Urgent Winter Storm Warning: Up to 15 Inches Ahead

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A winter storm warning is in effect for parts of Alaska, where forecasters expect up to 15 inches of snow, rapidly deteriorating visibility, and difficult driving conditions through Friday. The National Weather Service says the heaviest snowfall will arrive overnight, creating serious hazards along major highways and mountain routes.

Winter Storm Warning Brings Up to 15 Inches of Snow

NWS Anchorage issued the warning for the Northern Susitna Valley, including the Parks Highway corridor through Broad Pass, the Denali Highway, and Chul­tina. The alert remains active from 5 p.m. EDT Thursday through 6 p.m. EDT Friday.

Total snowfall is expected to reach between 7 and 15 inches. Several inches may accumulate before the warning officially begins, with light snow developing first and intensifying Thursday afternoon. The most powerful bands are expected Thursday night into Friday morning.

The Parks Highway is a particularly important route because it connects Anchorage and Fairbanks. Snowfall rates could overwhelm road crews temporarily, while blowing snow and limited visibility may make it difficult for drivers to identify lane markings, oncoming traffic, or slower vehicles.

Critical Visibility Threats for Alaska Drivers

Forecasters warn that visibility could fall to one-quarter mile or less during the heaviest snow. That distance equals roughly 1,320 feet, but conditions may worsen suddenly as intense snow bands move across the road.

Alaska’s Department of Transportation and Public Facilities advises motorists to switch on their headlights manually. Daytime running lights may illuminate the front of a vehicle without turning on the taillights, making a car harder to see from behind during a whiteout.

• Turn on headlights and taillights before entering heavy snow.
• Reduce speed and leave significantly more space for stopping.
• Stay at least 200 feet behind snowplows.
• Never pass snow-removal equipment on the right.
• Check current road conditions before starting a trip.

Snowplows can create temporary whiteout conditions, particularly for vehicles following too closely. The safest approach is to slow down, maintain a generous following distance, and wait for improved visibility before attempting to pass.

Snow Could Change to Rain and Create Slush

Conditions may shift Friday afternoon as temperatures climb above freezing. Snow could mix with or change to rain before the warning ends, leaving wet slush over newly fallen snow.

That transition may create another dangerous phase of the storm. Wet roads can increase stopping distances, while melting snow may refreeze as temperatures fall. Bridges and overpasses are often the first surfaces to develop ice, even when nearby pavement appears merely wet.

Drivers should be especially cautious when approaching curves, downhill sections, intersections, and shaded areas. Sudden braking or sharp steering can cause a vehicle to lose traction on slush or ice.

Powerful Preparedness Advice Before Travel

The Alaska DOT&PF recommends checking road conditions before leaving and delaying unnecessary travel when visibility becomes dangerously low. Motorists who must drive should carry emergency supplies in case a collision, road closure, or mechanical problem causes a lengthy delay.

Recommended items include an extra flashlight, food, drinking water, warm clothing, blankets, a charged phone, and basic emergency equipment. Keeping the fuel tank reasonably full is also wise during a major snow event, particularly on isolated highway routes.

Officials point drivers toward Alaska’s 511 road information service for current updates on closures, crashes, plowing activity, and changing conditions. Because conditions can change rapidly, checking the forecast only once may not be enough for anyone planning a long trip.

What the Winter Storm Warning Means for Travelers

A winter storm warning indicates that significant snow and dangerous travel conditions are occurring or expected soon. It is more urgent than a winter weather advisory and means motorists should carefully consider whether travel is necessary.

For residents and commercial drivers along the Parks Highway, the storm could affect commuting, freight deliveries, school transportation, and emergency response. The combination of heavy snow, poor visibility, slush, and ice may continue to create hazards even after snowfall rates begin to decline.

The warning is scheduled to end Friday evening, but drivers should not assume roads will immediately return to normal. Snow-clearing operations, standing water, and icy surfaces may remain after the storm moves on.

Frequently Asked Questions

Where is the winter storm warning in effect?

The warning covers Alaska’s Northern Susitna Valley, including the Parks Highway through Broad Pass, the Denali Highway, and Chul­tina.

How much snow is expected?

Forecasters expect total accumulation of 7 to 15 inches, with the heaviest snowfall arriving Thursday night into Friday morning.

When will driving conditions be worst?

The most dangerous conditions are expected during the overnight hours and Friday morning, when heavy snow and visibility of one-quarter mile or less may occur.

Could the snow turn into rain?

Yes. Temperatures may rise above freezing Friday afternoon, allowing snow to mix with or change to rain and produce wet slush.

What should drivers keep in their vehicles?

Drivers should carry a flashlight, food, water, warm clothing, blankets, and other emergency supplies. Checking road conditions before departure is also essential.