Time and Day: 0700 Tuesday
The Snapshot:
Mostly dry today with rain showers
tonight. Rain turns to light snow showers overnight with light snow and sun
breaks tomorrow. The remainder of the week will be partly cloudy and dry.
The Science
Current Observations:
It is warm this morning with a
temperature profile of 41 base and 37 ridges. High clouds are moving in
with the barometer at 1010mb’s and falling.
The easterly winds strengthened overnight with current gusts
10-15mph.
The Forecast: A slow moving cold front will track through
the PNW over the next 24hrs. Rain
showers out ahead of the front will enter the mountains tonight. Temperatures will fall with rain turning to
light snow showers overnight. A weak upper level ridge will produce partly
cloudy conditions with light passing snow showers tomorrow.
The Long Range: Weak disturbances rotating around an offshore
low pressure cell will bring a mixed bag of weather to Stevens Pass through the
weekend. No significant snow accumulation is expected for the next 5-7 days.
24hr values daily 4am to 4am.
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Precipitation:
Today 24hr
water: .25-.5 snow:
1-3
Tomorrow’s 24hr
water:.25 snow:1-2
Trend and Timing:
Light rain arrives after 4pm today
with rain turning to snow through the night.
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Temperature:
Low: 30 High:44
Freezing level: 8000’ – 4000’
Trend and Timing:
Freezing levels will slowly fall over
the next 24hrs. FL’s should fall to or
below 5000’ this evening and then drop below 4000’ sometime early tomorrow
morning.
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Winds
Base: 5-10 E
Ridge Top: 5-15 E shifting W
Trend and Timing:
East flow will shift westerly with the
passing of the front tonight.
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