Time and Day: 11:00 am
update
The Snapshot: Snow changing to rain
this afternoon. Moderate rain tonight changing
to snow after midnight tonight and then diminishing tomorrow morning.
The Science: A weak cold front passing north of Stevens Pass has temporarily dropped snow levels to
4000’. Freezing levels are expected to
climb back above 5000’ in a few hours
with the moisture letting up a bit. A
pocket of warm air being pushed ahead of
a cold front will bring another round of rain changing to snow tonight. The moisture tap gets shut off by noon or so
tomorrow due to some upper-level
ridging.
The Long Range: The rain snow game begins Wednesday again with gradually cooling as the
week comes to an end.
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Precipitation
Ending at 4am:
Today 24hr
water = +2” Snow = 2-4
Tomorrow’s
24hr water =.25 -.5 snow = 1-3
Trend and
Timing:
Snow changing
to rain continues through tonight. Rain turns to mixed snow and then
tapers to light showers tomorrow morning. Light passing rain showers
with partial clearing can also be expected tomorrow.
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24hr temperature
ending at 4 am tomorrow:
Low: 32
High: 40
Freezing
level: +6000’ – 4500’
Trend and
Timing:
Temperatures
will remain warm today. A small pocket of colder air will allow
freezing levels to drop temporarily to 4500’ or lower tomorrow
morning. Freezing levels will then rise again on Wednesday.
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24hr Winds (mph)
ending at 4 am tomorrow:
Base: 5-15 W
Ridge Top:
5-20 W gust +40 possible
Trend and
Timing:
The wind hasn’t been as
strong as models thought, but will remain gusty through the day as well.
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jM
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