1-2 FEET OF BLOWER FOR THE CASCADES! POW ALERT- SIERRA, IDAHO, WYOMING, UTAH, ARIZONA, NEW MEXICO
Summary 2/24/18 PM report
There is a lot going on in the Chase room this afternoon, almost too much to provide details. I chased to Crystal this morning (only 4 inches on the snow report at 5AM) and was rewarded with 13 inches of blower by 9AM. Heavy snow will be falling in the Washington Cascades by Sunday morning (12-16 inches by 3PM) with the highest amounts at Stevens Pass (Convergence Zones). Oregon is going to be even deeper with 2 feet likely by Monday morning. Action drops south into the north Sierra (Sunday night) as well as Idaho, Wyoming and Utah. Deeper storms are likely mid or late week for many areas.
Short Term Forecast
Chase to the Cascades or Wasatch for Sunday. I feel safer on the Cascade bet with heavy blower falling from 3AM through 3PM Sunday (9-17 Stevens, 6-12, Crystal, 8-11 Baker). Oregon will see deeper amounts that continues into Monday morning (1-2 feet). Ride WA on Sunday and Oregon on Monday. Moderate snow might continue near Stevens Pass Sunday night (Wildcard based purely on a convergence zone that weakens late Sunday).
The Wasatch of Utah benefits tonight with a quick mover, cold air and orographics from the Great Salt Lake. Chase to the Wasatch for 1st chair Sunday with the Cottonwoods (LLC favored with NW flow) for 7-10 inches. NWS has up to 17 inches tonight at Alta (May be overdone). Models are only showing 5-8 inches however 7-10 for 1st chairs is likely in the Cottonwoods with 4-9 inches elsewhere. Thats a safe bet. Moisture quickly decreases on Sunday In the Wasatch. Colorado gets light or moderate leftovers favoring the I-70 corridor Sunday.
Idaho and Wyoming reap moderate snow especially Sunday late AM through Monday. Schweitzer may see 5-9 inches by last chair Sunday. Heavier snow will be falling late Sunday morning through Monday AM over Brundage, Tamarack, Central Panhandle, and Sun Valley. The Tetons will see moderate snow tonight (4-6) with light snow on Sunday (Decreasing early Sunday before increasing late Sunday). I would aim for 1st chair Sunday (Moderate) in the Tetons and even deeper Monday (5-10) Morning. Bottom Line: Most action between Idaho and Wyoming ramps up Sunday afternoon through Monday morning. Some areas will be reporting double digits by Monday morning.
The Sierra (Kudos to the locals waiting for deep snow at low elevations) will nab 8-15 inches at upper elevations by Monday morning. My confidence is high for the northern resorts with epic conditions for 1st chair Monday. Less snow will fall at Mammoth. More snow is in the extended forecast.
The storm over the Sierra continues to pump moisture into the Tetons Monday afternoon (Mentioned above), extending somewhat into northern Utah (Beaver may score). It splits a decent amount of moisture into central and southern Utah including Arizona Tuesday. Heavy snow may be falling at the Arizona Snowbowl Tuesday. That system races over the 4 corners including New Mexico on Wednesday. Significant snowfall is possible.
The Cascades get another deep storm by Wednesday night that pushes heavy snow into the Sierra Thursday. Things look DEEP mid to late week over central Idaho, Wyoming, Utah, and most of Colorado (Thursday/Friday). Chases will be abundant during the extended forecast.
Below: Total snowfall for the west through Thursday morning.
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