STEVENS PASS MOUNTAIN WEATHER

1/3/2012 Weather

General Discussion: A large low pressure system spinning in the Gulf of Alaska will pull warm air from the south today. Most of the moisture is tracking across the North Cascades, so Stevens Pass should remain dry through mid-day tomorrow. Rain is expected tomorrow afternoon/evening.

Long-term: A cold front will change the rain to snow sometime tomorrow evening or early Thursday morning. Light snow is expected to fall through most of the day on Thursday with Friday and the weekend look dry for now.

24 hour Forecast Starting at NOON on Tuesday

Cumulative Precipitation Totals:
“water by midnight= <.10
“water by 4am=0
24hr total “of water = <.10

24hr Snow Total = 0

Trend and Timing:
Most of the moisture is tracking across the North Cascades, so expect the next 24hr to be relatively dry. Rain will develop tomorrow afternoon and slowly change to snow through the night.

Base Area Temperatures (F):
Low: 34 High: 44
Freezing level: 4000’ 8000’

Trend and Timing:
Freezing levels will rise to near 8000’ by midnight tonight. Warm surface temperature will stick through most of the day tomorrow. Freezing levels are expected to drop back below pass level late tomorrow night.

Winds Speed (mph)/Direction
0-5 SE, 5-10 S ridge top

Trend and Timing:
Light southerly ridge top winds, which will be easterly at the surface, will persist through most of tomorrow.