Monday, Nov.7, 2016 – Thursday, November 10, 2016

Issued: Mon, Nov 07, 2016 at 12PM

Expires: Thu, Nov 10, 2016

Above 2,500ft Moderate

1,800 to 2,500ft Low

Below 1,800ft Low

Degrees of Avalanche Danger ?

1. Low
2. Moderate
3. Considerable
4. High
5. Extreme

Avalanche Danger Rose ?

Avalanche Problems ?

Problem Details

Recent Avalanche Activity

November 7: 1 foot of heavy new snow at Thompson Pass

 

Recent Weather

A foot of snow fell Friday October 21 at Thompson Pass. Strong north wind scoured all windward slopes to ground, loaded gullies and created lee slope hard slabs. Minor accumulations over the weekend of October 29-30 with showers below 3000 feet elevation. One foot of heavy new snow November 7, snow continuing through the forecast period.

Additional Info & Media

SNOW HISTORY: Valdez 11/7 AM Thompson Pass 11/9  AM
Current Snow Depth 16″ 9″
24 Hour Snow / Water Equiv. trace” /0.2″ 2″ / 0.25″
Storm Snow / Water Equiv. (11/6) 2” / 0.4” 8″ / 0.4″
November Snow / Water Equiv. ?″ / ?″ 12″ / 1.3″
Total Winter Snowfall / Water Equiv. ?″ / ?” 35″ / 3.7″
Snowload in Valdez ?
SNOW DEPTH & WATER SURVEY (date) Depth Snow Water Equivalent
Milepost 2.5 Valdez  ?″  ?″
Milepost 18 ?″ ?″
Milepost 29 Worthington Flats ?″ ?″
Milepost 37 Tsaina River bridge ?″ ?″
 This survey is done the first week of each month.

Weather Quicklinks:

  • NWS forecast for Northeast Prince William Sound <here>
  • NOAA NWS spot forecast for Thompson Pass <here>
  • Valdez Glacier UAF weather station at 6600 feet <data here> <map here>.
  • Thompson Pass weather <here>.
  • Further weather resources <here>

SNOW CLIMATE ZONES:

  • Maritime (Coastal) – from the Port of Valdez to Thompson Pass, all waters flowing into Valdez Arm and everything south of Marshall Pass.
  • Inter-mountain (Transitional) – between Thompson Pass and Rendezvous Lodge.
  • Continental (Interior) – the dry north side of the Chugach (north of 46 Mile, including the Tonsina River).

Photo of Thompson Pass <here>

Run map of some of the forecast area <here>

NEWS: Our region is “one of the snowiest places on earth” – Serendipity / Rendezvous snowfall record set in 1963 <here>.

Free smart phone avalanche forecasts at: http://www.avalancheforecasts.com/

Posted in VAC Forecasts.
Pete Carter

Forecaster: Pete Carter