Alaska and Arctic Climate Newsletter
Analysis and context for Alaska and Arctic climate, climate change and extreme events in content.
- Indexed issues, last 90 days
- 12
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- Sep 22, 2026
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- Aug 5, 2026
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Rivers Running High in Interior Alaska (opens the original)
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Summary: Frequent late summer/early autumn rains in parts of Interior Alaska have pushed some rivers to the highest levels of record for this late in the season. More than a statistical blip, heavy rain and high river levels just a few weeks before freeze-up can have impacts through the winter, including higher aufeis flow (both on rivers and in steep terrain), more persistent open areas and large areas of unstable shelf ice that form as water levels drop during the winter.Water levels on Interi
Arctic 2026 Sea Ice Minimum (opens the original)
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***September 23 update: NISDC reports the 2026 Arctic sea ice minimum extent at 4.60 million km² occurred September 12, which ties with 2008, 2010 and 2025 for 10th lowest. I’ve changed the ranking paragraph below to match this assessment.*** Sea ice in the northern hemisphere has likely reached the minimum extent for 2026, though as of September 17 the ice extent in a few Arctic regional seas may not have quite reached the low point for the year. In the unlikely event that the Arctic-wide ice e
Alaska August 2026 Climate Summary (opens the original)
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Alaska temperatures in August rebound from the chilly July, but rainfall was again highly variable around the state. For the pan-Arctic view, the summer 2026 climate summary is here, the end-of-August sea ice summary here and the Arctic wildfire recap is here.TemperaturesIn contrast to June and July, August was warmer than normal over nearly all (95 perce
September 2026 News Update (opens the original)
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Just a quick post with some Arctic climate related news.First, in summer 2025, the National Snow and Ice Data Center (not a U.S. Federal agency) lost funding to support the popular Sea Ice Today monthly narrative summary of ice conditions in both the Arctic and Antarctic that was written by NSIDC experts. Happily, funding has now been secured to allow the resumption of the summary, just in time for the approaching Arctic sea ice minimum. <a class="image-link image2" href="https://substackcdn.com
Arctic Summer 2026 Climate Review (opens the original)
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This is the basic climate review for Summer 2026 for the Arctic. The status of sea ice at the end of August is covered here, and a recap of 2026 Arctic wildfire season is here. I’ll add a separate post with the Alaska August and Summer 2026 climate summary.TemperaturesSummer 2026 average temperatures around the Arctic show remarkable warmth in parts of Siberia (some areas had a three-month average more than 5°C above normal) and in the
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