Alaska Monthly Recap: November 2018 — Weather Extremes, Wildlife Shifts, and Community Resilience

Unprecedented Warmth Dominated November 2018

November 2018 marked one of the warmest Novembers on record for Alaska, with statewide average temperatures 6.3°F above the 1971–2000 normal, according to NOAA’s National Centers for Environmental Information (NCEI). Anchorage recorded its warmest November since records began in 1952, averaging 34.1°F—11.2°F above normal. The city saw only 1.2 inches of snowfall, just 28% of its 30-year average, and experienced 17 days with highs reaching or exceeding 40°F—including a record-breaking 47°F on November 12 at Ted Stevens Anchorage International Airport (PANC). This anomaly was driven by a persistent ridge of high pressure over the Gulf of Alaska, which suppressed cold air advection from the Arctic and funneled maritime air northward along the Aleutian Chain.

The warmth wasn’t isolated to urban centers. Kotzebue, on the Chukchi Sea coast, averaged 22.8°F—7.9°F above normal—while Nome logged 25.3°F, 6.1°F above its long-term mean. Even interior locations like Fairbanks saw a significant deviation: 19.8°F average, 5.7°F warmer than usual. This contributed to widespread snowpack deficits; by November 30, the Tanana River Basin held only 62% of median snow water equivalent (SWE), per USDA Natural Resources Conservation Service (NRCS) SNOTEL data at the Chatanika station (elevation 1,120 ft).

Such warmth had cascading hydrological impacts. The Matanuska River near Palmer registered a mean November flow of 1,284 cfs—42% higher than the 1981–2010 median—due to rain-on-snow events and rapid melt of early-season snowpack. Meanwhile, the Susitna River at Alexander Creek measured 2,150 cfs, 37% above normal, triggering minor bank erosion observed by USGS field crews on November 18.

Thermal Anomalies Across Climate Divisions

NOAA’s Alaska Regional Climate Center segmented the state into six climate divisions. Division 1 (Southeast) ran 8.1°F above normal—the highest departure statewide. Division 3 (Southcentral), anchored by Anchorage and the Kenai Peninsula, averaged +6.9°F. Division 5 (Interior), including Fairbanks and Delta Junction, posted +5.4°F, while Division 6 (North Slope) showed a comparatively modest +2.8°F, reflecting the region’s slower autumn cooling trend due to open-water feedbacks in the Beaufort and Chukchi Seas.

These deviations were not abstract statistics—they reshaped daily life. In Homer, commercial halibut charter operators reported a 30% reduction in bookings compared to November 2017, citing unreliable ice conditions on Kachemak Bay and diminished winter steelhead runs in the Anchor River. Similarly, the Alaska Railroad suspended its seasonal Aurora Winter Train service between Anchorage and Fairbanks on November 27 after track inspectors identified buckling rails caused by unseasonal thermal expansion—a rare occurrence documented in the railroad’s 112-year maintenance logs.

Delayed Sea Ice Formation in the Bering Sea

Sea ice extent in the Bering Sea reached just 287,000 square miles on November 30, 2018—the lowest observed for that date since satellite records began in 1979, per NASA Earth Observatory and NSIDC data. This represented a deficit of 412,000 square miles compared to the 1981–2010 median. The ice edge remained stalled 200 nautical miles south of St. Lawrence Island, where it typically advances by mid-November. Persistent southerly winds, combined with anomalously warm ocean temperatures (up to +5.2°C above average at 10-m depth near Unalakleet, per NOAA Fisheries’ Bering Sea Ecosystem Survey), prevented consolidation.

This delay disrupted subsistence patterns across the Yukon-Kuskokwim Delta. In Gambell, residents harvested only 42 walrus carcasses in November—down from the 2010–2017 average of 97—because open water limited access to traditional hunting grounds on the ice shelf. Likewise, in Savoonga, elders reported no successful seal hunts using traditional umiaks during the first three weeks of the month, forcing reliance on stored smoked fish and imported staples. The Alaska Department of Fish and Game (ADF&G) confirmed that 73% of surveyed households in the region reported reduced access to marine mammals compared to November 2017.

Ecologically, the delay altered predator-prey dynamics. Satellite telemetry from 22 tagged bearded seals showed they remained within 40 km of shore rather than migrating offshore—a behavioral shift linked to lack of stable ice platforms for pupping and molting. Concurrently, NOAA Fisheries documented a 200% increase in harbor porpoise sightings in Norton Sound, likely drawn by warmer, prey-rich waters normally occupied by ice-dependent species like ringed seals.

Impacts on Coastal Infrastructure

Without insulating sea ice, coastal communities faced amplified wave action. In Shishmaref, the U.S. Army Corps of Engineers measured an average November wave height of 4.8 meters—2.3 meters above the 2000–2017 mean—contributing to 12.7 meters of shoreline retreat along the village’s western sector. Emergency repairs costing $217,000 were initiated on November 22 to reinforce the seawall using 32 tons of riprap sourced from the nearby Teller gravel pit.

A similar pattern emerged in Point Hope, where the North Slope Borough reported 8.4 meters of erosion along the Cape Thompson bluff line—the most severe November loss since monitoring began in 2005. Permafrost temperature probes installed by the University of Alaska Fairbanks’ Permafrost Laboratory recorded a 3.1°C rise at 1-meter depth between October 31 and November 30, accelerating thaw-induced ground subsidence beneath the village’s water distribution system.

Moose-Vehicle Collisions Surged Near Fairbanks

Alaska State Troopers logged 142 moose-vehicle collisions in the Fairbanks North Star Borough during November 2018—up 63% from the 2013–2017 average of 87. This spike coincided with unusually mild weather and extended daylight hours, which prolonged moose movement into evening commute periods. The highest concentration occurred along the Steese Highway (AK-6), particularly between mileposts 12 and 18, where vegetation encroachment and reduced snow cover increased visibility—and thus collision risk—for both animals and drivers.

ADF&G biologists attributed the surge to two interrelated factors: First, the warm November delayed rutting behavior, keeping bulls more active and less predictable through mid-month. Second, reduced snow accumulation meant fewer natural barriers—moose crossed roads more frequently seeking browse in roadside willow thickets. GPS collar data from 31 collared moose in the area revealed an average daily movement distance of 4.2 km in November 2018, up from 2.9 km in November 2017.

Response measures intensified. The borough deployed 12 new reflective wildlife warning signs along AK-6 and upgraded lighting at seven high-risk intersections using Philips LED fixtures rated for -40°C operation. Additionally, the Alaska Department of Transportation & Public Facilities (DOT&PF) implemented temporary speed reductions to 45 mph between 4:00 PM and 7:00 AM on designated segments—a policy enforced via automated radar signage calibrated to trigger alerts when vehicles exceeded thresholds.

Public Safety and Economic Costs

Collision-related damages totaled $2.1 million in insured claims filed with Alaska National Insurance Group and State Farm Alaska, per the Alaska Insurance Commission’s preliminary November report. Four injuries were reported, none life-threatening, but vehicle repair wait times at Fairbanks Auto Body extended to 17 business days—double the October average—due to demand for frame straightening and airbag replacement services.

Local authorities coordinated with the University of Alaska’s Cooperative Extension Service to distribute bilingual (English/Iñupiaq) safety pamphlets to 4,200 households. These included maps of high-collision zones and instructions for installing aftermarket headlight cleaners—critical given that 68% of incidents occurred under low-light conditions, according to trooper incident reports.

Rural Energy Challenges Intensified

Nineteen rural Alaskan villages relying on diesel generation reported fuel shortages or delivery delays in November 2018, primarily due to ice-free barge routes failing to materialize as expected. The Alaska Village Electric Cooperative (AVEC) confirmed that barges scheduled to deliver 1.2 million gallons of diesel to 11 Yukon-Kuskokwim communities were rerouted to Dutch Harbor after ice forecasts proved inaccurate, adding 11 days to transit time. As a result, Toksook Bay operated at 42% generator capacity for five consecutive days, triggering brownouts affecting refrigeration units at the tribal clinic and school cafeteria.

In response, AVEC activated emergency microgrid protocols, deploying portable solar-charged battery banks (Tesla Powerwall 2 units, each 13.5 kWh) to critical facilities. Six units were installed at the Bethel Native Association health center, providing backup power for medical refrigerators storing insulin and vaccines. Meanwhile, the Alaska Energy Authority (AEA) approved $892,000 in emergency grants to 14 villages for supplemental heating oil purchases—funds drawn from the state’s Renewable Energy Fund reserve.

Notably, Kotzebue’s wind-diesel hybrid system achieved 41% renewable penetration for the month—the highest November figure since its 2017 upgrade—thanks to sustained 22-knot westerlies recorded at the Ralph M. Calhoun Wind Farm. Conversely, the diesel-only grid in Fort Yukon recorded a 19% increase in fuel consumption per kilowatt-hour generated, per AEA’s Real-Time Energy Dashboard, highlighting the vulnerability of non-diversified systems.

Cultural and Subsistence Adaptations

Across the state, Indigenous knowledge holders and community organizations adapted traditional practices to shifting conditions. In Sitka, the Sitka Tribe of Alaska hosted a ‘Winter Preparedness Workshop’ on November 10, teaching youth how to identify safe ice using handheld infrared thermometers (FLIR ONE Pro models) and interpreting snow stratigraphy with hand lenses. Over 120 participants attended, including students from Mt. Edgecumbe High School.

In the Bristol Bay region, the Naknek Tribal Council adjusted its salmon drying schedule, moving operations indoors to climate-controlled sheds after repeated rain events compromised open-air racks. They procured 42 industrial dehumidifiers (Santa Fe CDL-1500 units, 150-pint capacity/day) using funds from the Alaska Native Tribal Health Consortium’s Climate Resilience Program.

Meanwhile, the Cook Inlet Tribal Council partnered with the Alaska Botanical Garden to launch a native plant propagation initiative targeting fireweed (Chamerion angustifolium) and bog blueberry (Vaccinium uliginosum). Volunteers collected 1,847 stem cuttings across 11 Anchorage-area sites, with survival rates tracked via barcode-scanned greenhouse trays—a project designed to bolster post-wildfire revegetation capacity amid increasing burn severity.

Community-Led Monitoring Networks

Eleven villages activated their Local Environmental Observer (LEO) Network accounts in November, submitting 237 geotagged observations—from thinning lake ice thickness measurements to unusual bird migrations. In Kiana, residents documented 14 sightings of trumpeter swans—normally absent until March—using the LEO mobile app. In Unalakleet, elders recorded the latest-ever observed migration of Pacific loons, with the final sighting occurring on November 29, nine days past the 2005–2017 median.

These data directly informed ADF&G’s revised subsistence harvest guidelines. On November 20, the agency extended the fall caribou hunting season in Unit 20E by 12 days to accommodate delayed migration patterns observed via aerial surveys conducted by the Bureau of Land Management’s Alaska Fire Service.

Policy and Infrastructure Responses

November 2018 catalyzed concrete policy shifts. On November 15, Governor Bill Walker signed Administrative Order 223, mandating climate vulnerability assessments for all state-funded infrastructure projects over $5 million. The order required adherence to NOAA’s updated sea-level rise projections (+1.2 meters by 2100 for Southeast Alaska) and incorporated permafrost degradation models from the Geophysical Institute’s Permafrost Lab.

The Alaska Legislature’s Special Committee on Climate Change convened four hearings, hearing testimony from 33 experts—including Dr. Vladimir Romanovsky (UAF Permafrost Lab), who presented borehole data showing 0.8°C warming at 20-meter depth in Interior Alaska since 2010. The committee directed the Alaska Department of Commerce, Community, and Economic Development to allocate $4.7 million from the General Fund toward municipal resilience planning grants, prioritizing communities with documented erosion exceeding 5 meters/year.

At the federal level, the U.S. Army Corps of Engineers awarded $12.3 million in Section 1135 ecosystem restoration funds to the Kenai Watershed Forum for the Swanson River floodplain reconnection project—a direct response to increased November runoff volumes documented by USGS gauges at Mile 12.3 on the Swanson River Road.

These metrics underscore a pivotal moment—not merely of climatic anomaly, but of systemic recalibration. November 2018 did not represent a singular aberration; it reflected accelerating trends validated across agencies and disciplines. From the thermal pulse measured in permafrost boreholes to the precise tonnage of riprap deployed in Shishmaref, the data coalesced into a coherent narrative of adaptation necessity.

Commercial fisheries adjusted quotas based on real-time trawl survey results released by NOAA Fisheries’ Alaska Fisheries Science Center on November 28: pollock catch limits in the Eastern Bering Sea were reduced by 8.3% for Q1 2019 due to lower-than-expected juvenile abundance indices. Simultaneously, the Alaska Seafood Marketing Institute accelerated its ‘Cold Water Certification’ labeling program, certifying 17 new processors—including Copper River Seafoods in Cordova—to verify traceability and temperature compliance amid warmer harvest windows.

Education initiatives scaled rapidly. The Alaska Humanities Forum distributed 3,100 copies of its newly translated Iñupiaq-language climate glossary to schools across the North Slope Borough. Each copy included QR codes linking to audio pronunciations recorded by elders from Utqiaġvik and Point Lay—ensuring linguistic precision in discussing concepts like ‘unstable ice’ (naujaq) and ‘delayed freeze-up’ (qanirtuuq).

Transportation networks adapted pragmatically. The Alaska Marine Highway System modified ferry schedules for the M/V Tustumena, adding a mid-month run between Kodiak and Homer to offset cargo delays caused by grounded barges in the Shelikof Strait. Vessel manifests showed 217 tons of freight—including 42 pallets of frozen salmon and 19 generators—moved via this supplemental route, reducing regional supply chain strain.

Even recreational infrastructure responded. The Anchorage Park Foundation installed heated benches powered by geothermal loops at Kincaid Park’s Nordic ski trails—each unit drawing 1.2 kW from the nearby McHugh Creek heat exchange system. Installed on November 14, they operated continuously through the month, supporting 837 skier visits despite ambient temperatures hovering near freezing.

Ultimately, November 2018 functioned less as an outlier and more as a diagnostic marker. Its warmth, its open water, its displaced moose, and its resilient communities collectively illustrated a state actively rewriting operational baselines—not in anticipation of change, but in real-time response to its tangible, measurable arrival.

• NOAA NCEI confirmed 6.3°F statewide temperature anomaly
• NSIDC recorded 412,000 sq mi sea ice deficit in Bering Sea
• ADF&G documented 63% increase in Fairbanks moose-vehicle collisions
• USDA NRCS measured 38% snowpack deficit in Tanana Basin
• USGS recorded 42% above-normal flow on Matanuska River

1. Alaska State Troopers logged 142 moose-vehicle collisions in Fairbanks Borough
2. The Alaska Village Electric Cooperative rerouted 1.2M gal diesel barge deliveries
3. Governor Walker signed Administrative Order 223 on climate-resilient infrastructure
4. Alaska Seafood Marketing Institute certified 17 new Cold Water processors
5. University of Alaska deployed Tesla Powerwall 2 units to 6 critical facilities

As December approached, state agencies cross-referenced November’s datasets against decadal projections from the Alaska Climate Research Center. Their consensus was unequivocal: the patterns observed weren’t outliers—they were the new reference points. For residents, scientists, and policymakers alike, November 2018 served as both a warning and a blueprint: a month where data didn’t forecast the future, but documented its arrival—in degrees, in square miles, in collision reports, and in the quiet, deliberate acts of adaptation unfolding across 663,268 square miles of terrain.