Snow storm warning hits Alaska with July ice and wind chills
A late-July snow storm warning left Alaska’s Central Brooks Range under a Winter Weather Advisory, with 2 to 6 inches of snow, light ice glaze, and wind chills near 11°F on Atigun Pass along the Dalton Highway—conditions that matter most for unprepared summer drivers.
Key Takeaways
- The National Weather Service in Fairbanks issued a Winter Weather Advisory for Atigun Pass, Anaktuvuk Pass, Galbraith Lake and Dalton Highway mile posts 232–322.
- Snow was forecast near 2 inches widely and up to 6 inches at higher elevations, plus a light ice glaze and possible freezing drizzle.
- After the advisory expired early Monday, July 27, overnight air near 26°F and north winds gusting to 34 mph pushed wind chills to 11°F.
- Atigun Pass (4,739 feet) is the only year-round road crossing of the Brooks Range, with north grades up to 12 percent and no alternate route.
Summer snow headlines turn heads, but high-latitude mountains above the Arctic Circle can freeze outside classic winter months. The sharper risk is travel on an isolated corridor where help can be far away.
For readers who follow extreme-environment readiness themes, related context lives in our Longevity & Biohacking hub alongside outdoor safety coverage.
Why did a snow storm warning hit during summer?
An Arctic cold front pushed southeast out of the Chukchi Sea into the Central Brooks Range in late July 2026. Precipitation began as rain, briefly mixed, then changed to snow before tapering overnight.
Regional reports citing the National Weather Service say the advisory ran through early Monday, July 27, with reduced visibility from blowing snow and a light ice layer on roads. ColombiaOne noted the same 2-to-6-inch outlook (5 to 15 centimeters) along sections of the Dalton Highway serving Interior Alaska and the North Slope.
How dangerous is Atigun Pass for summer drivers?
Atigun sits at mile post 244 where the Dalton crosses the Continental Divide. Warm July pavement melts the first snow; overnight refreeze turns that water into a glaze. On grades up to 12 percent, a “light” glaze is far riskier than on flat ground.
North winds can blow loose snow across exposed upper switchbacks and cut visibility on the hardest stretch of the climb. There is no cell service across the Dalton’s 414 miles, and Coldfoot is the last fuel stop for 239 miles before Deadhorse.
The same zone was under a Winter Storm Watch for 6 to 12 inches with gusts to 30 mph in early June—its second alert-level snow forecast of the summer before this event.
What should travelers watch after the advisory ends?
Fairbanks forecasters let the advisory lapse at 4:13 a.m. Alaska time Monday. Precipitation diminished, drier North Slope weather followed, and Interior Alaska was expected to climb back into the 70s by midweek. Automated Brooks Range snow gauges still held about 1 to 5 inches on the ground a day later at some sites.
Alaska DOT posts Atigun updates via 511.alaska.gov and roadside message boards. Drivers should check conditions before committing, slow before the grade, leave extra following distance, brake in a straight line, and remember July travelers rarely carry chains, shovels, or winter tires—the gap that turns modest snow into a serious trap.