Alaska Climate Research Center
The glacial lake outburst flood (GLOF) from Suicide Basin occurred on August 13th, exactly a year after last year’s flood. Water levels on the Mendenhall River remained slightly below predictions and below the previous record with a crest of 14.7 feet at the Auke Bay gage. The 2025 GLOF crested at 16.6 feet. This year’s
2026 Mendenhall GLOF Read More »
March 1 marked the beginning of meteorological spring in Alaska. In Fairbanks, we are once again experiencing more than 10 hours of direct sunlight each day — a welcome milestone after the long Arctic winter. The sun climbs higher above the horizon, daylight is rapidly increasing, and there is a subtle but noticeable shift in
Meteorological Spring Has Begun — But Winter Still Has a Firm Grip on Fairbanks Read More »
Note: Please see our annual report for a more comprehensive overview of weather and climate in Alaska in 2025: ACRC Annual Report 2025 2025 temperatures Globally, 2025 will likely come in as the second warmest year on record in a near-tie with 2023 and behind 2024. This would make the past three years (2023, 2024,
Ex-typhoon Halong hit the AK west coast early Sunday morning. Severe impacts have been reported from the Kuskokwim River delta region, with major damage in the communities of Kipnuk, Kwigillingok, and Napakiak. Social media footage shared by residents shows homes floating away in inundated residential areas. The Troopers indicated in a statement that 51 people
Ex-typhoon Halong: Severe storm damage in Western Alaska Read More »
October 9, 2025: The Arctic sea ice has experienced a smaller increase rate for this week of 7.32% (last week’s increase rate was 8.96%), from the level on 10/02/2025 of 5.291 M km2 to 5.709 M km2 for this week. The sea ice extent for 2025 to date remains in 9th place for the lowest sea ice extent for this day of the
Arctic Sea Ice Extent: October 9, 2025 Read More »
October 2, 2025: The Arctic sea ice has experienced a larger increase rate for this week of 8.96% (last week’s increase rate was 2.68%), from the level on 09/25/2025 of 4.817 M km2 to 5.291 M km2 for this week. The sea ice extent for 2025 to date has now risen one more spot to 9th place for the lowest sea ice extent for
Arctic Sea Ice Extent: October 2, 2025 Read More »
September 25, 2025: The Arctic sea ice has experienced a larger increase rate for this week of 2.68% (last week’s increase rate was 0.36%), from the level on 09/18/2025 of 4.688 M km2 to 4.817 M km2 for this week. So, we are now definitely in the sea ice increase season. The sea ice extent for 2025 to date has now risen by two
Arctic Sea Ice Extent: September 25, 2025 Read More »
September 18, 2025: Arctic sea ice has experienced another very small increase rate for this week of 0.36% (last week’s increase rate was 0.09%), from the level on 09/11/2025 of 4.671 M km2 to 4.688 M km2 for this week. So, it looks like we have probably reached that transition point to the sea ice increase season. The sea ice extent for 2025
Arctic Sea Ice Extent: September 18, 2025 Read More »
September 11, 2025: (Eight days since the last post) the Arctic sea ice has experienced a very small increase rate for this week of 0.09% (last week’s decrease rate was 2.95%), from the level on 09/03/2025 of 4.667 M km2 to 4.671 M km2 for this week. The sea ice extent for 2025 to date has now dropped one spot to 11th place
Arctic Sea Ice Extent: September 11, 2025 Read More »
September 3, 2025: (Only six days since the last post) the Arctic sea ice has experienced a lesser decrease rate for this week of 2.95% (last week’s decrease rate was 5.48%), from the level on 08/28/2025 of 4.809 M km2 to 4.667 M km2 for this week. The sea ice extent for 2025 to date remains in 10th place for the lowest sea
Arctic Sea Ice Extent: September 3, 2025 Read More »