STEVENS PASS MOUNTAIN WEATHER

3/13/2012 Weather

General Discussion: A passing upper level ridge has brought a break in the action today - hence the sun trying to make it through the clouds. The next front will hit the mountains tomorrow bringing more measurable snow.

Long-term: A well established NW flow pattern will keep storms funneling into the PNW for the remainder of week. Freezing levels are expected to reach Pass level sometime tomorrow night and stay hovering at +-4500’ through Thursday. Cooler temperatures are expected on Friday.

24 hour Forecast Starting at NOON on Tuesday

Cumulative Precipitation Totals:
“water by midnight= <.25
“of additional water by 4am= .10
“of additional water by 12pm= .25

24hr total “of water = .5

24hr Snow Total= 2-6

Trend and Timing:
Snow showers will hang around today with a short dry period tonight. The next round of snow is expected to reach the mountains after 7am tomorrow. Moderate to heavy snow with warming is expected throughout the day tomorrow.

Base Area Temperatures (F):
Low: 18 High: 24
Freezing level: 1000’ 3500’

Trend and Timing:
Freezing levels will remain low through the night. Temperatures will rise through the day tomorrow with freezing levels reaching 4500’ sometime late tomorrow afternoon or evening.

Winds Speed (mph)/Direction
5-15 W

Trend and Timing:
The winds are expected to mellow out today and then shift easterly tomorrow.

JM