Arctic High pressure was persistent over the Yukon Territory on the evening of 11/16 causing a cold northerly outflow at our lowest levels. The high rapidly weakened as a weak low and front developed in the Gulf. Overrunning aloft caused record heavy snow. Impacts were snow removal, otherwise no damage was reported.
...RECORD SNOW AMOUNTS FOR NOVEMBER 17 AND 18...
There were numerous daily COOP snowfall records across portions
of northern Southeast Alaska on November 17 and 18. Record
snowfall was recorded at the following locations:
Annex Creek recorded 11.7 inches on November 17, breaking the
previous record of 7.6 inches from 1959.
Juneau Lena Point near Juneau recorded 8.9 inches on November 17,
breaking the previous record of 5.8 inches from 2015.
Skagway recorded 5.5 inches on November 17, breaking the previous
record of 2.0 inches from 2009.
The Juneau Forecast Office recorded 10.8 inches on November 17,
breaking the previous record of 3.3 inches from 2003.
Downtown Juneau recorded 3.0 inches on November 17, breaking the
previous record of 2.5 inches from 1932.
The Snettisham Powerplant recorded 4.2 inches on November 17,
breaking the previous record of 1.5 inches from 2015.
Hyder recorded 15.0 inches on November 18, breaking the previous
record of 9.5 inches from 2006.
Hoonah recorded 7.0 inches on November 18, breaking the previous
record of 2.7 inches from 2015.
Pelican recorded 5.2 inches on November 18, breaking the previous
record of 4.5 inches from 2015.
Haines recorded 2.0 inches on November 18, breaking the previous
record of 0.5 inches from 2003.

Winter Storm in EASTERN CHICHAGOF ISLAND, ALASKA
From 16-NOV-17 21:00:00 to 17-NOV-17 21:00:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Storm total was 7.4 inches by 0800 on 11/18 at Hoonah.   Most of the snow fell on the afternoon of 11/17. No damage or power outages reported. Impact was snow removal.

Winter Storm in CAPE FAIRWEATHER TO CAPE SUCKLING COASTAL AREA, ALASKA
From 17-NOV-17 15:00:00 to 18-NOV-17 08:00:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

WSO Yakutat measured 14.0 inches new snow at 0800 on 11/18. Impact was snow removal with no damage or power outages reported.

Winter Storm in HAINES BOROUGH AND LYNN CANAL, ALASKA
From 17-NOV-17 00:00:00 to 17-NOV-17 16:00:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Haines Downtown measured 7.5 inches new snow, storm total at 0800 on 11/18. Mud Bay measured 10.3 inches new snow, storm total. Impact was snow removal. No damage or power outages.

Winter Storm in JUNEAU BOROUGH AND NORTHERN ADMIRALTY ISLAND, ALASKA
From 17-NOV-17 00:00:00 to 17-NOV-17 21:00:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

NWS Forecast Office measured a storm total of 11.0 inches at 0800 on 11/18. Most of the snow fell during the evening of 11/17. Other totals around town ranged from 6 to 13 inches. No damage or power outages were reported. Impact was snow removal.

Winter Storm in SALISBURY SOUND TO CAPE FAIRWEATHER COASTAL AREA, ALASKA
From 16-NOV-17 21:00:00 to 17-NOV-17 16:00:00 (AKST-9)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Pelican COOP measured 7.9 inches new snow ending 0800 on 11/18. Most of the snow fell on the afternoon of 11/17. No damage or power outages reported. Impact was snow removal.