####018003446#### WWUS86 KSEW 111933 SABWA Summary Avalanche Forecast for Olympics and Washington Cascades Northwest Weather and Avalanche Center Seattle Washington 1233 PM PDT Sun Mar 11 2012 This forecast applies to back country avalanche terrain below 7000 feet and does not apply to developed ski areas or highways. Avalanche Forecast Washington Cascades near and west of the crest north of Stevens Pass AVALANCHE WARNING SUNDAY AND MONDAY Sunday: High danger above 4000 feet and considerable below. Danger increasing Sunday night. Monday: Increasing high danger above 4000 feet and considerable below. Conditions continuing Monday night. Olympics, Washington Cascades near and west of the crest Stevens Pass south AVALANCHE WARNING MONDAY Sunday: Considerable danger above 4000 feet and moderate below. Danger increasing Sunday night. Monday: Increasing high danger above 4000 feet and considerable below. Conditions continuing Monday night. Washington Cascades east of the crest Sunday: Considerable danger above 5000 feet and moderate below. Danger increasing Sunday night. Monday: Increasing high danger above 5000 feet and considerable below. Conditions continuing Monday night. Snowpack Synopsis A front crossed the Northwest Sunday early morning. This system caused nearly 3 feet of snow in the past 2 days in the Mt Baker area. This heavy rapid loading makes larger areas of deeper avalanche layers likely on lee slopes in that area Sunday morning. Less snow has only been received the past 24 hours in the remainder of the Cascades and Olympics. These snowfall amounts fall into the 4-6 inch range except for 12 inches at Paradise. This snow accumulated with a bit more cooling which should also help limit instability. So smaller areas of shallow avalanche layers should be found on some lee slopes in this area on Sunday morning. Sunday Winds and snow showers should generally decrease on Sunday. Sun effects may destabilize recent snow on steep slopes facing the sun. Back country travel in avalanche terrain is not recommended in the Mt Baker area. Careful snow pack evaluation will be required in other areas especially at Mt Rainier. The next storm should begin to cause increasing strong winds on Sunday night. Transport of recent snow to lee slopes should begin to increase the avalanche danger Sunday night. Monday A strong front should cross the Northwest on Monday causing strong winds, heavy snow and a temporary slight warming trend. This is likely to build new larger areas of deeper avalanche layers on lee slopes in most areas especially near and west of the crest. Back country travel in avalanche terrain is not recommended on Monday. These conditions should mostly continue on Monday night. n/a n/a NWAC weather data and forecasts are also available by calling 206-526-6677 for Washington, 503-808-2400 for the Mt Hood area, or by visiting our Web site at www.nwac.us. Ferber/Northwest Weather and Avalanche Center Seattle Washington References 1. http://www.nwac.us/####018002183#### WWUS86 KPQR 111933 SABOR Summary Avalanche Forecast for Mt Hood area Northwest Weather and Avalanche Center Seattle Washington 1233 PM PDT Sun Mar 11 2012 This forecast applies to back country avalanche terrain below 7000 feet and does not apply to developed ski areas or highways. Avalanche Forecast Mt Hood area AVALANCHE WARNING MONDAY Sunday: Considerable danger above 5000 feet and moderate below. Danger increasing Sunday night. Monday: Increasing high danger above 5000 feet and considerable below. Conditions continuing Monday night. Snowpack Synopsis After a dry period of several days about 4-5 inches of snow has been received the past 24 hours at Mt Hood. This snow accumulated with a bit of cooling which should also help limit instability. So smaller areas of shallow avalanche layers may be found on some lee slopes at Mt Hood on Sunday morning. Sunday Winds and snow showers should generally decrease on Sunday. Sun effects may destabilize recent snow on steep slopes facing the sun. Careful snow pack evaluation will be required at Mt Hood on Sunday. The next storm should begin to cause increasing strong winds on Sunday night. Transport of recent snow to lee slopes should begin to increase the avalanche danger Sunday night. Monday A strong front should cross the Northwest on Monday causing strong winds, heavy snow and a temporary slight warming trend. This is likely to build new larger areas of deeper avalanche layers on lee slopes. Back country travel in avalanche terrain at Mt Hood is not recommended on Monday. These conditions should mostly continue on Monday night. n/a n/a NWAC weather data and forecasts are also available by calling 206-526-6677 for Washington, 503-808-2400 for the Mt Hood area, or by visiting our Web site at www.nwac.us. Ferber/Northwest Weather and Avalanche Center Seattle Washington References 1. http://www.nwac.us/