A high impact, heavy snowfall event unfolded across large portions of Southcentral Alaska between 11/8 and 11/9, with the most intense and prolonged snowfall recorded across the mountain passes near Prince William Sound and out towards much of the Kenai Peninsula, Matanuska Valley and greater Anchorage area.
The setup for this event was very complex, unique and incredibly challenging from a forecast perspective.  A deep, negatively tilted upper trough stalled out between Southwest Alaska and the Alaska Gulf as a front and atmospheric river surged out ahead of this feature into the Gulf Coast, allowing very high moisture to stream north and west along it into Prince William Sound.  A small but very intense low spun up along this frontal zone, moving northwest into Prince William Sound late on 11/8 and continued north into the Susitna Valley as it dissipated by the afternoon of 11/9.  An axis of deep lift and moisture near the nose of the atmospheric river and to the east of the low as it tracked north and west remained focused between the Prince William Sound and Mat-Su Valleys for several hours, resulting in several feet of heavy, intense snowfall across the Chugach Mountains and between 12 and 36 inches of new snowfall from portions of the Kenai Peninsula out to Anchorage and across the Matanuska Valley.
Some numerical model guidance leading up to this event performed very poorly, projecting a much more west track for the low as it crossed the mountains towards Susitna Valley.  This scenario would have allowed much warmer air to flood into the Anchorage and Matanuska Valley, and would have also resulted in a transition over to rain during the highest intensity of precipitation.  This never materialized, and the bulk of precipitation during the event fell as snow for most locations.

Blizzard in KENAI PENINSULA, ALASKA
From 07-NOV-23 05:35:00 to 08-NOV-23 05:07:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Gusty north winds knocked down trees and caused power outages with winds gusting to 40 mph along with falling/blowing snow between 11 PM 11/7 through 3AM 11/8. Power outages would continue to affect residents of the area through 11/9/2023.

Blizzard in COPPER RIVER BASIN, ALASKA
From 07-NOV-23 09:59:00 to 09-NOV-23 08:59:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Richardson Highway was closed around 2 PM from Thompson Pass north due to 'hazardous' road conditions and very heavy snowfall with the  D.O.T reporting 72 inches of storm total snowfall.

Blizzard in NORTHEAST PRINCE WILLIAM SOUND, ALASKA
From 07-NOV-23 05:35:00 to 09-NOV-23 15:03:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Richardson Highway was closed around 2 PM from Thompson Pass north due to 'hazardous' road conditions and very heavy snowfall of up to 72 inches of new snowfall near the top of the pass.

Blizzard in WESTERN PRINCE WILLIAM SOUND, ALASKA
From 07-NOV-23 10:10:00 to 09-NOV-23 11:55:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Heavy snow closed Seward Highway between Moose Pass and Turnagain Pass which was featured in an article on KSRM Radio Broadcast (https://radiokenai.com/road-closures-along-the-seward-highway-in-moose-pass-and-turnagain-pass/).

Heavy Snow in KENAI PENINSULA, ALASKA
From 08-NOV-23 11:33:00 to 09-NOV-23 11:55:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

DOT reported up to 2 feet of new snowfall accumulation along the northern end of the Sterling Highway.

Heavy Snow in ANCHORAGE, ALASKA
From 08-NOV-23 14:00:00 to 09-NOV-23 11:55:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter initially reported 22 inches of snow along the Anchorage Hillside.  Overall storm total snowfall ranged from 16-20 inches in Anchorage to 25-30 inches on the Hillside.  Reports of fallen trees and power outages affecting over 4000 customers by the end of the snow event on November 9, 2023 (Chugach Electric).

Heavy Snow in EAST TURNAGAIN ARM, ALASKA
From 08-NOV-23 15:01:00 to 09-NOV-23 11:55:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

SN to +SN reported with 1/4 to 1/2 SM visibility at PATO for much of the duration of the event. Snow was heavy as long as precipitation type was snow, beginning the afternoon of Nov 8 until around midnight, and again for most of the morning of Nov 9. Webcam images showed near whiteout conditions during this same timeframe.

Winter Weather in MATANUSKA VALLEY, ALASKA
From 08-NOV-23 14:00:00 to 09-NOV-23 11:55:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported a storm total snowfall of 15.5 inches in Butte between the afternoon of 11/8 and the afternoon of 11/9.  The remainder of the Matanuska Valley saw around 10 to 15 inches of snow during the event.  Precipitation briefly turned over to rain during the early morning of 11/9, but the majority of heavier precipitation fell as snow.  Over 6000 customers were without power across the Matanuska Valley by the time snow ended on the afternoon of 11/9.