 1 EQ ~2 km WSW of the summit ML 0.6; Z = 7.7 km Great Sitkin (2 EQs): 1 low frequency EQ ~9 km W of the summit ML 0.5; Z = 4.6 km 1 low frequency EQ ~2 km WNW of the summit ML 0.5; Z = -1.8 km Martin (2 EQs): 1 EQ ~2 km E of the summit ML 0.1; Z = 0.5 km 1 EQ ~2 km E of the summit ML 0.0; Z = 0.8 km Trident (2 EQs): 1 EQ ~1 km NNE of the summit ML 0.7; Z = 4.8 km 1 EQ ~2 km W of the summit ML -0.6; Z = 1.0 km Westdahl: 1 EQ ~1 km NW of the summit ML 0.3; Z = 1.6 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454471 _______________________________________________ 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- 21 Dec 2025 satellite report
by Tim Orr via Avo_ops 21 Dec '25

21 Dec '25

Associated Keywords: Elevated surface temperatures: barely elevated; Cloud cover: cloudy; Associated Keywords: Volcanic clouds: steam/water; Elevated surface temperatures: barely elevated; Cloud cover: partly cloudy; Associated Images: https://www.avo.alaska.edu/admin/rsdb/files/show/62926 : 375mAKKA-MIR-d20251220t2105180080Z.png Associated Keywords: Volcanic clouds: ash signal; Cloud cover: mostly clear; <b>Cleveland:</b> Moderately elevated surface temps in mid-IR images, and a weak gas plume visible in webcam views. ___________________________________ 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: 21 Dec 2025 14:33 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 - 12/19/2025
by logs--- via Avo_ops 20 Dec '25

20 Dec '25

Posted by: cheryl searcy (csearcy(a)usgs.gov), Sat Dec 20, 2025 21:02 (2102 UTC)-- "Significant" located earthquakes for December 19, 2025: (picking by Scott Stihler) Makushin: 24; Spurr: 7; Iliamna: 5; Cleveland: 2; Great Sitkin: 2; Katmai: 2; Novarupta: 2; Fourpeaked: 2; Edgecumbe: 1; Gareloi: 1; Redoubt: 1; Ukinrek Maars: 1 ======================== Makushin (24 EQs): 1 EQ ~20 km E of the summit ML 3.5; Z = 8.5 km 1 EQ ~20 km E of the summit ML 3.2; Z = 8.6 km 1 EQ ~20 km E of the summit ML 1.0; Z = 7.7 km 1 EQ ~20 km E of the summit ML 0.6; Z = 8.5 km 1 EQ ~19 km E of the summit ML 0.3; Z = 7.2 km 1 EQ ~20 km E of the summit ML 0.3; Z = 8.5 km 1 EQ ~20 km E of the summit ML 0.1; Z = 7.5 km 1 EQ ~19 km E of the summit ML 0.1; Z = 8.1 km 1 low frequency EQ ~2 km SW of the summit ML 0.0; Z = 7.4 km 1 EQ ~20 km E of the summit ML 0.0; Z = 7.3 km 1 EQ ~20 km E of the summit ML 0.0; Z = 8.0 km 1 EQ ~20 km E of the summit ML -0.0; Z = 7.3 km 1 EQ ~20 km E of the summit ML -0.0; Z = 7.5 km 1 EQ ~2 km SE of the summit ML -0.0; Z = 6.6 km 1 EQ ~20 km E of the summit ML -0.1; Z = 7.5 km 1 EQ ~20 km E of the summit ML -0.1; Z = 6.8 km 1 EQ ~20 km E of the summit ML -0.2; Z = 7.7 km 1 EQ ~20 km E of the summit ML -0.2; Z = 7.2 km 1 EQ ~2 km ESE of the summit ML -0.2; Z = 4.6 km 1 EQ ~21 km SE of the summit ML -0.3; Z = 8.5 km 1 EQ ~20 km E of the summit ML -0.3; Z = 7.4 km 1 EQ ~19 km ESE of the summit ML -0.5; Z = 8.0 km 1 EQ ~3 km ESE of the summit ML -0.6; Z = 4.6 km 1 EQ ~20 km E of the summit ML -0.7; Z = 7.2 km Spurr (7 EQs): 1 EQ ~30 km S of the summit ML 0.3; Z = 12.1 km 1 EQ ~28 km S of the summit ML 0.0; Z = 14.0 km 1 EQ ~24 km ESE of the summit ML -0.0; Z = 18.0 km 1 EQ ~4 km N of the summit ML -0.1; Z = 3.1 km 1 moderately deep low frequency EQ ~6 km SE of the summit ML -0.5; Z = 19.3 km 1 EQ ~14 km S of the summit ML -0.5; Z = 4.5 km 1 EQ ~13 km S of the summit ML -0.6; Z = 4.2 km Iliamna (5 EQs): 1 EQ ~0 km S of the summit ML -0.3; Z = -1.2 km 1 EQ ~4 km S of the summit ML -0.6; Z = 5.3 km 1 EQ ~3 km S of the summit ML -0.7; Z = 0.8 km 1 EQ ~1 km NE of the summit ML -0.8; Z = 3.0 km 1 EQ ~2 km SW of the summit ML -1.0; Z = 1.0 km Cleveland (2 EQs): 1 EQ ~6 km SSE of the summit ML 0.5; Z = 8.3 km 1 EQ ~4 km S of the summit ML 0.3; Z = 12.1 km Great Sitkin (2 EQs): 1 low frequency EQ ~8 km N of the summit ML 1.2; Z = 5.7 km 1 EQ ~9 km N of the summit ML 0.7; Z = 7.6 km Katmai (2 EQs): 1 EQ ~3 km SW of the summit ML 0.3; Z = 2.6 km 1 EQ ~1 km SSE of the summit ML 0.0; Z = 2.5 km Novarupta (2 EQs): 1 EQ ~4 km SSW of the 1912 dome ML 0.1; Z = 4.4 km 1 EQ ~0 km SW of the 1912 dome ML -1.1; Z = 4.6 km Fourpeaked (2 EQs): 1 EQ ~5 km WSW of the summit ML 1.6; Z = 10.7 km 1 EQ ~10 km SW of the summit ML 0.7; Z = 9.0 km Edgecumbe: 1 EQ ~1 km WNW of the summit ML 0.1; Z = 7.8 km Gareloi: 1 EQ ~2 km NW of the summit ML 0.4; Z = 6.6 km Redoubt: 1 EQ ~3 km N of the summit ML -0.6; Z = 3.9 km Ukinrek Maars: 1 EQ ~29 km NNE of the summit ML 0.3; Z = 6.9 km Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454462 _______________________________________________ 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- 20 Dec 2025 satellite report
by Tim Orr via Avo_ops 20 Dec '25

20 Dec '25

Associated Keywords: Elevated surface temperatures: barely elevated; Cloud cover: cloudy; partly cloudy; Associated Keywords: Volcanic clouds: steam/water; Elevated surface temperatures: barely elevated; Cloud cover: partly cloudy; mostly clear; <b>Cleveland:</b> Moderately elevated summit thermal anomaly seen in nearly all VIIRS mid-IR images over the past 24 hours. Small, normal-looking plume visible in webcam views. _____________________________________ 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: 20 Dec 2025 14:51 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- Reply to: Matt Loewen Acting AVO SIC Dec. 15-19
by logs--- via Avo_ops 20 Dec '25

20 Dec '25

Posted by: Matthew Haney (mhaney(a)usgs.gov), Sat Dec 20, 2025 18:37 (1837 UTC)-- I've returned to Anchorage and am resuming SIC duties. Thanks to Matt for acting while I was away. Attachments: This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454458 _______________________________________________ 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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