Northwest Coastal

Strong southwest flow should deliver significant snow and wind beginning Monday night. If more than 30 cm of new snow falls then danger ratings should all be bumped up one level, so Considerable becomes High.

Moderate - Timing, track, or intensity of incoming weather system is uncertain on Tuesday

A fairly juicy pattern is setting up that should deliver significant snow and wind to the Coast beginning Monday night carrying on through at least Friday. These systems are pretty convective which makes it difficult to pin down accurate snowfall amounts, but it looks like winter is coming, back, at least to the alpine over the next few days.MONDAY NIGHT: Freezing level rising to around 1000 m, moderate to strong southwest wind, trace to 10 cm of snow possible. TUESDAY: Overcast, freezing level around 1000 m, strong southwest wind, 10 to 25 cm of snow possible, with another 10 to 20 cm possible Tuesday night.WEDNESDAY: Overcast, freezing level around 1100 m, moderate to strong southwest wind, 2 to 6 cm of snow possible during the day with 5 to 15 cm possible Wednesday night.THURSDAY: Broken cloud cover, freezing level around 1200 m, moderate to strong southwest wind, 1 to 5 cm of snow possible.

Ne new avalanche activity to report from Saturday or Sunday.We received a great MIN report on Friday. It details a few avalanche occurrences including a size 3 on an east facing slope and lots of loose wet activity from steep terrain.

The region received 5 to 20 cm of snow Saturday into Saturday night. There is now about 20 cm of dry snow on high elevation north facing slopes and a 5 to 10 cm melt freeze crust on all other aspects. As we enter into mid-April we're dealing with a classic warm snowpack. At and below treeline the snowpack is becoming isothermal. We're tracking the April 4th crust which is down 20 to 80 cm below the surface on high elevation north facing slopes. Surface hoar and facets have been observed on this crust and it continues to produce sudden planar results in snowpack tests. We have not heard of any activity on this interface recently, but this week's cycle of storms have potential to activate it. Digging deeper, north facing alpine terrain also has a layer of facets down approximately 100 cm below the surface which are thought to be dormant at this time.