Sufficient of the 1/2-inch snowfalls, extra severe snow will hit the lowlands (and the remainder of the state) on Tuesday.
Yesterday, some mild snow showers reached the lowlands as chilly air surged southward over the area.
Quantities ranged from nothing to about an inch at decrease elevations, whereas extra bountiful snow within the mountains introduced a requirement for chains at Snoqualmie.
Mild snow over Northeast Seattle.
Japanese Washington is now within the deep freezer, with temperatures within the single digits and even under zero, whereas critically below-freezing temperatures are widespread over the west (see low temps this morning, under).
Watch out driving: plenty of slippery roads on the market.
At the moment shall be comparatively benign and dry. However tomorrow is one thing else.
With chilly air in place over the area, a Pacific climate system will method. You may see the related clouds on the newest infrared satellite tv for pc picture (see under).
Tomorrow morning, a low-pressure middle will method, whereas air chilly sufficient to snow (blue and purple colours under) shall be discovered over a lot of the area, apart from the Willamette Valley and the WA coast. Snow will begin falling final Monday night and proceed into Tuesday morning.
This isn’t a great location of the low for lowland snow over Puget Sound–you need the low to take a extra southward monitor and attract chilly air from the north because it approaches.
Under is the newest snowfall whole forecast from the NOAA NWS HRRR mannequin by means of 10 AM Tuesday. Maybe a half-foot over some places of Northwest Washington (like Whatcom County) and the San Juans, with a number of inches from Seattle northward.
Much less over SW Washington, the place the temperatures are marginal however heaps within the mountains (good snowboarding for the vacation interval is assured)
These sorts of marginal temperature conditions are tough and thus taking a look at many mannequin options is helpful. There’s nonetheless (appreciable) uncertainty relating to the precise location of the rain-snow line and precipitation distribution.
The UW mannequin’s snowfall whole by means of Wednesday at 4 AM additionally has snow in NW Washington but in addition reveals a rainshadow (snow shadow) north of Seattle, and extra snow over the south Sound). However that is an older run than NWS HRRR forecast proven under.
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The European Heart Mannequin began extra lately (10 PM Sunday), and in addition retains many of the snow north of Seattle. And sure, giant totals within the mountains.
All fashions convey contemporary snow to the mountains of NE Washington.
Anyway, will control the newest options, since this forecast is tough with the southern fringe of the snowfall space unsure. It might be a lot simpler to forecast snow in Nebraska, however extra enjoyable right here!
